Head-to-head test
EcoFlow RIVER 2 Pro vs EcoFlow RIVER 3 MAX PLUS WIRELESS
$100 more buys 428Wh more capacity, an actual expansion path, and a fan quiet enough to sleep next to — the RIVER 2 Pro's only structural reply is 200W more continuous output and a smaller upfront number.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
EcoFlow
RIVER 2 Pro
2,481Power Score · Appliance Class
$349.00 list · direct from EcoFlow
EcoFlow
RIVER 3 MAX PLUS WIRELESS
2,887Power Score · Appliance Class
$599.00 list · direct from EcoFlow
Spec deltas
The RIVER 3 MAX PLUS WIRELESS costs $599 against the RIVER 2 Pro's $499 — a $100 gap — and for that money it adds 428Wh of capacity (1,196Wh against 768Wh), an actual expansion path, and a noise floor of 30dB against the RIVER 2 Pro's 62dB.
The RIVER 2 Pro's reply is narrower than its price tag suggests: 800W of continuous output against the RIVER 3's 600W, and a 1,600W surge ceiling against 1,200W. It's the more powerful unit in short bursts and sustained mid-load draw, not the bigger one.
Run the lifetime math and the newer unit is also the cheaper one to own: $0.17 per lifetime kWh against $0.22, mostly a function of the extra capacity spreading the same warranty term across more stored energy. This is as close to a straightforward generational upgrade as this page gets — with one real asterisk on output.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
The RIVER 3's quiet isn't a minor spec bump; it's the difference between a unit you can run in the same room you're sleeping or working in and one that sends you looking for a fan replacement two years in.
The RIVER 3 MAX PLUS WIRELESS is rated at 30dB under load; the RIVER 2 Pro is rated at 62dBOne owner physically modded the RIVER 2 Pro's fan to reduce noise, describing the stock unit as loud enough to justify cutting into the internal plasticA1
Why it mattersAnyone running this near a desk, a bedroom, or a CPAP setup should weight the noise gap over almost everything else on this page — it's a spec you live with on every single charge, not once.
Buying the RIVER 2 Pro today and outgrowing 768Wh in two years means buying an entirely new unit, full price, from scratch. Buying the RIVER 3 and outgrowing 1,196Wh means adding a battery module to what you already own.
The RIVER 2 Pro has no expansion path — buying it means the 768Wh you get is the 768Wh you'll ever haveThe RIVER 3 MAX PLUS WIRELESS supports EcoFlow expansion batteries, adding capacity without replacing the base unit
Why it mattersAnyone whose power needs might grow — more camping gear, longer trips, a future partial-home-backup project — should treat the RIVER 3's expansion path as real dollar value against a future purchase, not a nice-to-have.
continuous output
For anything drawing between 600W and 800W continuously — a space heater, a larger cooler, a compressor appliance near the RIVER 3's limit — the older RIVER 2 Pro is the unit that keeps running while the newer one throttles or shuts off.
The RIVER 2 Pro outputs 800W continuous against the RIVER 3's 600WThe RIVER 2 Pro's surge ceiling is 1,600W against the RIVER 3's 1,200W
Why it mattersBuyers with a specific appliance in that 600-800W band should check it against the RIVER 3's lower ceiling before assuming the newer, quieter, bigger-capacity unit is automatically the upgrade — for this one column, it isn't.
The specific dimensions that decide these two units — everything else is a tie.
PowerScore Breakdown
Selected because: RIVER 3 scores higher (2,887 vs 2,183) despite lower continuous output, driven by capacity, noise, and switchover.
overall power score
The engine puts the RIVER 3 at 2,887 against the RIVER 2 Pro's 2,183, a gap wide enough that the older unit's 200W output edge doesn't come close to closing it. Capacity, noise, and switchover speed all tilt hard toward the newer unit.
This is what a real generational jump looks like on the composite score — not a wash with tradeoffs on both sides, but one unit ahead on most columns and behind on exactly one.
