Head-to-head test
Anker SOLIX E10 vs BLUETTI Apex 300 + B300K
The Apex 300 + B300K holds 4,700Wh usable for $2,599 and the SOLIX E10 holds 5,222Wh for $4,299, so the extra $1,700 isn't buying battery, it's buying electrical service you can only spend if you're wiring into a panel.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Anker
SOLIX E10
7,842Power Score · The AC & Fridge Zone
$4,299.00 · direct from Anker
Last checked 6 days ago. Prices move — check before you buy.
BLUETTI
Apex 300 + B300K
6,017Power Score · The AC & Fridge Zone
$2,599.00 · direct from BLUETTI
down from $2,799 · 7% below usual
Last checked 6 days ago. Prices move — check before you buy.
Spec deltas
The Apex 300 + B300K holds 4,700Wh of usable energy and costs $2,599. The SOLIX E10 holds 5,222Wh and costs $4,299. That's 522Wh more energy for $1,700 more money, or $3.26 for each additional usable watt-hour, against the $0.47 a watt-hour the Apex charges for its entire pack (2,599 divided by 5,529.6). Nobody buys the E10 for the battery.
They buy it for the inverter and the input. 7,680W continuous is twice the Apex's 3,840W, and 9,000W of solar input is 3.75 times the Apex's 2,400W. Those are not camping specs. Testers set this system up with a Power Dock and a combiner boxA11, and one ran central air off the install until it ran out, which took about four hours on a two-battery setupA8. The wall they hit was capacity, not the inverter.
So it comes down to one question, and it isn't which battery is better. It's whether the thing you're backing up has a cord or a breaker. With a cord, the Apex does the same work for $1,700 less. With a breaker, the Apex isn't in the running at all, and the E10's price stops being the interesting number.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
Which means the money isn't going into cells at all. It's going into twice the continuous output and 3.75 times the solar input ceiling, two specs that only pay out through an installation with an array behind it. Buy the E10 to plug appliances into and you have paid a seven-times premium on the only part of it you're touching.
Apex 300 + B300K: $2,599 for 5,529.6Wh, 4,700Wh usable after the 85% derateSOLIX E10: $4,299 for 6,144Wh, 5,222Wh usableSOLIX E10 output 7,680W continuous and 9,000W solar input; Apex 300 + B300K 3,840W and 2,400W
Why it mattersIf every load you own ends in a plug, the extra $1,700 buys you nothing you will ever use.
Ratio describes an inverter's relationship with itself. Ceiling describes its relationship with your house. On the E10 the binding constraint under a heavy cooling load turned out to be stored energy, not the inverterA8, which is what a large continuous rating buys you: the inverter stops being the thing you plan around.
Apex 300 + B300K: 7,680W surge over a 3,840W continuous inverter, a 2x ratioSOLIX E10: 10,000W surge over 7,680W continuous, about 1.3xA tester ran central air off an E10 install until the batteries drained, about four hours on a two-battery setupA8
Why it mattersIf central air, a well pump or a full service panel is on the list, only one of these two has the continuous rating to be in the conversation.
solar input
That draw is the tell for what this machine expects: a permanent array feeding it, which is exactly what a 9,000W input ceiling is sized for. Wired to a roof it's a line on a utility bill. Sitting in a garage as an emergency reserve it's a daily tax on the reserve itself. And there's no comparable measurement for the Apex bundle, so treat this as a question to ask about the E10 rather than a point scored for BLUETTIB3.
A tester measured about 40W of idle consumption on the E10A10SOLIX E10 usable capacity 5,222Wh (6,144 x 0.85)SOLIX E10 solar input ceiling 9,000W against the Apex 300 + B300K's 2,400W; no idle figure exists for the Apex bundle in our field dataB3
Why it mattersIf the plan is to keep one charged and idle between outages, get a standby figure in writing before you spend $4,299.
