The BLUETTI B300K expansion battery offers a capacity of 2,764.8Wh and is the ideal solution for meeting energy needs at home or outdoors. With high-durability LiFePO₄ technology, it ensures over 4,000 charging cycles, providing reliability and safety for years. It is fully compatible with APEX300 power stations, allowing the system to scale according to requirements. It also features a USB-A port for direct charging of devices.