Head-to-head test
EcoFlow DELTA 3 Ultra Plus vs Goal Zero Sherpa 100PD
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Full profiles: EcoFlow DELTA 3 Ultra Plus → · Goal Zero Sherpa 100PD →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
$1,599.00 · direct from EcoFlow
Last checked 8 hours ago. Prices move — check before you buy.
$199.95 · direct from Goal Zero
Last checked 8 hours ago. Prices move — check before you buy.
Spec deltas
The EcoFlow DELTA 3 Ultra Plus (3,072Wh) and Goal Zero Sherpa 100PD (95Wh) sit in different weight classes. The real question: do your power needs justify the larger unit, or would you be overpaying for capacity that sits unused? These two aren't alternatives to each other. The DELTA 3 Ultra Plus holds 32× the energy and costs 8× as much, so this comes down to the load you need to cover rather than which unit is better. If the Sherpa 100PD carries your load, the DELTA 3 Ultra Plus is capacity you pay for and never use; if it doesn't, no amount of saving makes the Sherpa 100PD the answer.
What the spec gap means in practice: the DELTA 3 Ultra Plus's 3,600W inverter has the headroom for a window AC, a full-size fridge, and power tools. The Sherpa 100PD's 100W inverter can't run the heaviest of those — a window AC or a high-surge power tool needs more than it can hold, and it publishes no surge headroom above that rating. On stamina, the DELTA 3 Ultra Plus keeps a fridge alive for roughly 17 hours vs the Sherpa 100PD's 1 hours. The cost? Portability. At 74.3 lbs, the DELTA 3 Ultra Plus is heavy enough to make you think twice about moving it. The Sherpa 100PD at 1.5 lbs is something one person can actually carry.
Pick the DELTA 3 Ultra Plus if your primary use is weekend camping or 8-hour blackout. Go with the Sherpa 100PD if its specific strengths below line up better with your use. Most buyers stop at the sticker price and miss this: over a full lifespan the DELTA 3 Ultra Plus works out to about $0.13/kWh against the Sherpa 100PD's $4.22, a gap that compounds in the DELTA 3 Ultra Plus's favor the more you cycle it. Keep scrolling for the full breakdown. The scenario verdicts below hold a few surprises.
Bench Notes
What each unit does well, where it falls short, and the trade-offs that matter.
EcoFlow DELTA 3 Ultra Plus
With a massive 3,600W output (and 7,200W surge), the DELTA 3 Ultra Plus can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 74.3 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion. A standout feature is the value proposition: at roughly $0.52 per watt-hour, it's one of the most cost-effective options on the market.
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 4,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$1,399.1) than the Sherpa 100PD.
- –Significantly heavier (+72.8 lbs), making it harder to move.
Goal Zero Sherpa 100PD
At 100W, this unit is strictly for personal electronics (phones, laptops) and small CPAP machines. Do not expect to run kitchen appliances. At only 1.5 lbs, it is exceptionally portable. You can easily carry it one-handed to a campsite or tailgating party.
Strengths
- +Costs $1,399.1 less
- +Lighter by 72.8 lb
Trade-offs
- –Weaker inverter (-3,500W) limits appliance compatibility.
- –Lacks smartphone app control for remote monitoring.
- –Sealed capacity — the DELTA 3 Ultra Plus can add batteries to grow past 94.7Wh; this one can't.
- –Shorter-lived battery — rated for 500 charge cycles vs the DELTA 3 Ultra Plus's 4,000, so it wears out sooner.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on seven 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
DELTA 3 Ultra Plus
The Sherpa 100PD has no AC outlets, so the led lights and box fan in this scenario never plug in — it's a DC station for USB and 12V gear, and no wattage figure changes that. The DELTA 3 Ultra Plus handles this scenario with 511Wh to spare.
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
DELTA 3 Ultra Plus
The Sherpa 100PD has no AC outlets, so the fridge, router + modem and the rest in this scenario never plug in — it's a DC station for USB and 12V gear, and no wattage figure changes that. The DELTA 3 Ultra Plus handles this scenario with 966Wh to spare.
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
DELTA 3 Ultra Plus
The Sherpa 100PD doesn't finish — 80Wh usable against the 320Wh this needs leaves it 240Wh short, about 25% of the scenario covered. The DELTA 3 Ultra Plus covers it with 2,291Wh to spare.
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
DELTA 3 Ultra Plus
The Sherpa 100PD has no AC outlets, so the external monitor and router + modem in this scenario never plug in — it's a DC station for USB and 12V gear, and no wattage figure changes that. The DELTA 3 Ultra Plus handles this scenario with 1,701Wh to spare.
