The SOLAR CONTROLLER is suitable for use with lead acid batteries (vented, GEL, or AGM type) as well as some lithium iron phosphate (LiFePO4) batteries that are supplied with a Battery Management System (BMS). No other chemistries (includion Lithium-Ion) are compatible with this controller.

Lithium batteries typically have maximum allowed charge currents. These maximums typically decrease in cold temperatures. SOLAR CONTROLLER does not limit current for these restrictions, and system design of the solar panel must account for this.

Be sure to follow all battery manufacturer safety instructions

The SOLAR CONTROLLER Maximum 37.5A rating is based on a 30-amp total maximum short circuit current rating (Isc) from the solar modules nameplate ratings. The National Electric Code specifies the PV equipment/system rating to be 125% of the maximum Isc from the PV module ratings (1.25 times 30 = 37.5A). E.G. Three modules in parallel with an Isc of 7 amps each equal a total Isc input of 21 amps. When selecting PV modules for use with the SOLAR CONTROLLER do not exceed a total nameplate Isc current of 30A. Solar modules list the Isc amps on their nameplate label.

The controller will not work unless there is a battery connected to the Battery 1 terminals.

WARNING: When the photovoltaic (solar) panel is exposed to light, it supplies a dc voltage to this equipment.