Lifetime Value
Selected because: The extra capacity makes the RIVER 3 cheaper per lifetime kWh despite the higher upfront price.
cost / lifetime kWh
$0.17 per lifetime kWh on the RIVER 3 against $0.22 on the RIVER 2 Pro — the extra $100 upfront buys 428Wh of additional capacity, and spread across the same 3,000-cycle rating, that capacity brings the effective cost down rather than up.
Cost per warranty year runs slightly higher on the RIVER 3 ($120 vs $100), which is the honest flip side: you're paying more per year for more stored energy, not paying less for the same amount.
Your Life, Your Pick
Selected because: The RIVER 3 wins CPAP, Remote Workday, and Tailgate outright — worth explaining why.
The RIVER 3 wins CPAP Overnight, Remote Workday, and Tailgate Party outright — each of those draws sits closer to the RIVER 3's larger capacity than the RIVER 2 Pro's, and the RIVER 3 clears the Remote Workday and Tailgate thresholds the RIVER 2 Pro can't.
Neither unit clears Weekend Camping, an 8-Hour Blackout, or Van Life Daily — both are simply undersized for those loads, and the RIVER 3's extra capacity narrows the gap without closing it.
What the Specs Don't Tell You
Selected because: Noise and expansion cards both fire against the RIVER 2 Pro specifically.
The noise card fires specifically against the RIVER 2 Pro: 62dB under loadA2 is loud enough that one owner modded the fan rather than tolerate itA1. Against the RIVER 3's 30dB, this isn't a subtle difference — it's the kind of gap you notice the first time you charge both units in the same room.
The expansion card fires the same direction. The RIVER 2 Pro is a closed system; what you buy is what you'll ever have. The RIVER 3's expansion path is the more consequential of the two cards for anyone thinking past this year's trip.
Growth Path
Selected because: This is the one section where the two units differ structurally, not just numerically.
solar input
This is the cleanest structural difference on the page: the RIVER 2 Pro's growth path is buying a second unit from scratch if you outgrow 768Wh. The RIVER 3's growth path is adding an expansion battery to the unit you already own.
If your power needs are stable — you know exactly what you'll run and it won't change — this section doesn't move the needle. If there's any chance your trips get longer or your gear list grows, it's worth real money in avoided future purchases.
Strengths & trade-offs
EcoFlow RIVER 2 Pro
Strengths
- +Costs $250 less
- +Lighter by 3.6 lb
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Can receive complaints about fan noise under heavy load.
- –Sealed capacity — the RIVER 3 MAX PLUS WIRELESS can add batteries to grow past 768Wh; this one can't.
EcoFlow RIVER 3 MAX PLUS WIRELESS
Strengths
- +Larger battery capacity
Trade-offs
- –Substantially more expensive (+$250) than the RIVER 2 Pro.
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
Neither unit gets there — the RIVER 3's larger capacity narrows the gap to about twice its capacity still needed, against more than three times for the RIVER 2 Pro, but both fall short of a full weekend's draw.
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
Neither unit
Both units run out well before an 8-hour multi-appliance blackout completes, though the RIVER 3's extra 428Wh buys meaningfully more runway before it does.
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
RIVER 3 MAX PLUS WIRELESS
Both are massively overpowered for CPAP — the RIVER 3 MAX PLUS WIRELESS finishes at 31% used against the RIVER 2 Pro's 49%. At a 40W load that reserve is comfort rather than necessity, so if a CPAP is the only thing you plan to run, price and portability should count for more than capacity does.
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
RIVER 3 MAX PLUS WIRELESS
The RIVER 2 Pro runs out of juice. It only has 653Wh usable, but this scenario needs 910Wh. The RIVER 3 MAX PLUS WIRELESS covers it and still has 7h of phone charging left over.