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
DELTA 3 Ultra Plus
The Sherpa 100PD has no AC outlets, so the blender and led tv in this scenario never plug in — it's a DC station for USB and 12V gear, and no wattage figure changes that. The DELTA 3 Ultra Plus handles this scenario with 1,941Wh to spare.
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
Neither unit
The Sherpa 100PD has no AC outlets, so the mini-fridge, led lights and the rest in this scenario never plug in — it's a DC station for USB and 12V gear, and no wattage figure changes that, so capacity never gets a say. This is the wrong kind of unit for the job rather than a close call. The DELTA 3 Ultra Plus doesn't have the energy either — 2,611Wh usable against 4,685Wh, 2,074Wh short — so neither route works.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
DELTA 3 Ultra Plus
The Sherpa 100PD doesn't finish — 80Wh usable against the 100Wh this needs leaves it 20Wh short, about 81% of the scenario covered. The DELTA 3 Ultra Plus covers it with 2,511Wh to spare.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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
Only the DELTA 3 Ultra Plus can run this load — the Sherpa 100PD has no AC outlets for the wall-plug gear in it.
$1,599 list · direct from EcoFlow
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 0–174.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–34.8hHigh-Draw Appliances
These reveal the real limitsscale 0–2.6h¹ 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
July 10, 2026
Verdict: the DELTA 3 Ultra Plus, on Power Score margin
These two units are closely matched on individual specs, but our Power Score analysis gives the DELTA 3 Ultra Plus the edge with a composite score of 4,817 vs 791. One class note: the Sherpa 100PD is DC-only — its output figure is a USB/12V port total, not an inverter rating, and nothing with a wall plug runs on it.
Overall score margin: 4,817 vs 791 — note the Sherpa 100PD is DC-only, so its output enters the score as a USB/12V port total, not an inverter rating (+509.0%)
List prices as of July 10, 2026. The links below open EcoFlow's and Goal Zero's current prices.
$1,599.00 · direct from EcoFlow
Last checked 8 hours ago. Prices move — check before you buy.
or check the Sherpa 100PD price$199.95 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 10, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, RV Living, Home Backup, Solar Generator, Tailgating, Food Truck.
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.
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, DELTA 3 Ultra Plus rates 4.9/5 (92nd percentile of 26 Large-class units), and Sherpa 100PD rates 3.4/5 (5th percentile of 22 Personal-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.
DELTA 3 Ultra Plus: 74.3 lbs Is a Commitment
At 74.3 lbs, this is manageable but not fun to move. That's heavier than a large checked suitcase. How much it costs you depends on whether it rolls — wheels and a telescoping handle change the job completely at this weight, and our spec record doesn't track them, so look at the product photos before you plan on carrying it from the car.
Sherpa 100PD: No AC Outlets At All
The Sherpa 100PD's 100W is a DC port total — USB and 12V — not an inverter rating. Anything with a wall plug (a fridge, a TV, a coffee maker, most fans and lamps) never plugs in, at any wattage. That's the design, not a defect: it buys weight, silence, and efficiency for phone, laptop, camera, and 12V-CPAP loads. The DELTA 3 Ultra Plus carries a real inverter behind 6 AC outlets, so it plays in both worlds. Decide which side of that line your gear lives on before weighing anything else on this page.
Sherpa 100PD: No App Control
Without app control, you have to physically walk to the Sherpa 100PD to check battery level, adjust settings, or monitor power draw. The DELTA 3 Ultra Plus lets you do all that from your phone, including getting low-battery alerts.
Sherpa 100PD: Fixed Capacity
The Sherpa 100PD is sealed at 95Wh — fine if that covers you, but it's the ceiling. By contrast the DELTA 3 Ultra Plus can add expansion batteries, though the first thing it has over the Sherpa 100PD is its own 3,072Wh base — expansion is the step after that, for the buyer who would outgrow 3,072Wh as well.
Only the DELTA 3 Ultra Plus Lists a UPS Mode
The DELTA 3 Ultra Plus can sit between the wall and your gear and hand it to battery when the grid drops — rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. Worth it for a router, a desktop PC, or a CPAP. The Sherpa 100PD's spec sheet lists no UPS mode, so anything plugged into it rides an outage only as far as your reaction time.
Warranty: 5 Years vs 2
The DELTA 3 Ultra Plus is covered for 5 years against the Sherpa 100PD's 2 years. The cheaper Sherpa 100PD does buy more warranty per dollar (10 years per $1,000 against 3.1), but that is a statement about price, not about coverage — if a fault appears in year 3, only one of these is still covered. An underrated factor if you're keeping this unit for years.