So the UPS row is a paper win. What actually differs is what sits downstream of the switch: the Apex protects whatever you plugged into it, while the E10's transfer has been reported to hold up brownouts and stop smart-home gear from rebooting across a whole houseA5. That's a difference in scope, not in speed.
Apex 300 + B300K switches to battery in 10ms; SOLIX E10 in 20msTwo independent reviewers, one through repeated storms in rural Ohio, found outages only by checking the app history, with no flicker and no smart-home devices rebootingA4A5
Why it mattersDon't pay for the 10ms. Decide how much of the house you want on the far side of the switch.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The Apex 300 + B300K costs $2,599 against $4,299 and still comes out cheaper per lifetime kilowatt-hour, $0.13 against $0.17, which settles most of this page.
cost / lifetime kWh
Thirteen cents a lifetime kilowatt-hour against seventeen. The Apex 300 + B300K wins the ownership math the same way it wins the sticker: $2,599 spread over 19,354 lifetime kWh (5,529.6Wh x 3,500 cycles) lands under $4,299 spread over 24,576 (6,144Wh x 4,000 cycles). The E10 stores more energy across its life and still charges more for each unit of it. Up front the same story repeats, $0.70 a watt-hour (4,299 over 6,144) against $0.47 (2,599 over 5,529.6).
Cycle life clears the paperwork on both. At one full cycle a day, 4,000 cycles is about 11 years and 3,500 is about 9.6, and the warranty is a flat tie at five years each. That leaves nothing for warranty length to decide, and it leaves the money question exactly where it started: a $1,700 gap, and whether you have any way to spend it.
PowerScore Breakdown
Selected because: 9,115 against 6,552 is the widest gap here, and it's worth knowing exactly which specs built it before paying $1,700 for them.
overall power score
9,115 against 6,552 is the widest gap on this page and the E10 earned every point of it. Twice the continuous output, 7,680W against 3,840W. Nearly four times the solar input ceiling, 9,000W against 2,400W. 500 more cycles, and about 614Wh more capacity (6,144 minus 5,529.6). Nothing here is a scoring artifact, and anyone arguing the score is wrong is arguing with the spec sheet.
What a score can't tell you is whether you're able to spend it. Service-panel output and roof-scale input are capability, and capability you can't reach is indistinguishable from capability you don't have. The score measures the machine. Your job is to measure the distance between the machine and your actual load.
What the Specs Don't Tell You
Selected because: Both weight figures are system totals rather than carry weights, and the two surge cards measure different things on purpose.
rated cycles
Read the weight card carefully, because neither number describes an object. The Apex 300 + B300K's 148.8 lbs is the sum of two boxes you buy stacked together, and the SOLIX E10's 190.6 lbs is a system figure for something that gets sited once. The 41.8 lb difference between them is a difference in installed mass, not in what anybody picks up, and testers describe the BLUETTI stack as handles-and-trolley territory rather than something you move on a whimB5B14.
The two surge cards look contradictory and aren't. The Apex keeps the wider margin over its own rating, 7,680W of surge on a 3,840W inverter, while the E10 keeps the higher ceiling at 10,000W over 7,680W. On noise, only one measured figure exists at all: 45dB for the Apex, with nothing published for the E10. That blank may be less alarming than it reads, since the one hands-on account we have describes the E10 as passively cooled with heat-dissipation fins and no cooling fansA9. One account isn't a measurementA9, but it's a reason to ask rather than assume.
Your Life, Your Pick
Selected because: Five of the six scenarios end in a tie; the sixth, at 4,685Wh a day, leaves the Apex 300 + B300K 15Wh of margin.
Five of the six scenarios end in a shrug, and the shrug is the finding. At 2,100Wh for a camping weekend or 1,645Wh for an eight-hour outage, both units are oversized enough that the percentage split (40 against 45, 31 against 35) is noise. When two batteries both walk away with roughly two-thirds of the pack untouched, the spec doing the deciding is price.
