Features 1、Stainless steel material for high-power heat dissipation, equipped with high-power fans 2、Effectively release the electric heat generated by the balanced repair, andmeet the large‑capacity battery pack for long‑term balanced repair use 3、Satisfy the selection of the cable of different sizes of battery packs, so that one machine can support the balanced repair of multiple sizes of battery packs 4、The product is easy to understand at a glance, can be used as electric vehicle battery balance board 5、Voltage equalizer has a wide range of applications, suitable for 3-20 strings of batteries Specification Item Type: Voltage Equalizer Model: BAL-520 ternary lithium battery pack equalizer Product Size(LxWxH): Approx. 123 x 117 x 44mm / 4.8 x 4.6 x 1.7in Scope of Application: Suitable for 3-20 strings of batteries Package List 1 x Equalizer 1 x USB Power Cord 1 x User Manual