Translations:Charge controller/68/en

A PWM charge controller measures the voltage of the battery bank and the temperature (ambient or at the battery bank) to estimate the state of charge of the battery and regulate charging. This type of charge controller can only limit the amount of current that is supplied to the energy storage system. It does not have the ability to vary the voltage of the PV source to get the maximum amount of production like a maximum power point tracking charge controllers. The charge controller and PV source must operate at the voltage of the energy storage system. This means that the PV source may be capable of operating at a higher voltage and supplying more power, but this energy will be lost as this type of charge controller does not offer this functionality.