Van Life Daily is the exception and it's clean. A 4,685Wh daily draw leaves the Apex 15Wh against its 4,700Wh of usable capacity and leaves the E10 537Wh against 5,222Wh. Fifteen watt-hours is a rounding error, not a reserve. That's not a warning about being careful, it's a warning that a cloudy afternoon or one forgotten load puts the Apex short with nothing held back. If your draw genuinely sits near 4,685Wh a day, this is the E10's scenario, or the Apex with a second B300K bolted on, which is the growth path its own testers point atB13.
Growth Path
Selected because: Both units expand, so the real question is what feeds them: 9,000W of solar input against 2,400W.
solar input
Both expand, so expandability decides nothing and the input ceiling decides everything. The E10 accepts 9,000W of solar against the Apex's 2,400W, 3.75 times the array. One of these is built to be fed by a roof; the other is built to be fed by whatever you can set out in an afternoon, and both of those are legitimate plans as long as you know which one you're making.
The Apex's growth path is the ordinary one: buy another B300K when you need it, on a system you already understand, which is why testers point at this platform for van lifeB13. The E10's growth path assumes the rest of the project comes with it, a Power Dock and a combiner box includedA11. That's either precisely what you're doing or completely irrelevant to you. There is very little middle ground here.
Strengths & trade-offs
Anker SOLIX E10
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,700) than the Apex 300 + B300K.
- –Significantly heavier (+41.8 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI Apex 300 + B300K
Strengths
- +Costs $1,700 less
- +Lighter by 41.8 lb
Trade-offs
- –Weaker inverter (-3,840W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
Neither unit
Two nights asks 2,100Wh. The Apex 300 + B300K gives up 45% of its usable pack to cover it and the SOLIX E10 gives up 40%, a distinction with no consequence attached. The harder question is how a 148.8 lb two-box stack or a 190.6 lb system reaches the campsite at all. Both ride in the vehicle, get set down once and stay there, so neither weight figure turns into a unit you'll reposition on a whim. Let price decide this one.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Either unit
Eight hours of outage loads costs 1,645Wh, which is 31% of the SOLIX E10's usable capacity and 35% of the Apex 300 + B300K's. Both coast. What separates them in an outage isn't how long they last, it's what the power comes out of: 7,680W continuous is service-panel territory, while 3,840W is extension-cord territory done well. If the plan is to plug in the fridge and the router, both do it and one costs $1,700 less.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
A CPAP asks around 320Wh across a night, 7% of the Apex 300 + B300K's usable pack and 6% of the SOLIX E10's, so both spend the night barely stirring. Neither is a bedside object either way: 148.8 lbs and 190.6 lbs get placed once and left where they're placed. If CPAP backup is the whole reason you're shopping, you're paying for the 93% you won't touch, and the right answer is a unit sized for one night rather than for a house.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
A remote workday asks 910Wh, 17% of the SOLIX E10's usable capacity and 19% of the Apex 300 + B300K's. Neither unit notices. When both finish the day with more than 80% still in the pack, the decision moves entirely onto money: $2,599 against $4,299 for a job that uses about a fifth of either battery.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
Neither unit
Game day needs 670Wh, 13% of the SOLIX E10's usable capacity and 14% of the Apex 300 + B300K's, so both finish the afternoon essentially full. Weight is the usual tiebreak and it doesn't break anything here: 148.8 lbs is a two-box stack and 190.6 lbs is a system weight, and the 41.8 lb gap between them doesn't turn either into something that loads like a cooler. Decide on price and on what you'll do with these the other fifty-one weekends.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Apex 300 + B300K
4,685Wh a day is the one figure on this page that separates them. The Apex 300 + B300K has 4,700Wh usable (5,529.6 x 0.85), so it ends the day on 15Wh, which is a rounding error rather than a reserve, and the 100% shown here is close to literal. The SOLIX E10 ends at 90%, with 537Wh still in the pack (5,222 minus 4,685). That margin is the whole difference between a system that works and a system that works only when nothing unexpected happens. The catch sits on the recharge side: putting 4,685Wh back every day is the real job, and the E10's 9,000W solar ceiling is roof-scale input that no van roof will ever approach.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: SOLIX E10 runs 25.5h vs 22.9h.
