A solar charger collects energy from your solar panels and stores it in your batteries. With the latest and fastest technology, SmartSolar maximizes the energy collection and forwards it in an intelligent way to fully charge the battery in the shortest possible time. SmartSolar maintains battery health and extends life. The SmartSolar charge controller even charges a severely discharged battery. It can operate with a battery voltage as low as 0 V provided the cells have not been permanently sulfated or otherwise damaged.
In the name of the SmartSolar models, e.g. MPPT 75/50, the first number stands for the solar cell's maximum no-load voltage. The second number, 50, is the maximum charging current.