... Controll or Light Control; ISO 9001, CE; Competitive Price; PWM Solar Charge Controller Auto Switch 12V/24V 20A Auto Light Control For ... to control the charging to increase the charge rate.7. The state of solar battery, storage battery and load is showed ... .2v;×2/24V;Temperature compensation-5mv/°C/cell (Boost charge, Direct charge, Float charge, charge return voltage); Lower voltage indicate 12.0V; ×2 ...