$4,299 list · direct from Anker
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–348.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–69.6hHigh-Draw Appliances
These reveal the real limitsscale 0–5.2h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
August 9, 2026
Verdict: the BLUETTI Apex 300 + B300K
Take the Apex 300 + B300K unless your plan involves a service panel. It stores 4,700Wh usable against the E10's 5,222Wh, which is 90% of the energy, for $2,599 against $4,299, and it stays cheaper across its whole life at $0.13 a lifetime kilowatt-hour against $0.17. The E10's advantages are real and large: 7,680W continuous against 3,840W, 9,000W of solar input against 2,400W, 4,000 cycles against 3,500. Every one of them is capability you reach through an installation rather than through a cord, and testers setting it up describe a Power Dock, a combiner box, and a firmware update that can fail during setup with no way to recover inside the appA11. If you're backing up a house, buy the E10 and stop reading the price per watt-hour. If you're backing up a fridge, a freezer and a home office, the $1,700 has better places to be.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open Anker's and BLUETTI's current prices.
$2,599.00 · direct from BLUETTI
down from $2,799 · 7% below usual
Last checked 6 days ago. Prices move — check before you buy.
or check the SOLIX E10 price$4,299.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): Solar Generator.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, SOLIX E10 rates 5.0/5 (99th percentile of 16 Home Backup-class units), and Apex 300 + B300K rates 4.2/5 (53rd percentile of 16 Home Backup-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
What 190.6 lbs and 148.8 lbs Actually Cover
Neither number describes a thing with a handle on it. The Apex 300 + B300K's 148.8 lbs is the sum of two boxes you buy stacked together, and the SOLIX E10's 190.6 lbs is a system weight for equipment that gets sited once and stays sited. So the 41.8 lb difference between them (190.6 minus 148.8) is a difference in installed mass, not a difference in what anyone lifts. Plan both around the room they'll end up in, not the trip they'll take to get there.
45dB Is the Only Measured Figure on the Table
The Apex 300 + B300K publishes 45dB under load and the SOLIX E10 publishes nothing, which is not the same as being quieter. The more useful point is placement. A 148.8 lb two-box stack and a 190.6 lb system end up in a garage, a utility room or a basement, and at that distance the thing deciding whether you hear it is the wall, not the rating. Judge 45dB against where the unit will actually sit.
Surge Ceiling and Surge Ratio Are Measuring Different Things
The Apex 300 + B300K keeps the wider margin over its own rating: 7,680W of surge on a 3,840W continuous inverter, a 2x headroom. The SOLIX E10 keeps 10,000W over 7,680W, about 1.3x. Now look at where those land. The Apex's absolute peak, 7,680W, is exactly the E10's steady-state rating, so the moment the Apex is stretched hardest is the load the E10 carries all day without comment. Ratio is a statement about an inverter's relationship with itself. Ceiling is a statement about your loads. Only the second one is on your side of the wall.
UPS Switchover: ≤10ms vs ≤20ms
Both list a UPS mode, at different rated speeds. The Apex 300 + B300K is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The SOLIX E10 is rated ≤20ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Worth saying because the per-dollar framing can suggest otherwise: the Apex 300 + B300K works out at 1.8 years of cover per $1,000 spent against the SOLIX E10's 1.2, but that spread is the price gap, not the terms.
SOLIX E10: Noise Level Not Disclosed
The Apex 300 + B300K publishes its noise level (45dB); the SOLIX E10 doesn't publish one. That isn't evidence the SOLIX E10 is louder — it means there's no figure to hold it to, and no way to compare the two on this without hearing them. If you're buying for a bedroom, a CPAP, or an apartment, treat the Apex 300 + B300K's 45dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the SOLIX E10 before deciding.
