Anker SOLIX F3800
3840 Wh · 6000 W output · LiFePO4 · $3999
✅ Specs verified against the manufacturer's official listing — source · Last checked
Our verdict
This is where portable power stops being portable and starts replacing a standby generator. The 240V split-phase output is the headline feature.
Best for: Whole-home backup where you need 240V loads and can't run a gas generator.
What we like
- 6000W output and 9000W surge handle well pumps, HVAC and dryers
- 120V/240V dual voltage — can hard-wire into a transfer switch
- Expandable to nearly 27kWh
Where it falls short
- 132 lb — this is a wheeled appliance, not something you carry
- $3,999 puts it against real standby generators
Full specifications
| Capacity | 3840 Wh |
|---|---|
| Continuous output | 6000 W |
| Surge output | 9000 W |
| Battery chemistry | LiFePO4 |
| Rated cycles | 4,000 |
| Weight | 132.3 lb |
| Max solar input | 2400 W |
| Recharge (AC) | 1h 30m |
| Expandable | Yes |
| Warranty | 5 years |
What can the Anker SOLIX F3800 run?
| Appliance | Can start it? | Est. runtime |
|---|---|---|
| Refrigerator | ✅ Yes | 54.4 hrs |
| Mini fridge | ✅ Yes | 103.6 hrs |
| Chest freezer | ✅ Yes | 40.8 hrs |
| CPAP machine | ✅ Yes | 81.6 hrs |
| Sump pump | ✅ Yes | 4.1 hrs |
| Well pump (1/2 HP) | ✅ Yes | 3.3 hrs |
| Space heater | ✅ Yes | 2.2 hrs |
| Window AC (8k BTU) | ✅ Yes | 6.7 hrs |
| Microwave | ✅ Yes | 3.3 hrs |
| Coffee maker | ✅ Yes | 3.6 hrs |
| TV (55" LED) | ✅ Yes | 32.6 hrs |
| Laptop | ✅ Yes | 50.2 hrs |
| Phone charger | ✅ Yes | 163.2 hrs |
| CPAP + humidifier | ✅ Yes | 36.3 hrs |
| Fridge plus essentials | ✅ Yes | 32.6 hrs |
| 12V RV fridge | ✅ Yes | 181.3 hrs |
| Starlink | ✅ Yes | 54.4 hrs |
| Electric blanket | ✅ Yes | 108.8 hrs |
Runtime = (capacity × 0.85 inverter efficiency) ÷ appliance watts. Refrigerator assumes a 40% compressor duty cycle. Real-world results vary.