Drawing · 15.7 × 11 × 12.4 in · 48.5 lb
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Surge
- Not published
- Solar input
- 500 W
- Weight
- 48.5 lb
Maker price$749 at Aferiy, checked Oct 11, 2026
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EcoFlow · Large (1,500 to 3,499 Wh)
EcoFlow DELTA 2 Max
A large unit, 2,048 Wh, 2,400 W (4,800 surge), 50 lb, $1,029 $1,299 at EcoFlow, checked Oct 11, 2026 ($0.50 per Wh). By our sizing it holds a night of CPAP, a day in an RV, a working day in a van and a laptop and two phones, but not a day of home backup or two nights of camping.
From the maker's published figures and our own calculations; we have not tested it ourselves.
Estimated runtimehours24-hour dial
Rated capacity
2,048 Wh
2,048 Wh × 0.85 ÷ device watts. An estimate, not a measured test. Startup and connections need checking.
Drawing · 19.6 × 9.5 × 12 in · 50 lb
EcoFlow DELTA 2 Max $1,029 $1,299 at EcoFlow, checked Oct 11, 2026
Capacity 2,048Wh
AC output 2,400W
Surge 4,800W
Chemistry LiFePO4
Rated cycles 3,000 to 80%
Weight 50lb
Max solar input 1,000W
Price per Wh $0.50
Should you buy it?
Buy it for: a night of CPAP (a CPAP with its humidifier for one 8-hour night); a day in an RV (a day of RV lights, TV, phones and a laptop); a working day in a van (a working day of laptop, Starlink, lights and a fan); a laptop and two phones (a laptop for six hours and two phone charges).
Not for: a day of home backup (too little capacity: needs 2,323 Wh and 1,351 W at startup); two nights of camping (too little capacity: needs 2,066 Wh and 157 W at startup).
Choose it for a 13.3 lb lighter carry: $130 more than the Pecron F3000LFP.
Choose the Pecron F3000LFP instead if you want the most battery for the money: $0.29 per Wh against $0.50, $130 less, 13.3 lb heavier.
Not published The maker publishes no UPS switchover time, so it is not a confirmed uninterrupted supply.
About 1,741 Wh reaches the AC outlets after the 0.85 loss allowance (an estimate, not a measurement). At $0.50 per watt-hour, compare its cost with the charging speed and carry weight you need. It stores 41 Wh per pound. We list 36 other models in its size class; the four nearest in capacity are compared below.
What it runs, and for how long
Hours = capacity × 0.85 ÷ device watts, with the draws from the device table.
| Device | Draw W | Hours | Output and surge cover it? |
|---|---|---|---|
| CPAP machine (no heated humidifier) | 45 | 38.7 | yes |
| CPAP machine (with heated humidifier) | 53 | 32.8 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw, compressor cycling) | 41 | 42.2 | yes |
| Laptop (MacBook Air, charging) (charger rating, continuous) | 40 | 43.5 | yes |
| Wi-Fi router | 24 | 72.5 | yes |
| Starlink Mini (router built in) | 33 | 53.6 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 19.6 | yes |
| Camp LED light set (4 chainable lights) | 6 | 276.3 | yes |
"Yes" means its continuous output covers the draw and its surge rating covers the startup figure we use, by arithmetic on ratings, not a test. Startup figures: the CPAP with its humidifier, 104 W at startup, from ResMed's peak figure; the refrigerator, 1,300 W startup allowance, from a larger 27 cu ft Whirlpool's tech sheet. Your own appliance's label or manual has its own.
Sockets and size
- Six AC outlets, 2,400 W in total, 4,800 W surge
- Two USB-C ports, up to 100 W from one port
- Four USB-A ports
- Three 12 V outlets
How many of each socket and their limits, from the maker's spec sheet; it does not say where each one sits on the unit. It weighs 50 lb.
At a glance
How it compares with the other 36 large models, on the makers' figures. We don't boil it down to one score; see how we pick.