Full record above — the Test Desk pick is the Apex 300 + B300K.
Check Apex 300 + B300K price →or check the SOLIX E10 priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
Both units have similar long-term ownership costs ($0.17/kWh vs $0.14/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Brand trust
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
Anker built its name on no-hassle replacements, and SOLIX is where that name is being tested. Support quality on this line is trending down from a high base, with AI-driven first-line responses and return logistics that get complicated fast once the item is heavy enough to ship as hazmat. On a system this size, the return path is the part of the warranty that actually bites.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
BLUETTI
Ecosystem
One of the broadest lineups — 15-20+ models from budget (AC2A) to flagship portable (Apex 300, 2764.8Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
BLUETTI runs the most inconsistent support in the category, email-first across a China timezone, so a bad ticket becomes a bad fortnight. Buying direct from BLUETTI rather than through a third party tends to produce better outcomes when something goes wrong, which on a $2,599 purchase is worth more than any coupon a marketplace listing offers.
Community
Active and growing — Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android — tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available — several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. Full LFP standardization across the lineup, though rated cycle life spans 2,500 (EB3A) to 6,000 (Elite units) — check the specific model. Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable — no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
Neither brand's support is a reason to buy. Anker's is sliding from a high starting point, BLUETTI's has been uneven for years, and both of these products are heavy enough that the real question isn't whether someone answers your email but who pays to move 148.8 or 190.6 pounds of lithium iron phosphate when a module fails. Buy direct from either, keep the packaging, and read the return policy before you need it.
Growth path
SOLIX E10
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 6,144Wh.
Accepts up to 9,000W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are Anker-specific. You're investing in the Anker ecosystem.
Apex 300 + B300K
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 5,530Wh.
Accepts up to 2,400W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the SOLIX E10's higher solar ceiling (9,000W vs 2,400W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
Anker SOLIX E10
Field data on the E10 is unusually good for a unit this new, because the launch pulled hands-on reviews from several outlets plus a live install threadA1A3A11. The consistent complaint is the app: workable but shallow, short of what a system at this price should ship with, and specifically confusing on time-of-use scheduling, where only the Super Off-Peak setting actually charges the batteries from the grid and the app never says soA1A2A3A12. The consistent praise is the switchover. Two reviewers, one of them through repeated storms in rural Ohio, describe outages they only discovered afterwards in the app history, with no flicker and no smart-home devices rebootingA4A5.
Three things to price in before you buy. A tester broke a plastic handle on a 130 lb battery module during normal use and called the riveted hardware under-built for the mass it carriesA7. The firmware update required to finish setup can fail on the E10 while the Power Dock's own update succeeds, with no recovery path in the app, so you unplug it from the combiner box, pair to it directly, finish the update and reconnectA11. And one reviewer measured roughly 40W of idle drawA10 while another describes the system as fanless and passively cooledA9. Both are single accountsA9A10. Both are worth confirming with Anker in writing rather than taking from a page like this one.
“The Solix app is cleanly laid out and has most of what I need, but it isn't as robust as some of the others out there — Tesla Powerwall and EcoFlow's Smart Home Panel offer richer data, graphs, and integrations.”
Sources
appleinsider.com · gizmodo.com · thesolarlab.com · diysolarforum.com
BLUETTI Apex 300 + B300K
The Apex 300 + B300K ledger is thin and reviewer-heavy: what exists comes from professional test units published inside the last year, with no long-term ownership reports and nothing on fan noise or idle drain specific to this bundleB3B12B14. What those testers did find is encouragingB4B12. One ran a full wash cycle in about an hour and watched the pack drop from 100% to 65%, then added a heat-pump dryer for another hour and a half to reach 20%B9B10. Another had the system recharged and ready again inside an hourB12, and a third calls it one of the few setups that could genuinely stand in for a generator without the noise, fumes or maintenanceB4. On bulk they agree: stacked, this is handles-and-trolley equipment, not something you move casuallyB5B14.
