Bluetti B300K2 Expansion Battery 2764Wh for AC200 AC300 AC500

The Bluetti B300K2 Expansion Battery (MPN P-B300K2-EU-GY-BL-010) is the ideal solution for flexibly expanding your power supply. With a capacity of 2,764.8Wh, the B300K2 provides sufficient power for a wide range of applications and easily adapts to your energy needs. Thanks to its durable LiFePO4 technology and prismatic cells, the B300K2 delivers reliable performance in any situation. The integrated AI BMS technology ensures optimal protection and high efficiency. In addition, pass-through charging support allows simultaneous charging and discharging, so you can access a stable power source at any time.

Highlights of the B300K2 expansion battery

• Enormous capacity of 2,764.8Wh
• Modular and expandable
• Extended service life with automotive-grade LiFePO4 battery
• Wall mounting possible

Integrated USB-A port

Thanks to the integrated USB-A port, the B300K2 allows DC devices to be charged directly via USB. For AC charging, a combination with a power station is required.

Compatibility

The B300K2 expansion battery is specifically compatible with the Apex300 and other expansion batteries. The included short connection cable (K2) is particularly space-saving and designed for surface mounting. A direct connection to AC200MAX, AC200PL, AC200L, or AC300 is not possible with the B300K2. A separately available P090D to P150D cable is required for connection to the AC500 .

Expandability and modularity

Up to 6 B300K2 expansion batteries can be combined in a modular fashion to significantly increase the total capacity as needed. Expansion is simple and flexible, allowing you to customize your power supply.

Total capacity

Apex300: Capacity expandable depending on combination with additional batteries

Fast charging time

When used with the Apex300, the B300K2 charges to 80% in just 45 minutes. This fast charging time is particularly advantageous when you need to complete important work, activities, or emergencies without major interruptions.

Installation

The battery is easy to install, both for use at home and in motorhomes, and its efficient thermal management ensures smooth operation even during intensive use thanks to heat dissipation.

Efficient heat management

Efficient heat management protects the battery from overheating and contributes to its longevity. Even with intensive use, operation remains safe and reliable.

Discharge

The B300K2 has an energy reserve that prevents over-discharging. This extends the battery's service life and ensures long-term performance.

What is AI-BMS?

The integrated AI-BMS (battery management system) monitors the battery in real time and reliably protects it from overcharging, overheating, and other risks—for maximum safety and a particularly long service life.

Advantages of prismatic cells

Prismatic cells offer particularly high safety and stability in operation, which makes the battery more resistant to external influences and further increases its service life.

Technical data

• Battery capacity: 2,764.8Wh
• Battery type: LiFePO4
• Prismatic cells for increased safety
• Life cycles: 4000+ cycles
• Max. charging current: 60A
• Max. discharge current: 70A
• 2x expansion port: 58.4VDC max., 90A max.
• USB-A: 12W max., 5V / 2.4A
• Charging temperature: 0°C - +40°C
• Discharge temperature: -20°C to +40°C
• Relative humidity: 5% to 95%
• Dimensions: 525 x 327 x 209 mm
• Weight: 29.5 kg

Scope of delivery

1x Bluetti B300K2 expansion battery
1x CA90 short battery extension cable