Drawing · 20.7 × 15.5 × 9.8 in · 69.7 lb
- Capacity
- 2,560 Wh
- Output
- 2,400 W (2,800 surge)
- Weight
- 69.7 lb
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Anker SOLIX F2600 vs Anker SOLIX F3800
Anker's two big stations for home backup: whether the F3800's extra battery and its 240 V outlet are worth the step up from the F2600. The F3800 is the cheaper energy, 34% less per watt-hour at the makers' prices, holds 1,280 Wh more and gives 3,600 W more continuous output. The F2600 is 62.6 lb lighter: buy it for that, and the F3800 for the money.
Drawing · 27.6 × 15.3 × 15.6 in · 132.3 lb
$1,979.99 $2,199.99 at Anker SOLIX
Highest in our checks since Oct 7 (low $1,799.99)
- Capacity
- 3,840 Wh
- Output
- 6,000 W (9,000 surge)
- Weight
- 132.3 lb
Capacity
2,560 Wh
3,840 Wh
AC output
2,400 W
6,000 W
Surge
2,800 W
9,000 W
Solar input
1,000 W
2,400 W
Weight
69.7 lb
132.3 lb
Anker SOLIX
Anker SOLIX F2600
- Capacity
- 2,560 Wh
- AC output
- 2,400 W
- Surge
- 2,800 W
- Solar input
- 1,000 W
- Weight
- 69.7 lb
Buy it if you carry it more than you run it (69.7 lb against 132.3 lb).
Anker SOLIX
Anker SOLIX F3800
$1,979.99 $2,199.99 at Anker SOLIX
Highest in our checks since Oct 7 (low $1,799.99)
- Capacity
- 3,840 Wh
- AC output
- 6,000 W
- Surge
- 9,000 W
- Solar input
- 2,400 W
- Weight
- 132.3 lb
Buy it if you want the most stored energy per dollar ($0.52 against $0.78 per Wh).
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Figure by figure
Compare the differences that matter for your devices; Anker SOLIX F2600 leads on 1, Anker SOLIX F3800 on 7, and the rest are equal or not comparable.
| Figure | F2600 | F3800 |
|---|---|---|
| Capacity | 2,560 Wh | 3,840 Wh |
| Output (surge) | 2,400 W (2,800 surge) | 6,000 W (9,000 surge) |
| Weight | 69.7 lb | 132.3 lb |
| Price | $1,999.99 at Anker SOLIX, sold out when checked Oct 11, 2026 | $1,979.99 |
| Price per Wh | $0.78 | $0.52 |
| Chemistry | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 to 80% | 3,000 to 80% |
| Max solar input | 1,000 W | 2,400 W |
| Max AC input | 1,440 W | 1,800 W |
| Wall recharge | – | – |
| Expandable | yes, to 5,120 Wh | yes, to 26,880 Wh |
| UPS switchover | 20 ms | 20 ms |
| AC outlets | 5 | 8 |
| USB-C ports | 3 | 3 |
| Warranty | 5 years | 5 years |
| Dimensions | 20.7 x 15.5 x 9.8 in | 27.6 x 15.3 x 15.6 in |
Cycle counts are highlighted only when both makers rate them to the same remaining capacity. A full recharge is not ranked against a charge to 80%. Missing figures never count as an advantage. These are manufacturer ratings; matching endpoints do not prove identical test conditions.
Rated cycles: F2600, 3,000 to 80%; F3800, 3,000 to 80%.
How the comparison is worked out
| Figure | F2600 | F3800 | Meaning |
|---|---|---|---|
| Capacity | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Output (surge) | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Weight | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Price | F2600 price source · checked Oct 5, 2026 | F3800 price source · checked Oct 9, 2026 | As the maker states it; a dash where not published |
| Price per Wh | F2600 price source · checked Oct 5, 2026 | F3800 price source · checked Oct 9, 2026 | Price ÷ rated Wh; calculated, not measured |
| Chemistry | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Rated cycles | F2600 spec sheet | F3800 spec sheet | Stated cycles and remaining-capacity percentage; conditions may differ |
| Max solar input | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Max AC input | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Wall recharge | F2600 spec sheet | F3800 spec sheet | Keep the full or 80% charge endpoint |
| Expandable | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| UPS switchover | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| AC outlets | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| USB-C ports | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Warranty | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
| Dimensions | F2600 spec sheet | F3800 spec sheet | As the maker states it; a dash where not published |
Estimated AC energy = rated Wh × 0.85. Runtime = estimated AC energy ÷ load W, with no reserve. Capacity and weight differences use the displayed figures; price per Wh uses each model's own price and the day it was checked. The device draws are in the watt-hour calculator.
