BLUETTI runtime estimate
Will the BLUETTI AC500 + B300S run a CPAP?
Estimate: about 6.2 nights with heated humidifier on, 10.9 nights with humidifier off, or 12.6 nights using a compatible CPAP DC converter cable.
A CPAP is a medical device. These are runtime estimates, not medical advice or a medical-safety guarantee. Test your exact setup at home before relying on it.
| Rated capacity | 3072 Wh |
|---|---|
| Usable estimate | 3072 Wh x 0.85 = 2611 Wh on AC inverter |
| AC inverter | 5000 W continuous fixture value |
| Chemistry | LiFePO4 |
| Weight | 167.5 lb |
| MSRP | $4,499, fixture checked 2026-06-12 |
| Source | https://www.bluettipower.com/products/ac500-b300s |
Line-by-line math
- CPAP humidifier on: 3072 Wh x 0.85 = 2611 Wh / 53 W = 49.3 h = 6.2 nights.
- CPAP humidifier off: 3072 Wh x 0.85 = 2611 Wh / 30 W = 87.0 h = 10.9 nights.
- Compatible DC cable: 3072 Wh x 0.92 = 2826 Wh / 28 W = 100.9 h = 12.6 nights.
- Full-size refrigerator: 3072 Wh x 0.85 = 2611 Wh / 150 W = 17.4 h.
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Try this model with your loads
Pick loads, hours, and whether CPAP uses an AC inverter or a compatible DC converter cable.
A CPAP is a medical device. These are runtime estimates, not medical advice or a medical-safety guarantee. Test your exact setup at home before relying on it.