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Anker SOLIX F3800 Review
3,840Wh of storage, 6,000W continuous output, LiFePO4 cells. Listed at $1,799.99 at Anker SOLIX.
The Anker SOLIX F3800 is a extra large 2,600wh+ unit holding 3,840Wh. At $0.47 per watt-hour it is priced about where the rest of the band sits. It uses LiFePO4 cells rated for 3,000 cycles, so it is built to be kept rather than replaced.
Price and stock are shown on Amazon. We may earn a commission, which never changes what the figures say.
Computed from this unit’s published specification, not from a manufacturer claim. Method and the full catalogue comparison are in our power station price index.
What the Anker SOLIX F3800 will run, and for how long
Runtimes below are calculated from the 3,840Wh rated capacity, derated to 85% for AC loads and 92% for USB and 12V loads to cover inverter and conversion losses. They are arithmetic, not lab measurements, but they are the same arithmetic applied to every unit we track, so the comparison holds. Anything drawing more than the 6,000W continuous rating is left off the list because this unit cannot carry it, though the 9,000W surge rating covers brief startup spikes from motors and compressors.
| Load | Estimated runtime |
|---|---|
| Phone charge (12Wh) | 294 charges |
| Wi-Fi router (10W) | 326 hr |
| LED work light (10W) | 353 hr |
| CPAP, humidifier off (40W) | 82 hr |
| Laptop (60W) | 54 hr |
| 12V portable fridge (45W avg) | 73 hr |
| 55-inch TV (90W) | 36 hr |
Real figures land below these. A fridge cycles rather than drawing continuously, and cold weather costs a lithium pack usable capacity, so treat the table as the ceiling rather than the expectation.
Charging and power delivery
It accepts 1,800W from a wall outlet. Maximum solar input is 2,400W. At 70% of that rating, which is what a fixed panel realistically delivers across a good day, a full charge from empty is roughly 2 hr 17 min of usable sun. Switchover to battery is rated at 20ms, fast enough to keep a desktop or a router from dropping. Capacity is expandable with add-on batteries, so the starting figure is not the ceiling.
Anker SOLIX F3800 specifications
Manufacturer figures, gathered so you can read them against everything else we track rather than against the marketing page they came from.
| Capacity | 3,840Wh |
| Continuous AC output | 6,000W |
| Surge / peak | 9,000W |
| Cell chemistry | LiFePO4 |
| Rated cycle life | 3,000 cycles |
| Weight | 132.3 lb |
| Max solar input | 2,400W |
| Max AC input | 1,800W |
| UPS switchover | 20ms |
| Warranty | 5 years |
| Price at Anker SOLIX | $1,799.99 |
| Cost per watt-hour | $0.47 |
How the Anker SOLIX F3800 compares
The closest units we track from other manufacturers in the same band, matched on capacity rather than on price.
| Anker SOLIX F3800 | BLUETTI Elite 400 | Goal Zero Tank Pro 4000 | |
|---|---|---|---|
| Capacity | 3,840Wh | 3,840Wh | 3,994Wh |
| Output | 6,000W | — | — |
| Cycle life | 3,000 cycles | — | — |
| Weight | 132 lb | — | 80 lb |
| Price | $1,799.99 | $1,299 | $1,999.95 |
| Cost per watt-hour | $0.47 | $0.34 | $0.50 |
Where the Anker SOLIX F3800 sits in its band
We track 22 units in the extra large 2,600wh+ band with both a price and a published capacity. They run from $799 to $5,998.95, and from 1,536Wh to 5,120Wh. On cost per watt-hour the Anker SOLIX F3800 ranks 9 of 22, where 1 is the cheapest capacity in the band. That is mid-table: neither the bargain of the band nor the unit you would call overpriced. Ranking on cost per watt-hour deliberately ignores build quality, port selection and warranty, so read it as one input rather than as the answer.
Alternatives to the Anker SOLIX F3800
Units we track in the same band that are close enough to be genuine substitutes, matched on capacity. Each links to its own review.
- BLUETTI Elite 400 review — 3,840Wh, listed at $1,299, $0.34 per watt-hour, cheaper capacity than the Anker SOLIX F3800.
- Goal Zero Tank Pro 4000 review — 3,994Wh, listed at $1,999.95, $0.50 per watt-hour, dearer capacity than the Anker SOLIX F3800.
- Goal Zero Yeti PRO 4000 review — 3,994Wh, 375W output, listed at $3,999.95, $1 per watt-hour, dearer capacity than the Anker SOLIX F3800.
- Goal Zero Yeti PRO 8000 review — 3,994Wh, 375W output, listed at $5,998.95, $1.50 per watt-hour, dearer capacity than the Anker SOLIX F3800.
Who the Anker SOLIX F3800 suits
It is a sensible buy for whole-circuit backup, extended off-grid stays, and running heavy appliances without rationing them. It is the wrong tool for anyone who needs something genuinely portable, since capacity at this level comes with real weight, and for carrying it any distance on your own, at 132.3 lb.
Because the pack is expandable, it is also a reasonable starting point if you expect your needs to grow: you can add capacity later without paying a second time for an inverter you already own.
Anker SOLIX F3800 questions
How long will the Anker SOLIX F3800 run a fridge?
A full-size fridge averages about 50W once you account for the compressor cycling on and off. From 3,840Wh, derated to 85% for inverter losses, that is roughly 65 hr on a full charge. A 12V portable fridge draws less and will run considerably longer.
Can the Anker SOLIX F3800 be charged by solar?
Yes. It accepts up to 2,400W of solar input. Panels rarely hit their rated figure in the field, so plan on about 70% of the panel rating across a clear day.
Does the Anker SOLIX F3800 work as a UPS?
It switches to battery in about 20ms. That is quick enough for a desktop computer, a router or a modem, all of which tolerate a gap in that range without rebooting.
What warranty does the Anker SOLIX F3800 carry?
Anker SOLIX covers it for 5 years, and rates the cells for 3,000 charge cycles. Cycle life and warranty are different promises, and the cycle figure is the one that tells you how long the pack stays useful.
Is the Anker SOLIX F3800 worth it?
At $1,799.99 it works out at $0.47 per watt-hour. It costs less per watt-hour than the median unit in its band, which is the strongest argument in its favour. Read the comparison table above against the two closest rivals before deciding.
How we assess these
Every figure on this page comes from the manufacturer, and every derived number, cost per watt-hour and estimated runtime, is calculated the same way for all 446 products we track. That is what makes the comparison meaningful: we are not scoring units against a private impression of them, we are putting published figures side by side and doing the arithmetic in public. Where a manufacturer stays quiet, we say so rather than filling the gap.