- Capacity: F3800 minus F2600 = 1,280 Wh (50% of the F2600 figure).
- Carry weight: F3800 minus F2600 = 62.6 lb (89.8% of the F2600 figure).
- Price per Wh: F3800 minus F2600 = -0.27 USD/Wh (-34% of the F2600 figure).
Will it run your gear?
Check whether each unit has enough battery and output for the devices you want to run.
| Use | Needs | F2600 | F3800 |
|---|---|---|---|
| a day of home backup (a full-size refrigerator, a router, phones and lights for a day) | 2,323 Wh, 161 W running, 1,351 W startup | yes | yes |
| a night of CPAP (a CPAP with its humidifier for one 8-hour night) | 599 Wh, 53 W running, 104 W startup | yes | yes |
| two nights of camping (camp lights, phones, a laptop and a fan for two nights) | 2,066 Wh, 157 W running, 157 W startup | yes | yes |
| a day in an RV (a day of RV lights, TV, phones and a laptop) | 648 Wh, 156 W running, 156 W startup | yes | yes |
| a working day in a van (a working day of laptop, Starlink, lights and a fan) | 1,674 Wh, 189 W running, 189 W startup | yes | yes |
| a laptop and two phones (a laptop for six hours and two phone charges) | 396 Wh, 60 W running, 60 W startup | yes | yes |
Runtime by device
Hours = capacity × 0.85 ÷ device watts, with the draws from the device table; "Start" says whether the output and surge ratings cover the startup figure we use for each device (the refrigerator, 1,300 W startup allowance, from a larger 27 cu ft Whirlpool's tech sheet), so a "yes" there means likely, not certain, to start yours.
| Device | Draw W | F2600 h | Start | F3800 h | Start |
|---|---|---|---|---|---|
| CPAP machine (with heated humidifier) | 53 | 41.1 | yes | 61.6 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw) | 41 | 52.7 | yes | 79 | yes |
| Laptop (MacBook Air, charging) | 40 | 54.4 | yes | 81.6 | yes |
| Wi-Fi router | 24 | 90.7 | yes | 136 | yes |
| Starlink Mini (router built in) | 33 | 67 | yes | 100.4 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 24.4 | yes | 36.7 | yes |
| Space heater, 1500 W | 1,500 | 1.5 | yes | 2.2 | yes |
Buy the F2600 if…
- you carry it more than you run it (69.7 lb against 132.3 lb)
Buy the F3800 if…
- you want the most stored energy per dollar ($0.52 against $0.78 per Wh)
- the $20 difference matters more than the specs
- you need more continuous output (6,000 W continuous and 9,000 W surge, against 2,400 W and 2,800 W)
- you need a higher solar input ceiling (2,400 W against 1,000 W); actual recharge depends on the panels
- you want the extra capacity (3,840 Wh against 2,560 Wh)
More Anker SOLIX models. Every model we list: all 116 in one table. Your own devices: the watt-hour calculator.
Questions buyers ask
Which is better for power outages, the F2600 or the F3800?
Anker SOLIX F2600 states a 20 ms switchover, so it can sit between the wall and a fridge or router and take over when the power cuts, once the device is in an outlet the manual gives the backup to and any AC timeout is off (for a CPAP or a computer, check that device rides through the switch); Anker SOLIX F3800 states 20 ms. Anker SOLIX F3800 holds more (3,840 against 2,560). Check your appliance's startup watts against the surge figures in the table.
Which is cheaper per watt-hour?
F3800 at $0.52 per Wh against $0.78. This compares purchase price with rated capacity, not lifetime delivered energy.
Can either run a window air conditioner?
Only if the air conditioner's running watts stay under the AC output (2,400 W on the F2600, 6,000 W on the F3800) and its start fits the surge figures in the table: read both on the air conditioner's label or in its manual, and test it before you rely on it. For the hours, multiply the rated Wh by 0.85 for inverter losses and divide by the running watts. A unit whose label says 500 W, for example, would run about 4.4 hours on the F2600 and about 6.5 hours on the F3800 on a full charge, if its compressor ran without a break.