The SR100 digital delivers as link between solar panels and battery as much as possible of the valuable solar energy into the battery and controls automatically the charging current if there is to much solar capacity and a full battery (overcharge protection). While power is needed an immediate recharge for a preferably good state of charge of the battery is provided and during the night a back discharge is prevented. The integrated temperature compensation serves a careful, optimal full charge (acid gel), the own consumption of the regulator is very low. Two LEDs show informative with different brightness the actual operating state for "charging" and "full". Technical data: Solar module capacity: max. 100 Wp Solar module power: max. 6.4 A Solar module voltage: max. 26 V Charging current batt. I: max 6,5 A Type of battery adjustable (acid, gel), overcharge protection, reverse current lock (night operation) 1 charge output temperature range: -20 up to +45°C