One conflict we can't resolve, stated plainly because it would otherwise look like an oversight. Several reviewers describe the base Apex 300 as having no USB or DC ports at all and point at a separate paid hub accessory to get themB1B2B6, while the spec sheet we hold for this bundle lists a 100W USB-C output. We can't reconcile those two accounts from hereB1B6, so no part of this verdict rests on ports. If port layout is load-bearing for you, confirm it against BLUETTI's own documentation before ordering.
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
Sources
thesolarlab.com · techspective.net · digitalreviews.net · thesolarpit.com · cleantechnica.com · trustedreviews.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Reviewers across multiple independent outlets and a live install thread consistently flag the Solix app as the E10's weakest link — serviceable for basic setups but short on the depth, clarity, and configurability of rivals like Tesla Powerwall. [SOLIX E10 · 4 entries]
- UPS switchover is repeatedly praised as imperceptible, holding up across multiple reviewers and real storm events in different climates. [SOLIX E10 · 2 entries]
- Build-quality and setup nitpicks — a broken plastic handle on a 130lb battery module and a firmware-update bug with no recovery path during install — surfaced despite otherwise smooth day-to-day operation. [SOLIX E10 · 2 entries]
- Reviewers consistently flag that the base Apex 300 has no USB/DC ports and requires a separate paid Hub D1 accessory, which some feel is overpriced for what it offers. [Apex 300 + B300K · 3 entries]
- Multiple sources note the extreme weight/bulk of the stacked Apex 300 + B300K system, making 'portable' a stretch despite handles/trolley options. [Apex 300 + B300K · 2 entries]
- Reviewers praise fast recharge and the system's ability to genuinely replace a generator for home backup and heavy loads like washers/dryers. [Apex 300 + B300K · 4 entries]
- A1
“The Solix app is cleanly laid out and has most of what I need, but it isn't as robust as some of the others out there — Tesla Powerwall and EcoFlow's Smart Home Panel offer richer data, graphs, and integrations.”
appleinsider.com — "Anker Solix E10 review: Whole home battery backups finally come within reach" · 2026-07 · [mixed]
- A2
“Anker's Solix app home screen looks a lot like the Tesla Powerwall app's, but the Time-of-Use scheduling section is confusing — only the Super Off-Peak setting actually charges the batteries from the grid; the other two off-peak options only use solar, and the app doesn't explain that upfront.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [mixed]
- A3
“The app experience isn't great — it's really basic and just not where it needs to be for a system this expensive that requires the app for control.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- A4
“I didn't see any evidence — no lights flickering, no fans slowing down, nothing — when the system moved to battery-only power and back to the grid; I only found out outages had happened by checking the app's history.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [positive]
- A5
“In rural Ohio with frequent outages, the system reliably kicked in during every storm — my brownouts are completely gone, the lights no longer flicker, and smart home devices stopped rebooting from brief power dips.”
appleinsider.com — "Anker Solix E10 review: Whole home battery backups finally come within reach" · 2026-07 · [positive]
- A6
“Anker's five-year warranty with a 60% capacity-retention guarantee is 'not encouraging' next to Tesla Powerwall's 10-year warranty promising 70% retention.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026 · [negative]
- A7
“We actually broke one of the battery handles during normal use — they're plastic with cheap riveted hardware, which feels under-built for a 130lb battery module.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- A8
“On a hot April day, central AC only lasted about four hours before draining the two-battery setup, exposing the limits of a smaller install under heavy cooling load.”
gizmodo.com — "Anker Solix E10 review: No Power? No Problem" · 2026-04 · [negative]
- A9
“This is a high-voltage system with passive cooling — it runs completely silent. Large heat-dissipation fins eliminate the need for cooling fans entirely.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [positive]
- A10
“Measured idle consumption came in around 40 watts, which is worth factoring into any battery-lifespan math on a system this size.”
