This series of products are designed, equipping with controlling systems which can control the charging and the discharging of batteries. Incorporating the functions of charging and inverting the products needn’t to be equipped with solar charge controllers and at the same can kept the long time of batteries efficiently. • Functions: 1) Overload protection 2) Short circuit protection 3) Thermal protection 4) over-discharge protection 5) overcharge protection 6) Reversed polarity connection protection 7) Reverse current protection