Charge Controllers

All the listed Power Tracker™ charge controllers with MPPT can charge control a battery of lower voltage.

Many of these models can also accept battery or multiple input sources.

Charging a Lower Voltage Battery from a Higher Voltage Solar Panel

Special models are available to operate from non-typical PV nominal voltages and charge batteries of different nominal voltages. For example, 72 V nominal panels charging a 36 V battery or any combination of panel and battery so long as the battery voltage is less than the panel voltage. This will be useful where the panels must be a long distance from the battery, allowing wiring with a smaller wire size as the current is reduced. The wire savings alone can easily pay for the controller.