The BLUETTI B300K is a 2,764.8Wh LiFePO4 expansion battery designed to add capacity to compatible BLUETTI power stations, including the Apex 300 (up to 58kWh total when stacked), AC200L, AC200MAX, AC300, and AC500 (with an additional cable, sold separately). It uses automotive-grade battery cells with AI-BMS management, a rugged aluminum casing, and active cooling, and includes a built-in USB-A port so it can charge small devices even as a standalone unit. Rated for 6,000+ cycles to 80% capacity, it's built for long-term daily use or extended backup during outages.
Key Features
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2,764.8Wh Capacity, 6,000+ Life Cycles: Built for daily power needs or extended outage backup.
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Automotive-Grade LiFePO4 Battery: Extended lifespan and enhanced safety.
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Seamless Compatibility: Integrates with Apex 300, AC200L, AC200MAX, AC300, and AC500 (AC500 requires a separate P090D to P150D cable).
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Maximize Your Power: Expand up to 58kWh total when connected with Apex 300.
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Fast Charging: Paired with AC300 or AC500, charges to 80% in about 45 minutes.
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Standalone Power Source: Built-in USB-A port for charging small devices directly.
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3+1 Year Warranty: Extendable by registering the product.
Specifications
| Battery Capacity |
2,764.8Wh (51.2V, 54Ah) |
| Battery Type |
LiFePO4 (Lithium Iron Phosphate), automotive-grade |
| Cycle Life |
6,000+ cycles to 80% capacity |
| USB-A Port |
12W max, 5V/2.4A |
| Weight |
29.5 kg (65.04 lbs) |
| Dimensions (L x W x H) |
52.5 x 32.7 x 20.9 cm (20.67 x 12.87 x 8.23 in) |
| Warranty |
3+1 years (extendable with registration) |
| Compatible Power Stations |
Apex 300, AC200L, AC200MAX, AC300, AC500* |
*AC500 compatibility requires a separate P090D to P150D cable, sold separately.
In the Box
- B300K Expansion Battery x 1
- Battery Connection Cable (CA90) x 1
- User Manual x 1