thesolarlab.com — "Anker SOLIX E10 Review: Best Whole-Home Battery Backup?" · 2026 · [negative]
- A11
“There's a known bug where the firmware update required to complete setup can fail on the E10 while the Power Dock's update completes — the setup flow has no way to recover, so you have to unplug the E10 from the combiner box, pair to it directly, finish its firmware update, then reconnect it to the dock.”
diysolarforum.com — "Anker Solix E10 - Install" · 2026 · [negative]
- A12
“Anker needs more in-depth installation and configuration support documentation — the app works great for 'conventional' settings but lacks configurability for more specialized setups.”
diysolarforum.com — "Anker Solix E10 - Install" · 2026 · [mixed]
- B1
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
thesolarlab.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [mixed]
- B2
“That Bluetti D1 Power Hub that gives you your DC and USB ports costs about $300, which is a steep price for what you're getting.”
thesolarlab.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [negative]
- B3
“The bundle runs nearly $2,700, which puts it solidly in "serious investment" territory—and that is not including the Hub D1 or foldable trolley if you want the full package.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [mixed]
- B4
“It's one of the few systems I've tested that feels like it could genuinely replace a generator, without the noise, fumes, or maintenance.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [positive]
- B5
“Stacked, you're near 150 pounds of lithium iron phosphate and inverter muscle—movable with the built-in handles or a trolley... but not something you'll casually lug to a picnic.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [mixed]
- B6
“I just wonder why Bluetti did not include a USB-C port with some decent output, like 100 or 140W as I only got a measly 8W charge out of it for my phone.”
digitalreviews.net — Bluetti B300K Expansion Battery Review · 2025-12 · [negative]
- B9
“Results: 1 wash took about 1 hour and drained the Apex from 100% down to 65%.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [positive]
- B10
“Just for fun we then turned on our heat pump dryer to see that over 1½ hours it would further drain it down to 20%.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [mixed]
- B12
“During my testing, the recharge speed was astonishing. In under an hour, I had a system ready to go again.”
thesolarpit.com — Bluetti Apex 300 Review · 2025-10-28 · [positive]
- B13
“For van lifers, the Apex 300 is a great base station, and the ability to add another 2.7kWh of capacity by simply purchasing another B300K expansion pack is a game-changer.”
cleantechnica.com — The Bluetti Apex 300 & B300K Portable Power Station Tested · 2025-08-05 · [positive]
- B14
“As will you: it weighs in at 38kg, and is probably much too big and heavy for most people to carry alone.”
trustedreviews.com — Bluetti Apex 300 Review · 2025-10-10 · [negative]
Research compiled August 9, 2026.
Who Should Buy Which
Buy the SOLIX E10 if you…
- →You're backing up a house rather than a room. Central air, a well pump, the whole service: 7,680W continuous is the only rating on this page that supports it, and it's twice what the Apex offers.
- →You already have a real array, or you're budgeting one. The 9,000W input ceiling is the E10's best spec and it's inert below a few thousand watts of panels. Buy it with 2,400W of panels and you've bought the Apex's input ceiling at the E10's price.
- →You want the utility bill to move, not just the outage to survive. Grid charging on the Super Off-Peak schedule is a daily-use feature rather than an emergency one, though the app does a poor job explaining which settings actually do itA2.
- →You accept that this is a project. It goes in with a Power Dock and a combiner box, and at least one installer hit a firmware bug mid-setup with no in-app way out of itA11.
Buy the Apex 300 + B300K if you…
- →Your loads plug in. A fridge, a freezer, a router, a home office, tools on a jobsite: 4,700Wh of usable energy at $2,599 is the best value on this page and the E10 adds nothing you'd ever touch.
- →You'd rather grow one battery at a time than one project at a time. Another B300K is an incremental step on a system you already know, which is the reason testers keep pointing at this platform for van lifeB13.
