Drawing · 9.6 × 8.5 × 5.7 in · 7.7 lb
- Capacity
- 243 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 110 W
- Weight
- 7.7 lb
Maker price$209 at EcoFlow, checked Oct 11, 2026
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Aferiy · Compact (under 600 Wh)
Aferiy P040
A compact unit, 256 Wh, 400 W, 8.8 lb, $169 $299 at Aferiy, checked Oct 11, 2026 ($0.66 per Wh). By our sizing it holds phones and USB lights, but none of the six uses we size.
From the maker's published figures and our own calculations; we have not tested it ourselves.
Estimated runtimehours24-hour dial
Rated capacity
256 Wh
256 Wh × 0.85 ÷ device watts. An estimate, not a measured test. Startup and connections need checking.
Drawing · 10.2 × 6.9 × 7.9 in · 8.8 lb
Aferiy P040 $169 $299 at Aferiy, checked Oct 11, 2026
Capacity 256Wh
AC output 400W
Surge Not published
Chemistry LiFePO4
Rated cycles 4,000 to 85%
Weight 8.8lb
Max solar input 120W
Price per Wh $0.66
Should you buy it?
Not for: a day of home backup (too little capacity: needs 2,323 Wh and 1,351 W at startup); a night of CPAP (too little capacity: needs 599 Wh and 104 W at startup); two nights of camping (too little capacity: needs 2,066 Wh and 157 W at startup); a day in an RV (too little capacity: needs 648 Wh and 156 W at startup); a working day in a van (too little capacity: needs 1,674 Wh and 189 W at startup); a laptop and two phones (too little capacity: needs 396 Wh and 60 W at startup).
Choose it for a 7-year warranty against 2 and a 5.2 lb lighter carry: $100 less than the Pecron E500LFP.
Choose the Pecron E500LFP instead if you want the most battery for the money: $0.47 per Wh against $0.66, $100 more, 5.2 lb heavier; you give up warranty years (2 against 7).
Not published The maker publishes no surge figure, so motor and compressor starts rest on its continuous rating.
About 218 Wh reaches the AC outlets after the 0.85 loss allowance (an estimate, not a measurement). At $0.66 per watt-hour, compare its cost with the charging speed and carry weight you need. It stores 29.1 Wh per pound. We list 28 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 | 4.8 | yes |
| CPAP machine (with heated humidifier) | 53 | 4.1 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw, compressor cycling) | 41 | 5.3 | no |
| Laptop (MacBook Air, charging) (charger rating, continuous) | 40 | 5.4 | yes |
| Wi-Fi router | 24 | 9.1 | yes |
| Starlink Mini (router built in) | 33 | 6.7 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 2.4 | yes |
| Camp LED light set (4 chainable lights) | 6 | 34.5 | 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
- Two AC outlets, 400 W in total
- Two USB-C ports, up to 100 W from one port
- One USB-A port
- One 12 V outlet
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 8.8 lb.
At a glance
How it compares with the other 28 compact models, on the makers' figures. We don't boil it down to one score; see how we pick.
| What it can power | Covers none of the uses we size. Output and surge cover 13 of the 17 devices in our list, on the startup figures we use |
|---|---|
| Price per Wh | $0.66 per Wh, 8th lowest of 29 compact units |
| Portability | 8.8 lb, 13th lightest of 28 compact units |
| Recharge speed | 120 W of solar input: at least 2.1 hours of full sun at that limit to refill (an ideal minimum, not clock time); 300 W from the wall |
| Chemistry and cycle life | LiFePO4, rated 4,000 cycles to 85% |
| Expandability | No expansion stated; 10 ms UPS switchover |
Full spec sheet
| Capacity | 256 Wh |
|---|---|
| Chemistry | LiFePO4 |
| Rated cycle life | 4,000 to 85% |
| Expandable | – |
| Continuous AC output | 400 W |
|---|---|
| Surge (peak) output | – |
| AC outlets | 2 |
| USB-C ports / highest output | 2 / 100 W |
| USB-A ports | 1 |
| 12 V outputs | 1 |
| Wireless charging pad | – |
| UPS / EPS switchover | 10 ms |
| Max AC input | 300 W |
|---|---|
| Wall recharge time | 1.2 h |
| Max solar input | 120 W |
| Stated solar recharge time | – |
| App control | – |
| Weight | 8.8 lb (4 kg) |
|---|---|
| Dimensions | 10.2 x 6.9 x 7.9 in (259 x 174 x 201 mm) |
| Wh per lb | 29.1 |
| Release year | – |
| Warranty | 7 years |
| List price | |
|---|---|
| Store price | $169 |
| Price per Wh | $0.66 |
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 what a 10 ms switchover means if you use it as a UPS.
Which maker panels its solar input takes, how to wire them and the hours of sun to refill it: the P040 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 · 10.2 × 6.9 × 7.9 in · 8.8 lb
- Capacity
- 256 Wh
- AC output
- 400 W
- Surge
- Not published
- Solar input
- 120 W
- Weight
- 8.8 lb
Maker price$169 $299 at Aferiy, checked Oct 11, 2026
Drawing · 9.1 × 6 × 6.6 in · 7.9 lb
- Capacity
- 256 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 100 W
- Weight
- 7.9 lb
Maker price$249 at Jackery, sold out when checked Oct 11, 2026
Drawing · 9.2 × 9.1 × 5.8 in · 10.4 lb
- Capacity
- 286 Wh
- AC output
- 600 W
- Surge
- 1,200 W
- Solar input
- 220 W
- Weight
- 10.4 lb
Maker price$259 $299 at EcoFlow, checked Oct 9, 2026
Drawing · 6.5 × 6.3 × 9.5 in · 9.1 lb
- Capacity
- 288 Wh
- AC output
- 300 W
- Surge
- 600 W
- Solar input
- 100 W
- Weight
- 9.1 lb
Maker price$329.99 at Anker SOLIX, sold out when 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 |
|---|---|---|---|---|---|---|---|---|---|
| EcoFlow RIVER 2 (240) | 243 | 300 W (600 surge) | 7.7 | 110 | LiFePO4 | 3,000 to 80% | $209checked Oct 11, 2026 | $0.86 | See it at EcoFlow |
| Aferiy P040 | 256 | 400 W | 8.8 | 120 | LiFePO4 | 4,000 to 85% | $169 | $0.66 | Check price on AmazonAmazon's price may differ See it at Aferiy |
| Jackery Explorer 240 v2 | 256 | 300 W (600 surge) | 7.9 | 100 | LiFePO4 | 3,000 to 80% | $249sold out when checked Oct 11, 2026 | $0.97 | See it at Jackery |
| EcoFlow RIVER 3 Plus | 286 | 600 W (1,200 surge) | 10.4 | 220 | LiFePO4 | 3,000 to 80% | $259 | $0.91 | See it at EcoFlow Check price on AmazonAmazon's price may differ |
| Anker SOLIX C300 | 288 | 300 W (600 surge) | 9.1 | 100 | LiFePO4 | 3,000 to 80% | $329.99sold out when checked Oct 11, 2026 | $1.15 | See it at Anker SOLIX Check price on AmazonAmazon's price may differ |
Check price on AmazonAmazon's price may differ See it at Aferiy Every Aferiy 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: Aferiy product page
- Price: Aferiy product page, checked Oct 11, 2026
- How the figures and picks are made