The Bluetti B210 Expansion Battery, with an impressive capacity of 2150Wh, allows you to store solar energy in conjunction with other Bluetti balcony system products. Storing generated energy in this battery offers the opportunity to become more self-sufficient, reducing dependence on the regular power grid. The attention to detail, such as the durable finish with a sturdy, splash-proof casing (IP65) that provides perfect protection for the USB (C) ports, is characteristic of the Bluetti B210. With this battery in a balcony system, you enjoy the flexibility to provide power to your devices at any time, regardless of the availability of sunlight. The Bluetti B210 Expansion Battery can also be combined with a Bluetti AC240P or Bluetti AC200P L Power Station, allowing you to increase the total battery capacity.