OptiMate Solar DUO TM522-D Pulse Charge Controller : OFF-GRID series 12V lead-acid & lithium Solar Battery Charger & Maintainer (10W-60W)

WORKS ON PANELS RATED FOR 12V BATTERY CHARGING - A panel rated for 12V should supply voltage up to 22V, with its wattage rating calculated at 16-17V. WIDE POWER RANGE - works best with panels rated between 10W and 60W. PULSE CONVERSION TECHNOLOGY - Accumulates low current from the panel and converts it into efficient charging pulses ranging from 2A to 5A, never-mind the weather. CHARGER BY DAY, MONITOR BY NIGHT - switches between charge and monitor mode depending on incoming power. Specifications: Solar panel input 10W to 60W, Vmp = 16V-18V, Voc <= 25V. Voltage output range 4V to 14.4V.