Battery Lifespan in Real Years
The DELTA 3 Ultra Plus is rated for 4,000 cycles vs 500. In real life: at daily use, that's 11 vs 1.4 years. At weekend use (twice a week), it's 38 vs 5 years. One caution reading years across different sizes: a cycle is 3,072Wh on the DELTA 3 Ultra Plus and 95Wh on the Sherpa 100PD, so count lifetime energy — roughly 12,288 kWh against 47 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Sherpa 100PD: Noise Level Not Disclosed
The DELTA 3 Ultra Plus publishes its noise level (30dB); the Sherpa 100PD doesn't publish one. That isn't evidence the Sherpa 100PD 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 DELTA 3 Ultra Plus's 30dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the Sherpa 100PD before deciding.
Full record above — the Test Desk pick is the DELTA 3 Ultra Plus.
Check DELTA 3 Ultra Plus price →or check the Sherpa 100PD 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
The Sherpa 100PD is cheaper to buy, but the DELTA 3 Ultra Plus is cheaper to own. At $0.13/kWh over its lifetime vs $4.22/kWh, the DELTA 3 Ultra Plus's higher cycle life and capacity make each dollar go further over the years.
Delivers each lifetime kWh for $4.09 less — check the DELTA 3 Ultra Plus price →
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. At the very top of the range, the DELTA Pro Ultra platform stacks batteries and inverters into whole-home backup — a flagship path, not a line-wide feature.
Worth knowing
Tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
Goal Zero
Ecosystem
Focused — a compact current line (6th-gen Yeti and Yeti Pro series), the previous-gen X series now out of stock across every model on Goal Zero's own store (checked 2026-09-13: 200X, 500X, 1000X, 1500X, 3000X, 6000X, some listed only as open-box), so buying one new means finding retailer stock, Sherpa power banks for the under-100Wh tier, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IP ratings vary by model). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Typically the priciest brand per watt-hour — though individual pairings vary, and on some pages the Yeti is the cheaper energy. Support quality has declined from its "premium" standard. Perceived as competitively stagnant vs. faster-innovating Chinese competitors. Reliability reports on newer models are concerning.
Analyst note
EcoFlow and Goal Zero are close competitors. Both have established support channels and growing ecosystems. Compare their specific warranty terms and community size for your peace of mind.
Growth path
DELTA 3 Ultra Plus
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,072Wh.
Accepts up to 1,600W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Sherpa 100PD
FIXED CAPACITYFixed at 95Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 20W of solar. Limited to a single portable panel.
Limited ports. You'll likely need a power strip or splitter.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The Sherpa 100PD is sealed at 95Wh, which is fine if that covers you. The DELTA 3 Ultra Plus starts at 3,072Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the Sherpa 100PD doesn't have if your needs climb toward partial-home backup.
The Bottom Line
The full picture comes down to this. The DELTA 3 Ultra Plus edges ahead on our overall analysis, but the margin is narrow enough that your specific use case should drive the decision. Review the scenario verdicts above — if the Sherpa 100PD wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the DELTA 3 Ultra Plus nor the Sherpa 100PD feels like the right fit, your power needs probably sit outside what these two target. Use our comparison tool above to explore alternatives that better match your specific wattage and runtime requirements. Prices on portable power stations fluctuate frequently. Both EcoFlow and Goal Zero discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the DELTA 3 Ultra Plus worth $1,399.1 more than the Sherpa 100PD?
The short answer: yes, if you'll actually use the extra capability. The DELTA 3 Ultra Plus costs $1,399.1 more, but that premium buys you 2,977.3Wh more battery capacity (that's 17 extra hours of running a mini-fridge); 3,500W higher AC output (opening the door to more demanding appliances); a longer-lasting battery rated for 4,000 cycles — that's 11 years at daily use; 1,580W faster solar charging for quicker off-grid recovery. On a cost-per-watt-hour basis, you're paying $0.52/Wh vs $2.11/Wh. Factor in cycle life and the math flips: the DELTA 3 Ultra Plus costs $0.13/kWh over its lifetime vs $4.22/kWh. The "expensive" unit is actually cheaper to own. For regular use, we'd pay the premium.
How does the 2,977.3Wh capacity difference actually affect daily use?
The DELTA 3 Ultra Plus's 3,072Wh battery keeps a mini-fridge running for roughly 17 hours vs the Sherpa 100PD's 1 hours. Where it really matters: during an 8-hour blackout running your fridge, router, lights, AND charging your phone simultaneously (about 1,645Wh total), the DELTA 3 Ultra Plus handles it while the Sherpa 100PD runs dry. What specs don't mention: runtime drops 20-30% in cold weather (below 32°F/0°C) as battery chemistry slows down. The DELTA 3 Ultra Plus's extra capacity provides a critical cold-weather buffer. For occasional phone and laptop charging, both are overkill. This gap only matters for sustained, multi-appliance use.
