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Anker SOLIX SOLIX F3800 Plus sizing guide
The newer-generation F3800 — same 3,840 Wh and 6,000 W continuous rating, but double the solar input (3,200 W) and adds 240V gas-generator bypass charging for extended outages. Here's exactly what it runs, how long, and which outages it covers — computed, not marketed.
~1.5 h with 240V generator input; under 3 h AC; up to 3,200W dual-MPPT solar · 137 lb · 1× NEMA L14-30R (120/240V), 2× NEMA 5-20R, 1× NEMA TT-30R, USB-A/C, car · expandable with add-on batteries.
What the SOLIX F3800 Plus runs — and for how long
| Appliance | Running | Runs it? | Approx. runtime |
|---|---|---|---|
| Refrigerator (modern) | 150 W (1,200 W surge) | yes | ~66 h |
| Chest Freezer | 100 W (1,000 W surge) | yes | ~99 h |
| CPAP Machine (no humidifier) | 40 W | yes | ~86 h |
| CPAP with Heated Humidifier | 60 W (95 W surge) | yes | ~72 h |
| Oxygen Concentrator | 350 W (600 W surge) | yes | ~9.9 h |
| Space Heater (1500 W) | 1,500 W | yes | ~2.3 h |
| Window AC (8,000 BTU) | 715 W (1,250 W surge) | yes | ~6.9 h |
| Window AC (12,000 BTU) | 1,100 W (1,800 W surge) | yes | ~4.5 h |
| Gas Furnace Blower (1/2 HP) | 800 W (2,350 W surge) | yes | ~8.6 h |
| Microwave (1000 W cooking) | 1,200 W | yes | ~2.9 h |
| Sump Pump (1/3 HP) | 800 W (1,500 W surge) | yes | ~22 h |
| Sump Pump (1/2 HP) | 1,050 W (2,150 W surge) | yes | ~16 h |
| Well Pump (1/2 HP) | 1,000 W (2,100 W surge) | yes | ~23 h |
Runtime uses each load's duty-weighted average draw against 90% of the rated capacity — conservative on purpose. Cyclic loads (fridges, pumps) run far longer than running-watts × capacity would suggest.
Outages the SOLIX F3800 Plus covers
Common questions
What can the Anker SOLIX SOLIX F3800 Plus run?
With 6,000 W of continuous output and a 12,000 W surge rating, the Anker SOLIX SOLIX F3800 Plus runs refrigerator (modern), chest freezer, cpap machine (no humidifier), cpap with heated humidifier, oxygen concentrator, space heater (1500 w), and more. Its 3,840 Wh battery sets how long: a fridge for roughly a day, a CPAP for several nights.
How long will the Anker SOLIX SOLIX F3800 Plus run a refrigerator?
A modern refrigerator averages about 53 W (it cycles ~35% of the time), so the Anker SOLIX SOLIX F3800 Plus's 3,840 Wh runs one for roughly 66 h before recharging.
Specs: Manufacturer published specifications (approximate; confirm on the current product page) (compiled 2026-08-10). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.