Features 1、Used for 13 series 35A 48V li-ion batterys. 2、Protects batterys and prolong the service life of batterys. 3、Equilibrium function, keeps batterys in balance and long service life. 4、Overcharge conservation, over discharge conservation, over current conservation, short circuit conservation, temperature conservation. Specification Features: Used for 13 series 35A 48V li-ion batterys. Protects batterys and prolong the service life of batterys. Equilibrium function, keeps batterys in balance and long service life. Overcharge conservation, over discharge conservation, over current conservation, short circuit conservation, temperature conservation. Specifications: Cable length: 300mm / 11.81in Board size: 69 * 52 * 9mm / 2.72 * 2.05 * 0.35in Package size: 140 * 98 * 10mm / 5.51 * 3.86 * 0.39in Package weight: 66g / 2.33ounces Package List: 1 * Batterys Protections Board with Wire Package List 1 * Batterys Protections Board with Wire