Bluetti B300K Expansion Battery
Best scalable power solution for off-grid enthusiasts and home backup needs.
This modular powerhouse turns your existing setup into a serious off-grid energy hub without the bulk of a dedicated generator. It sacrifices standalone versatility for raw, scalable capacity, making it the smartest way to extend your runtime during extended outages or long-term camping trips.
$870.00
at
FactoryPure
Who it's for
- Bluetti users wanting simple, plug-and-play system expansion
- Off-grid enthusiasts needing substantial, scalable energy storage
- Long-term owners prioritizing battery longevity and safety
Who should skip it
- Travelers requiring lightweight, highly portable power solutions
- Budget-conscious buyers seeking affordable backup power options
- Shoppers looking for a standalone, all-in-one power source
Performance breakdown
Energy Density
High-capacity LiFePO₄ chemistry packs significant power into a manageable, compact footprint.
Charging Speed
Reaching 80% in 45 minutes sets a blistering pace for rapid recovery.
Build Durability
Rugged aluminum casing ensures long-term protection for demanding off-grid environments.
System Longevity
Over 4,000 life cycles offer years of reliable, daily power performance.
Ecosystem Compatibility
Seamless integration across multiple Bluetti power stations maximizes modular utility.
Operational Safety
Automotive-grade battery chemistry provides industry-leading stability and thermal management.
Key Specs
Battery Capacity
2,764.8Wh
Nominal Voltage
51.2V
Capacity
54Ah
Battery Type
LiFePO₄ (Lithium Iron Phosphate)
Cycle Life
4,000+ cycles at 80% capacity retention
Weight
29.5kg
Dimensions
52.5 × 32.7 × 20.9cm
Max Charging Current
60A
Max Discharging Current
70A
Compatibility
AC200L, AC200MAX, AC300, AC500 power stations
Know before you buy
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