Can I actually carry the DELTA 3 Ultra Plus, or is the Sherpa 100PD the only portable option?
The Sherpa 100PD at 1.5 lbs is genuinely grab-and-go. Toss it in a backpack, carry it one-handed to a picnic, take it on a boat. The DELTA 3 Ultra Plus at 74.3 lbs is a different story. It's like carrying a large suitcase full of books. If you're setting up and breaking down camp frequently, this weight difference will exhaust you by day two.
How fast can each unit recharge from solar panels in real conditions?
On paper, the DELTA 3 Ultra Plus accepts 1,600W vs the Sherpa 100PD's 20W of solar input. What the spec sheet won't tell you: solar panels typically deliver only 60-80% of their rated output due to panel angle, cloud cover, and temperature. In realistic conditions, expect full recharge in about 2.7 hours for the DELTA 3 Ultra Plus and 6.8 hours for the Sherpa 100PD. That gap widens on cloudy days, when the DELTA 3 Ultra Plus's higher input ceiling captures more of whatever sunlight is available. One more thing: summer gives you ~7 productive solar hours per day. Winter drops to ~4. If solar is your primary recharge method, the DELTA 3 Ultra Plus's advantage is substantial.
"4,000 vs 500 cycles" — what does that actually mean for me?
In real years: the DELTA 3 Ultra Plus (4,000 cycles) lasts 11.0 years at daily use, 38 years at weekend use (twice a week), or 167 years at twice-monthly camping trips. The Sherpa 100PD (500 cycles): 1.4 years daily, 5 years weekends, or 21 years twice-monthly. What most people miss: hitting the cycle limit doesn't kill your battery. Capacity drops to about 80%. Your 3,072Wh unit becomes a ~2,458Wh unit. Still very usable. For weekend users, both batteries will outlast the warranty by years.
Can I use the DELTA 3 Ultra Plus as a home UPS to protect my electronics during blackouts?
Yes. The DELTA 3 Ultra Plus has UPS mode with true 0ms switchover (double-conversion). Even hospital-grade equipment won't notice. Plug in your desktop PC, router, NAS, or CPAP machine and it switches to battery seamlessly when the grid drops. The Sherpa 100PD does not have this feature. Without UPS, a blackout means: your PC reboots (potentially corrupting unsaved work), your NAS may corrupt its drive array, your CPAP alarms and wakes you up, and your security cameras go dark until you manually switch them over. If always-on power protection matters, this is a dealbreaker advantage for the DELTA 3 Ultra Plus.
What if I need more capacity than the Sherpa 100PD's 94.7Wh later?
The Sherpa 100PD is sealed at 94.7Wh, so if you expect your needs to climb, the DELTA 3 Ultra Plus is the more future-proof pick: it starts at 3,072Wh and adds EcoFlow-compatible batteries without replacing the base unit. That said, "not expandable" isn't a flaw on its own — if 94.7Wh comfortably covers your loads, the Sherpa 100PD is a complete unit, not a downgrade.
Is EcoFlow or Goal Zero more reliable for long-term ownership?
Both brands have strengths and trade-offs. EcoFlow: Mixed. 2-5 years depending on model (DELTA Pro Ultra line gets 10 years). Some users report smooth claims; others report runarounds. Register your product to extend coverage. Goal Zero: 5 years on LFP models, 2 years on older NMC models. Battery must be charged within 7 days of purchase and every 6 months to maintain warranty (strict). Product reliability concerns have increased — repeat "Battery Fault" errors reported even on newer Yeti Pro 4000. One piece of advice from the power station community: regardless of brand, buy from Costco or Amazon. Their return policies provide a safety net that manufacturer warranties alone can't match, especially for a product you'll rely on in emergencies. Both brands use LFP (lithium iron phosphate) batteries in their current lineup, the most proven chemistry for longevity and safety.
Bottom line: should I buy the DELTA 3 Ultra Plus or the Sherpa 100PD?
We'd pay the premium for the DELTA 3 Ultra Plus. Yes, it costs more. The capability jump is real: you're stepping into a tier that handles appliances the base model can't start. The Sherpa 100PD is still solid if budget is the priority, but the DELTA 3 Ultra Plus will leave you less likely to wish you'd "gone bigger" six months from now. That regret costs more than the price difference.
Where to buy
EcoFlow DELTA 3 Ultra PlusPick
$1,599.00
$1,599.00 · direct from EcoFlow
Last checked 8 hours ago. Prices move — check before you buy.
Goal Zero Sherpa 100PD
$199.95
$199.95 · direct from Goal Zero
Last checked 8 hours ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.