Bluetti AC300 + B300K: runtime & specs
2,764.8 Wh · 3,000 W continuous AC · 2,400 W max solar input · LFP (LiFePO4). Specs below are the manufacturer's published figures — continuous and surge watts are separate numbers here, because they are separate numbers in reality.
Manufacturer specifications
| Capacity | 2,764.8 Wh |
|---|---|
| Maximum capacity with expansion | 11,059 Wh |
| AC output (continuous) | 3,000 W |
| AC output (surge) | 6,000 W |
| Boost mode | — |
| Maximum solar input | 2,400 W |
| Solar input voltage range | Not published in the source retrieved |
| Battery chemistry | LFP (LiFePO4) |
| Cycle life | 4,000 cycles to 80% capacity |
| AC charging input (max) | 3,000 W |
| Weight | Not published in the source retrieved |
Source: manufacturer product page · pulled 2026-10-19. Expansion: AC300 inverter module + 1 x B300K battery included; supports up to 4 x B300K. If a row says "not published", the manufacturer doesn't publish that figure in the source we retrieved — we leave it blank rather than guess.
What it runs, and for how long
Estimates use our published formula — capacity × 0.85 ÷ load, duty cycle applied to cycling loads, and a start check against the surge rating (methodology). Loads that fail the start check are marked, not given a fake runtime.
| Load | Estimated runtime |
|---|
Try your own load
Bluetti AC300 + B300K questions
How long will the Bluetti AC300 + B300K run a refrigerator?
About 8.4 hours for a typical fridge at a 40% compressor duty cycle (700 W nameplate draw while running), using our standard formula: 2,764.8 Wh × 0.85 ÷ 280 W average. That is the duty-cycled figure; the same station runs the fridge for about 3.4 hours if the compressor never cycles off.
How long will it run a CPAP?
About 58.8 hours at 40 W — a typical CPAP without a heated humidifier — or roughly 7.3 nights at 8 hours a night. With a heated humidifier (~90 W) expect about 26.1 hours. That's device runtime math only; see the CPAP calculator for your device's actual wattage.
How long does it take to recharge from solar?
With 400 W of panels, the Bluetti AC300 + B300K needs about 8.9 hours of full sun for a full charge after the 0.78 real-world derate. Try other panel sizes in the solar charging calculator.
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