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
RIVER 3 MAX PLUS WIRELESS
The RIVER 2 Pro runs out of juice. It only has 653Wh usable, but this scenario needs 670Wh. The RIVER 3 MAX PLUS WIRELESS covers it and still has 23h of phone charging left over.
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
This load is well beyond either unit on its own — the RIVER 3 needs roughly 4.6 times its capacity to cover a full day of van-life draw, and the RIVER 2 Pro needs more than 7 times. This is exactly the scenario the RIVER 3's expansion path exists for.
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 six 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: RIVER 3 MAX PLUS WIRELESS runs 5h vs 3.2h.
$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 0–67.8hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–13.6hHigh-Draw Appliances
These reveal the real limits¹ 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 15, 2026
Verdict: the EcoFlow RIVER 3 MAX PLUS WIRELESS
The RIVER 3 MAX PLUS WIRELESS costs $100 more than the RIVER 2 Pro and answers with 428Wh more capacity, a documented expansion path the RIVER 2 Pro doesn't have, a 30dB noise floor against 62dB, and a $0.17 cost per lifetime kWh against $0.22. The RIVER 2 Pro's replies are real but narrower: 200W more continuous output (800W vs 600W) and a 400W higher surge ceiling. For most buyers running phones, laptops, and small appliances rather than heavy continuous loads, the newer unit's capacity, quiet, and growth path outweigh the older unit's output edge. Buyers who specifically need to run something in the 600-800W continuous range should check that number against the RIVER 3's ceiling before assuming an upgrade.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open EcoFlow's current price.
$599.00 list · direct from EcoFlow
or check the RIVER 2 Pro price$349.00 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 15, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS.
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, RIVER 2 Pro rates 4.5/5 (72nd percentile of 19 Compact-class units), and RIVER 3 MAX PLUS WIRELESS rates 3.4/5 (9th percentile of 24 Everyday-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.
62dB vs 30dB Is the Whole Story
This is the widest gap on the page, and it's not subtle — the RIVER 2 Pro's disclosed high-load noise is roughly double the RIVER 3's in perceived loudness terms. If this runs near where you sleep or work, this card alone should settle it.
One Unit Grows, One Doesn't
The RIVER 2 Pro's 768Wh is a hard ceiling — outgrowing it means a full new purchase. The RIVER 3's expansion battery support means the same base unit can grow with you, which is worth real money against a future upgrade.
10ms vs 30ms Switchover
The RIVER 3's sub-10ms switchover is faster and in a more capable class than the RIVER 2 Pro's basic 30ms standby — a real, if secondary, edge for anything sensitive to a brief power gap.
Same Five Years, Different Cost Per Year
$120 a warranty year on the RIVER 3 against $100 on the RIVER 2 Pro — the honest flip side of paying more upfront for more capacity.
Full record above — the Test Desk pick is the RIVER 3 MAX PLUS WIRELESS.
Check RIVER 3 MAX PLUS WIRELESS price →or check the RIVER 2 Pro 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 ($0.15/kWh vs $0.17/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
Growth path
RIVER 2 Pro
FIXED CAPACITYFixed at 768Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 220W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
RIVER 3 MAX PLUS WIRELESS
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,196Wh.
Accepts up to 200W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The RIVER 2 Pro is sealed at 768Wh, which is fine if that covers you. The RIVER 3 MAX PLUS WIRELESS starts at 1,196Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the RIVER 2 Pro doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow RIVER 2 Pro
The Facebook-sourced question about whether UPS use degrades the RIVER 2 Pro's battery life over timeA3 is one of the more telling data points here — it's the kind of long-term-ownership question that a thin ledger like this one can't fully answer. What is documented is the noise: EcoFlow's own spec sheet lists up to 62dB under high-wattage loadA2, severe enough that one owner performed a fan mod rather than live with itA1.
