EcoFlow DELTA 3 Max (2048Wh)
On one charge the EcoFlow DELTA 3 Max (2048Wh) runs a typical refrigerator about 17 hours, and runs an older furnace blower about 8.7 hours.
Buy it if you want 2,048 Wh for a fridge through a day-long outage and will never add a battery.
Skip it if you may add a battery later: it takes none. The EcoFlow DELTA 2 Max has the same 2,048 Wh battery and takes extra batteries, for $150 more today. It has no 240 V for a well pump. What to buy instead.
Price: $899 on Amazon (checked November 1, 2026).
2,048 Wh battery (1,656 usable)2,400 W output4,800 W peak
$543 per usable kWh at Amazon prices checked November 1, 2026 ($899 for 1,656 usable Wh). How we work it out
Price checked November 1, 2026; Amazon shows today’s price. This is the listing for this model on its own, not a bundle.
Planning figures: a typical refrigerator averages about 83 W; an older furnace blower averages about 182 W. Yours may use less or more; the range is in the table below. How long other power stations run a refrigerator. A furnace blower is wired in: it needs an inlet or transfer switch fitted by an electrician.
- Wall recharge
- 0-80% in 68 min on wall power
- Extra batteries
- Not listed by EcoFlow (only the Max Plus)
- Recalls
- no CPSC recall names this exact model (screened 2026-10-09)
Check you have the right model. Not the same as: EcoFlow DELTA 2 Max (the same battery and output); EcoFlow DELTA 3 Max Plus (2048Wh) (a similar name, a different model: 2,048 Wh, 3,000 W). Read the model name on the unit’s label, not the box or the listing.
Not the recalled EcoFlow DELTA Max (2000). CPSC recalled it on October 9, 2025; it is a different product. The recalled unit has 'EFD310' and 'EcoFlow DELTA Max (2000)' on the label underneath. Read the CPSC notice.
What independent tests measured
- Power it uses just to stay on: 27 W with the AC outlets on and nothing plugged in (The Solar Lab).
- What we use: 1,656 Wh usable at a typical 300 W load; every hours figure on this page counts the idle draw (store estimated: no test at a stated load). The one rule we use.
How long will the EcoFlow DELTA 3 Max run a fridge, CPAP, sump pump or furnace?
| Appliance | Average draw | On one charge | Starts it? |
|---|---|---|---|
| Fridge, new and efficient (ENERGY STAR) | 54 W | about 23 h | starts it |
| Fridge, typical | 83 W | about 17 h | starts it |
| Fridge, old or large | 130 W | about 12 h | starts it |
| CPAP, heated humidifier on | 55 W | about 2.8 nights (23 h) | starts it |
| CPAP, humidifier off, from the 12 V car socket | 11.2 W | about 14 nights | starts it |
| Sump pump | 136 W | about 11 h (3.3–30 h) | starts it |
| Gas furnace blower, older single-speed | 182 W | about 8.7 h (2.1–12 h) | starts it |
| Gas furnace blower, variable-speed | 132 W | about 11 h | runs it |
| Well pump (240 V) | 65 W | — | needs 240 V |
One appliance at a time, from the 2,048 Wh battery, counting the power it uses just to stay on (1,656 Wh usable at a 300 W load). Fridge figures come from ENERGY STAR’s list of certified models, plus a 20 W allowance for the power station’s own draw and doors opening. CPAP with the humidifier on is the middle of the 30–100 W a CPAP with a heated humidifier draws; humidifier off is ResMed’s own 12 V figure for an AirSense 10 on ResMed’s DC cord. A night is 8 hours. Pumps and blowers switch on and off, so their average draw is far below their running watts; the hours are hours of outage, and the range runs from one that runs often to one that rarely does. A furnace blower is wired in: it needs an inlet or transfer switch fitted by an electrician. It has no 240 V output, so it cannot run a 240 V well pump (needs 240 V); a 120 V well pump is a different case, so check the pump’s label.
Every appliance we track
The same numbers as a table
| Appliance | Typical average draw | Hours on one charge |
|---|---|---|
| Fridge | 83 W | about 17 h |
| Furnace blower, older single-speed | 182 W | about 8.7 h |
| Furnace blower, variable-speed | 132 W | about 11 h |
| CPAP | 55 W | about 23 h |
| Sump pump | 136 W | about 11 h |
| Wi-Fi router and modem | 24 W | about 37 h |
| Laptop | 52 W | about 23 h |
Who should skip the EcoFlow DELTA 3 Max, and what to buy instead
- You may add an extra battery later: EcoFlow DELTA 2 Max. 2,048 Wh, 2,400 W output, 120 V only, 50.7 lb; runs a typical fridge about 18 hours. $1,049 at Amazon
- You want more output and room for extra batteries: EcoFlow DELTA 3 Max Plus (2048Wh). 2,048 Wh, 3,000 W output, 120 V only; runs a typical fridge about 17 hours. No Amazon listing for the unit on its own today.
- A fridge for about half a day is enough: EcoFlow DELTA 3. 1,024 Wh, 1,800 W output, 120 V only, 27.6 lb; runs a typical fridge about 9.5 hours. $599 at Amazon
Prices checked November 1, 2026.
Photos from the listing for this model on its own.
The range behind that
This is a 2,048Wh battery with 2,400W of output, which means it gives back about 1,656 watt-hours at a typical household load (estimated) and can run anything drawing up to 2,400 watts at once.
It runs indoors and makes no fumes. Of the 16 household loads we track, it can run 14 for at least part of a day. It would keep a refrigerator going for 12–23 hours, from a hard-working fridge to an efficient one.
Figures from the maker’s own pages and manual, with a link beside each one.