| What it can power | Covers a night of CPAP, a day in an RV, a working day in a van, and a laptop and two phones. Output and surge cover all 17 devices in our list, on the startup figures we use |
|---|---|
| Price per Wh | $0.50 per Wh, 25th lowest of 37 large units |
| Portability | 50 lb, 18th lightest of 37 large units |
| Recharge speed | 1,000 W of solar input: at least 2 hours of full sun at that limit to refill (an ideal minimum, not clock time); 1,800 W from the wall |
| Chemistry and cycle life | LiFePO4, rated 3,000 cycles to 80% |
| Expandability | Grows to 6,000 Wh with extra batteries |
Full spec sheet
| Capacity | 2,048 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Rated cycle life | 3,000 to 80% |
| Expandable | yes, to 6,000 Wh |
| Continuous AC output | 2,400 W |
|---|---|
| Surge (peak) output | 4,800 W |
| AC outlets | 6 |
| USB-C ports / highest output | 2 / 100 W |
| USB-A ports | 4 |
| 12 V outputs | 3 |
| Wireless charging pad | – |
| UPS / EPS switchover | – |
| Max AC input | 1,800 W |
|---|---|
| Wall recharge time | – |
| Max solar input | 1,000 W |
| Stated solar recharge time | – |
| App control | yes |
| Weight | 50 lb (23 kg) |
|---|---|
| Dimensions | 19.6 x 9.5 x 12 in (497 x 242 x 305 mm) |
| Wh per lb | 41 |
| Release year | – |
| Warranty | 5 years |
| List price | |
|---|---|
| Store price | $1,029 |
| Price per Wh | $0.50 |
Before using the battery's cycle rating to judge value, read what LiFePO4 versus NMC means for lifespan and weight.
What the output figures mean for your devices: running and surge watts, and which units can stand in for a UPS.
Which maker panels its solar input takes, how to wire them and the hours of sun to refill it: the DELTA 2 Max solar setup.
Alternatives at this size
Listed smallest to largest by capacity; this unit is among them.
Select up to three models to compare.
Drawing · 15.7 × 11 × 12.4 in · 47.6 lb
- Capacity
- 2,048 Wh
- AC output
- 2,800 W
- Surge
- Not published
- Solar input
- 1,200 W
- Weight
- 47.6 lb
Maker price$899 at Aferiy, checked Oct 11, 2026
Drawing · 15.7 × 11 × 12.4 in · 47.6 lb
- Capacity
- 2,048 Wh
- AC output
- 3,000 W
- Surge
- Not published
- Solar input
- 1,200 W
- Weight
- 47.6 lb
Maker price$719 $1,099 at Aferiy, checked Oct 11, 2026
Drawing · 18.1 × 9.8 × 10.1 in · 41.7 lb
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Surge
- 4,000 W
- Solar input
- 800 W
- Weight
- 41.7 lb
Maker price$899.99 $1,499.99 at Anker SOLIX, checked Oct 9, 2026
Drawing · 19.6 × 9.5 × 12 in · 50 lb
- Capacity
- 2,048 Wh
- AC output
- 2,400 W
- Surge
- 4,800 W
- Solar input
- 1,000 W
- Weight
- 50 lb
Maker price$1,029 $1,299 at EcoFlow, checked Oct 11, 2026
No models match these filters.
| Model | Wh | Output W (surge) | lb | Solar input W | Chemistry | Cycles | Price at maker $ | Price per Wh | Store |
|---|---|---|---|---|---|---|---|---|---|
| Aferiy P210 | 2,048 | 2,400 W | 48.5 | 500 | LiFePO4 | 4,000 to 85% | $749checked Oct 11, 2026 | $0.37 | Check price on AmazonAmazon's price may differ See it at Aferiy |
| Aferiy P280 | 2,048 | 2,800 W | 47.6 | 1,200 | LiFePO4 | 4,000 to 85% | $899checked Oct 11, 2026 | $0.44 | See it at Aferiy |
| Aferiy P300 | 2,048 | 3,000 W | 47.6 | 1,200 | LiFePO4 | 4,000 | $719 | $0.35 | Check price on AmazonAmazon's price may differ See it at Aferiy |
| Anker SOLIX C2000 Gen 2 | 2,048 | 2,400 W (4,000 surge) | 41.7 | 800 | LiFePO4 | 4,000 to 80% | $899.99 | $0.44 | See it at Anker SOLIX Check price on AmazonAmazon's price may differ |
| EcoFlow DELTA 2 Max | 2,048 | 2,400 W (4,800 surge) | 50 | 1,000 | LiFePO4 | 3,000 to 80% | $1,029 | $0.50 | See it at EcoFlow Check price on AmazonAmazon's price may differ |
Side by side, figure by figure: DELTA 2 Max vs EcoFlow DELTA 3 Max and DELTA 2 Max vs EcoFlow DELTA Pro 3. Every comparison.
See it at EcoFlow Check price on AmazonAmazon's price may differ Every EcoFlow model we cover Does it hold enough for your devices?
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Before connecting panels, compare your array's cold-morning open-circuit voltage and short-circuit current with this model's solar-input limits in its manual.
Sources
- Specs: EcoFlow product page
- Price: EcoFlow product page, checked Oct 11, 2026
- How the figures and picks are made