On the positive side, a van-life CPAP user reported the unit running a ResMed AirSense 11 overnight without issue via a DC-DC cableA4 — a low-draw exception to the noise complaint pattern. Overall this remains a thin, RIVER-2-Pro-specific ledger; most broader RIVER 2 discussion online doesn't distinguish sub-models cleanly enough to include here.
“Will using River 2 Pro as a UPS affect battery life ...”
Sources
ctrl-alt-rees.com
EcoFlow RIVER 3 MAX PLUS WIRELESS
This is a recently released configuration, and the ledger reflects that — it's press and blog review coverage rather than a mature owner-forum record. What's consistent across those sources is the noise story running the opposite direction from its sibling: reviewers repeatedly single out the RIVER 3 line's roughly 30dB rating as suitable for bedroom or overnight useB2B3B7, and one reviewer specifically frames it as smaller and quieter than the outgoing RIVER 2 Max despite similar capacity in that comparisonB8.
Recharge speed draws similar praise — empty to full in around 2.3 hours from mains, described as fast for the capacityB1 — alongside a sub-10ms UPS-style switchover reviewers call reliable enough that connected devices don't visibly dropB5. The one documented gripe: some buyers reportedly expect the 'wireless' branding to mean a built-in Qi charging pad, and it doesn't have oneB9 — though that complaint is sourced from the related base Plus model rather than this exact configuration.
“The RIVER 3 Max Plus (Wireless) can go from empty to full from mains in around 2.3 hours, which is very quick given its capacity.”
Sources
root-nation.com · backuppowerhub.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
- Fan noise at high wattage charging/discharging is a consistent owner and manufacturer-acknowledged complaint, severe enough that some owners physically mod the unit with quieter fans. [RIVER 2 Pro · 2 entries]
- Reviewers consistently praise the low fan noise (~30dB) as suitable for bedroom/overnight use. [RIVER 3 MAX PLUS WIRELESS · 4 entries]
- The UPS/fast-recharge combination is repeatedly cited as a practical real-world benefit for remote work and campsite hookups. [RIVER 3 MAX PLUS WIRELESS · 2 entries]
- A1
“I've since performed the same mod on my RIVER 2 PRO and it works great for that unit, too - although it did involve cutting away some of the internal plastic.”
ctrl-alt-rees.com blog — 'EcoFlow RIVER 2 Noisy Fan Fix!' · 2022-11-17 · [negative]
- A2
“When charging and discharging at high wattage, RIVER 2 Max and RIVER 2 Pro may make a noise up to 62db.”
EcoFlow official product page — RIVER 2 Series specs/FAQ footnotes · unknown · [negative]
- A3
“Will using River 2 Pro as a UPS affect battery life ...”
Facebook — EcoFlow Club group post title · unknown · [mixed]
- A4
“I'm very new to CPAP (1 week) and I live in a van. I have solar and a decent battery bank and I've got the ResMed DC-DC cable which powers my AirSense 11 AutoSet overnight no problem.”
Apnea Board forum — '[Equipment] EcoFlow River 2 Pro' thread · 2025-07 · [mixed]
- B1
“The RIVER 3 Max Plus (Wireless) can go from empty to full from mains in around 2.3 hours, which is very quick given its capacity.”
Wandering Bird blog — 'REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not?' · 2025-11 · [positive]
- B2
“The RIVER 3 Series is quiet. Very quiet. It's listed as only making 30dB.”
Wandering Bird blog — 'REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not?' · 2025-11 · [positive]
- B3
“Some cheaper units have noisy fans that kick on frequently, which isn't ideal when you're trying to sleep.”
Wandering Bird blog — 'REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not?' (comparative context, implies this unit avoids that problem) · 2025-11 · [positive]
- B5
“UPS (Uninterruptible Power Supply) switching on the RIVER 3 Plus/Max models is under 10 milliseconds... your devices won't suddenly power off.”
Wandering Bird blog — 'REVIEW: Ecoflow River 3 Max Plus- vanlife essential or not?' · 2025-11 · [positive]
- B7
“The only noticeable difference during high-power use is the increased fan noise.”
