SOLSUM 8.8 F Solar Charge Controller with Led 12-24 VDC- 8 Amps With a power range of up to 10 A at automatically recognized 12 V or 24 V it fits to a system sizes of maximum 240 W. The circuit board is completely electronically protected and with the LED user interface it is easy to check the battery state of charge at any time. Large terminals guarantee a simple connection of solar panels, battery and load. The Steca Solsum F works on PWM as a low loss series controller. Series controller Voltage regulation