Bluetti B300K Expansion Battery (2 764.8 Wh)
The B300K is a modular expansion battery that boosts the capacity of Bluetti power stations such as the AC200L, AC200MAX, AC300 and AC500. Its 2 764.8 Wh LiFePO₄ pack delivers over 4 000 life cycles, providing reliable backup during outages. When paired with the AC500, it allows systems to reach 16 588 Wh for off‑grid or home backup needs. Automotive‑grade LiFePO₄ cells offer enhanced safety, and the battery features a USB‑A port for standalone device charging. A 3+1‑year warranty underscores long‑term reliability.
Key specifications
| Spec | Value |
|---|---|
| Model | B300K |
| Battery capacity | 2 764.8 Wh (51.2 V, 54 Ah), expandable to 16 588 Wh with AC500 |
| Battery type | LiFePO₄ (Lithium Iron Phosphate) |
| Life cycles | 4 000+ cycles to 80 % original capacity |
| Compatibility | AC200L, AC200MAX, AC300, AC500 and future modules |
| USB‑A output | 12 W max (5 V / 2.4 A) |
| Built‑in port | USB‑A for charging small devices |
| Net weight | Approx. 29.5 kg (65.04 lbs) |
| Dimensions (L × W × H) | 525 × 327 × 209 mm (20.67 × 12.87 × 8.23 in) |
| Charging temperature | 0 °C to 40 °C (32 °F to 104 °F) |
| Discharging temperature | −20 °C to 40 °C (−4 °F to 104 °F) |
| Storage temperature | Up to 1 month: −20 °C to 40 °C (−4 °F to 104 °F); up to 6 months: −20 °C to 25 °C (−4 °F to 77 °F) |
| Working humidity | 5 % to 95 % RH |
| Charging current | 60 A max (may decrease outside specified temperatures) |
| Discharging current | 70 A max |
| Expansion ports | 2 × expansion port (58.4 V DC, 90 A max) |
| Warranty | 3 + 1 years |
In The Box:
Maximise your Bluetti setup. Add the B300K expansion battery to your Energian basket and unlock bigger capacity with a robust 3+1‑year warranty.