Bluetti B500K2 Expansion Battery 5120Wh for Apex300

The Bluetti B500K2 Expansion Battery (MPN P-B500K2-EU-GY-10) is the ideal solution for flexibly expanding the capacity of your power station. With a capacity of 5,120Wh, the B500K2 provides sufficient energy for a wide range of applications and easily adapts to your energy needs. Thanks to its durable LiFePO4 technology and prismatic cells, the B500K2 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 B500K2 expansion battery

• Enormous capacity of 5,120Wh
• 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 B500K2 allows DC devices to be charged directly via USB. For AC charging, a combination with a power station is required.

Difference to B500K1 (cable & compatibility)

The difference between the B500K2 and B500K1 lies in the connection cable supplied: The K2 version comes with a short connection cable that is particularly space-saving and ideal for surface mounting. The K2 version is specifically designed for connection to the Apex300 power station and for coupling multiple expansion batteries together. The K2 version is not designed for connection to other power stations (e.g., AC500, AC300, etc.)—the K1 version with a long cable is required for this.

Compatibility

The B500K2 expansion battery is compatible with the Bluetti Apex300 power station and all other expansion batteries in the B300K/B500K series. The K2 version is ideal if you want to connect several batteries together in a space-saving manner or connect them directly to the Apex300.

Expandability and modularity

Up to 8 B500K2 expansion batteries can be combined in a modular fashion to increase the total capacity to up to 40,960Wh (maximum expansion level, see manufacturer's specifications) as needed. The expansion is simple and flexible, allowing you to customize your power supply.

Total capacity

• 1x B500K2: 5,120Wh
• With multiple expansion batteries: up to 40,960 Wh (maximum expansion level, see manufacturer's specifications)

Fast charging time

In conjunction with the Apex300, the B500K2 charges particularly quickly. 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 B500K2 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: 5,120 Wh
• Battery type: LiFePO4
• Prismatic cells for increased safety
• Life cycles: 4,000+ cycles
• Max. charging current: 60A
• Max. discharge current: 70A
• 2x expansion port: 51.2VDC 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 276 mm
• Weight: 45 kg

Scope of delivery

1x Bluetti B500K2 expansion battery
1x C90A short battery extension cable