Root-Nation.com — 'EcoFlow River 3 Max Review' (covers sibling River 3 Max, mentions Max Plus family) · 2025-05 · [mixed]
- B8
“The new model is not only quieter but also smaller and lighter than the River 2 Max, despite having the same 512-watt capacity.”
Root-Nation.com — 'EcoFlow River 3 Max Review' (sibling model discussion, referencing River 3 Max/Plus family including Max Plus) · 2025-05 · [positive]
- B9
“Given that EcoFlow markets the RIVER 3 Plus with 'wireless' in its feature set... some buyers may expect a Qi wireless charging pad on top. It doesn't have one.”
BackupPowerHub.com — 'EcoFlow RIVER 3 Plus Review' (base Plus model, not Max Plus Wireless — included for contrast/confusion risk noted by owners/reviewers) · 2026-03 · [negative]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the RIVER 2 Pro if you…
- →You need 600-800W of continuous output specifically — a space heater, a larger cooler, anything in that band — where the RIVER 2 Pro's higher continuous rating is the deciding column.
- →You want the lower upfront price and don't plan to grow past 768Wh or care about the expansion path.
Buy the RIVER 3 MAX PLUS WIRELESS if you…
- →You want more capacity, a genuinely quiet fan, and a real expansion path for $100 more — this covers most buyers who aren't pushing continuous loads past 600W.
- →You might outgrow your current capacity in the next few years and want to add a battery module instead of buying a second unit outright.
If neither fits
If the real job is a full weekend camping trip (around 2,100Wh) or an 8-hour multi-appliance blackout (around 1,645Wh), both units fall well short of that math even at the RIVER 3's larger capacity. Step up to a 2,000Wh-plus unit, ideally one with its own expansion path, for that use case.
The Bottom Line
This is close to a clean generational upgrade: $100 more buys 428Wh of extra capacity, a real expansion path, and a fan 32dB quieter, and it still costs less per lifetime kWh delivered.
The one asterisk is continuous output — the RIVER 2 Pro's 800W against the RIVER 3's 600W is a real edge for anything drawing in that band. Outside of that specific case, take the newer unit.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the RIVER 3 MAX PLUS WIRELESS worth $100 more than the RIVER 2 Pro?
For most buyers, yes. It adds 428Wh of capacity, a real expansion path, and a fan quiet enough for a bedroom or desk — the RIVER 2 Pro's only structural reply is 200W more continuous output and a 400W higher surge ceiling.
Which one is quieter?
The RIVER 3 MAX PLUS WIRELESS by a wide margin — 30dB against the RIVER 2 Pro's disclosed 62dB. One RIVER 2 Pro owner modded the fan specifically to address this; reviewers consistently praise the RIVER 3 line's quiet as suitable for overnight use.
Can the RIVER 3 expand its capacity later?
Yes — it supports EcoFlow expansion batteries, so you can add capacity without replacing the base unit. The RIVER 2 Pro is a closed system; outgrowing its 768Wh means buying an entirely new unit.
Which one puts out more continuous power?
The RIVER 2 Pro, at 800W continuous against the RIVER 3's 600W, with a higher 1,600W surge ceiling against 1,200W. Anyone running a load in the 600-800W range specifically should check it against the RIVER 3's lower limit before upgrading.
Which is cheaper to own over its lifetime?
The RIVER 3 MAX PLUS WIRELESS, at $0.17 per lifetime kWh against the RIVER 2 Pro's $0.22 — the extra capacity behind the higher price tag brings the effective cost down, not up.
Where to buy
EcoFlow RIVER 2 Pro
$349.00
$349.00 list · direct from EcoFlow
EcoFlow RIVER 3 MAX PLUS WIRELESSPick
$599.00
$599.00 list · direct from EcoFlow
Prices may vary by retailer and are subject to change.