- →You're siting it in a garage, a utility room or a basement. 45dB under load is the only measured noise figure between these two, and a number you can plan around beats a blank you can't.
- →You want the $1,700 back for panels. At a 2,400W input ceiling, the Apex's ceiling is one you can actually afford to reach.
If neither fits
If the honest load is a CPAP and a phone, close both tabs. 320Wh a night is 7% of the Apex's usable pack and 6% of the E10's, which means paying for the other 93% to sit in a corner: buy a single-box unit sized for one night and spend what's left on a second one. And if you're cross-shopping whole-home systems primarily on warranty, note that both of these are five-year products, and one reviewer already called Anker's five years with a 60% capacity-retention guarantee thin next to the ten-year, 70%-retention systems in that categoryA6. That's a fair reason to look past both of them.
The Bottom Line
The Apex 300 + B300K is the buy for anyone whose power comes out of an outlet. 4,700Wh usable against 5,222Wh is 90% of the energy, $2,599 against $4,299 is 60% of the money, and $0.13 a lifetime kilowatt-hour against $0.17 means it stays the cheaper unit for as long as you own it. The E10 is the better machine on every spec a score can count, and not one of those specs reaches you through a cord.
Wire into a panel and that reverses cleanly, at which point the price stops mattering: 7,680W continuous is the only rating here that runs a house, and no amount of value per watt-hour turns 3,840W into 7,680W. Everybody else should take the Apex and put the $1,700 into panels or a second battery.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX E10 worth $1,700 more than the BLUETTI Apex 300 + B300K?
Only if you're buying the inverter rather than the battery. The gap buys 522Wh of extra usable capacity, 5,222Wh against 4,700Wh, which works out to $3.26 per additional watt-hour when the Apex charges $0.47 a watt-hour for its whole pack (2,599 over 5,529.6). What the money actually buys is 7,680W of continuous output against 3,840W and a 9,000W solar input ceiling against 2,400W. Wiring into a service panel, that's the entire point. Plugging things in, it's dead weight.
Can the BLUETTI Apex 300 + B300K back up a whole house?
At 3,840W continuous it backs up circuits, not a service. That covers a fridge, a freezer, a furnace fan, lights and electronics running together, and one tester ran a complete washing machine cycle off it in about an hour. Central air or a well pump is where 3,840W runs out of room, and it's exactly the job the E10's 7,680W exists for.
Which one lasts longer, the SOLIX E10 or the Apex 300 + B300K?
The E10, on both measures. It's rated for 4,000 cycles against 3,500, and its larger pack turns those into 24,576 lifetime kWh (6,144Wh x 4,000) against 19,354 (5,529.6Wh x 3,500). At one full cycle a day that's roughly 11 years against 9.6. Both carry five-year warranties, so on paper the coverage expires long before either battery does.
Are either of these actually portable?
No, and the weight figures are easy to misread. The Apex 300 + B300K's 148.8 lbs is the sum of two boxes bought stacked together, and the SOLIX E10's 190.6 lbs is a system weight for something that gets installed with a Power Dock and a combiner box rather than set down somewhere. Testers describe the BLUETTI stack as handles-and-trolley equipment. Plan both around where they'll live, not how they'll travel.
How fast does each one recharge from solar?
The ceilings are 9,000W for the E10 and 2,400W for the Apex, and they describe two different projects. At full input the Apex would refill its 5,529.6Wh pack in about two and a half hours on paper (5,529.6 over 2,400), and one tester had it recharged and ready again in under an hour on AC. The E10's 9,000W is roof-scale, the input spec of a system expected to live under a permanent array, and portable panels won't come near it.
Where to buy
Anker SOLIX E10
$4,299.00
$4,299.00 · direct from Anker
Last checked 6 days ago. Prices move — check before you buy.
BLUETTI Apex 300 + B300KPick
$2,599.00
$2,599.00 · direct from BLUETTI
down from $2,799 · 7% below usual
Last checked 6 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.