Judged in: Which EcoFlow power station should you buy? (every EcoFlow model compared); Which EcoFlow DELTA 3? The whole family, judged against one plan (compared).
What it can run
| Load | Running / starting | Starts it? | Typical | Range |
|---|---|---|---|---|
| Wi-Fi router and modem | 15–40 W | starts it | about 37h | 28–46h |
| Phone charging and small USB devices | 10–40 W | starts it | about 57h | 37–68h |
| A few LED lights | 15–80 W | starts it | about 46h | 21–64h |
| Laptop and monitor | 45–150 W | starts it | about 23h | 10–42h |
| CPAP | 30–100 W | starts it | about 23h | 14–33h |
| Refrigerator/freezer | 100–700 W
starts at up to 2,900 W |
starts it | about 17h | 12–23h |
| Chest freezer | 80–500 W
starts at up to 2,200 W |
starts it | about 23h | 7.2–49h |
| Sump pump | 700–1,500 W
starts at up to 4,500 W |
starts it | about 11h | 3.3–30h |
| Window air conditioner | 500–3,250 W
starts at up to 7,200 W |
may not start a hard-starting one | about 2.4h | 0.7–8h |
| Microwave | 800–1,800 W | starts it | about 59 minutes of running time | short bursts |
| Coffee maker | 700–1,500 W | starts it | about 70 minutes of running time | short bursts |
| Television | 40–250 W | starts it | about 23h | 6.5–49h |
| Garage door opener | 300–800 W
starts at up to 1,800 W |
starts it | about 2 hours of running time | short bursts |
| 12 V compressor fridge (camping) | 25–110 W
starts at up to 320 W |
starts it | about 42h | 23–59h |
Hours of use on one charge. Typical is the middle of our range for that appliance; the range runs from a hard-working unit to an efficient one. Short-burst loads (microwave, coffee maker, garage door) show running time at full power instead. “Starts it” means the peak output covers even a hard-starting one.
What a kilowatt-hour costs
| What | Amazon price | Usable energy | Per usable kWh |
|---|---|---|---|
| The station | $899 | 1,656 Wh | $543 |
Per usable kWh = Amazon price divided by usable energy: what the unit gives back at a typical 300 W household load, counting the power it uses just to stay on. The same rule runs everywhere on this site (how). Station price checked November 1, 2026; we show prices only on the day they were checked and keep no price history.
Specifications
- Battery
- 2,048 Wh (about 1,656 Wh usable, estimated)
- Continuous output
- 2,400 W
- Peak output
- 4,800 W
- Output voltage
- 120 V
- Wall recharge
- 0-80% in 68 min on wall power source
- Extra batteries
- Not listed by EcoFlow (only the Max Plus) source
- Warranty
- 3-year warranty, extendable to 5 years by registering source
- Weight
- 44.8 lb (20.3 kg) source
Living with it
What the maker’s own pages and manual say about owning this unit, and what owners report in public. Each line links to where it was read. Nothing here is our own test.
- Switchover when the grid drops
- 10 msus.ecoflow.com
- Wall recharge
- 0-80% in 68 min on wall powerus.ecoflow.com
- AC input
- 1,800 W AC inputus.ecoflow.com
- App
- EcoFlow app (OASIS 3.0) over Wi-Fi and Bluetoothus.ecoflow.com
- Expansion
- Not listed. EcoFlow's DELTA 3 Max page sells extra-battery bundles only for the DELTA 3 Max Plus.us.ecoflow.com
- Warranty
- 5-year warranty: 3-year standard plus 2-year extension on EcoFlow app registrationus.ecoflow.com
Recall screen
No recall names this model — but a similarly named product was recalled
No recall names the DELTA 3 Max. CPSC 26-010 (2025-10-09) recalls the EcoFlow DELTA Max (2000), model EFD310, a different product.
This check cannot clear your own unit. Most recalls cover only certain serial numbers. Read the model and serial number off the label on the unit itself, then check the maker's recall page before you use it, sell it, or buy it.
Use the CPSC recall search.
How we know the screen was not simply blind
Finding nothing only means something if the search could have found something. So we searched the same records for this brand and got 1 recall. That proves the screen can see this brand, so finding nothing for this model is a real result.
Buying the right one
Verified listing — the unit on its own
ASIN B0FQV6LMVX · $899.00 when checked on November 1, 2026 · purchasable
Title states 2048Wh and 2400W, matching the maker's figures exactly. Prices change: Amazon shows today’s price.
Listings we turned down
Searching for this model returns bundles, sibling models and refurbished units alongside the bare product. These are the ones we checked and did not link, with the reason.
| Listing | Price | Why it is not this product |
|---|---|---|
| EF ECOFLOW DELTA 3 MAX Portable Power Station with 220W Solar Panel, 2048Wh | 34 | $1,199 | Listing is a bundle (solar panel or kit), not the bare base unit our specifications describe. |
| EF ECOFLOW DELTA 3 MAX Portable Power Station with 400W Solar Panel, 2048Wh | 34 | $1,399 | Listing is a bundle (solar panel or kit), not the bare base unit our specifications describe. |
| EF ECOFLOW Delta 3 Portable Power Station, 1024Wh 1800W | LiFePO4 Battery, Full | $599 | Listing is a different model, not this one. |
| EF ECOFLOW Solar Generator Delta 3 Classic with 220W Solar Panel, 1024Wh | 1800W | $699 | Listing is a bundle (solar panel or kit), not the bare base unit our specifications describe. |
| EF ECOFLOW Portable Power Station RIVER 3 230,230 Wh,550W Up to 600W | 1 Hr Fast | $299 | Listing is a different model, not this one. |