DescriptionHigh-capacity, next-gen expansion battery with broad compatibility across the BLUETTI ecosystem.The B300K packs 2,764.8Wh in a compact, aluminium-cased design with advanced AI-BMS technology Wellbots. It’s lighter and more energy-dense than the older B300, with a longer lifespan.Key Specs:Capacity: 2,764.8Wh (51.2V, 54Ah) LiFePO4Life Cycles: 4,000 to 80% capacity Amazon— 15% longer lifespan than the B300Weight: 29.5 kg (65.04 lbs) WellbotsDimensions: 20.67 × 12.87 × 8.23 in (525 × 327 × 209 mm) WellbotsWarranty: 3 1 years (with product registration)Compatibility: Works with AC200L, AC200MAX, AC300, AC500, and AC200P L. AmazonCan be mixed with B300 and B300S models. The AC500 supports up to 6 B300K units, scaling the system to a massive 33,177Wh.Standalone Output: Built-in 12W USB-A port Amazonfor emergency device charging without a host power station.Fast Charging: Reaches 80% in just 45 minutes when paired with AC300 or AC500. WellbotsCharged through the host power station via AC, solar, car, or generator — no separate charging port on the B300K itself.Key Highlights: Square LiFePO4 cells with AI-BMS technology, robust aluminium casing, wireless internal design for minimised failure risk Off Grid Stores, efficient cooling fan. Lighter than B300 (29.5 kg vs 36.1 kg) with 4,000 cycles vs 3,500 .Operating Temps: Discharge −20°C to 40°C; Charging 0°C to 40°C.
