VDC Electronics Solar BatteryMINDer Charger, Maintainer, Desulphator 12 Volt - 5 Watt $99.99
Optimizes all solar panels charge rates. Prevents over/under charging. Full time desulphation pulses safely extends life and performance of all batteries.
Solar Charge Controller 7 Amp $29.99
Protects batteries from overcharging and discharging, plus regulates the voltage when using 12V solar panels to charge batteries. For use with up to 105 Watts of solar power (one unit is good for up to 7 of Item# 339972). Must be used with all solar panels 10 Watts and higher. Weatherproof, so it can be used with all types of models and solar chargers, even wind generators.