BatteryMINDer SCC-515-5 12 Volt 5-Watt Panel Solar Battery Charger/Controller/Desulfator - Designed for Cars, Trucks, Motorcycles, ATV, Boat, RV, etc. SOLAR POWERED - SCC-515-5 12V Controller w/5-Watt panel solar battery charger optimizes all solar panels charge rates. It actively monitors your battery's voltage any time the sun is up. Includes an 18"L x 12"W 5-Watt amorphous silicon solar panel. Controller will handle maximum 30 Watts of power EXTENDED BATTERY LIFE - Automatic full time desulfator reverses sulfation (a buildup of lead sulfate crystals) the primary cause of early battery failure by using a patented range of high frequencies to safely remove sulfation and recondition weak batteries. Sulfated batteries once considered beyond recovery can now be brought back to long-term useful condition. Extending battery life up to four times when compared to new batteries not being properly maintained. TWO BATTERIES AT A TIME - Maintains up to two batteries at a time. Works on all sizes, types and brands of 12V lead-acid batteries including, but not limited to: flooded (filler cap/maintenance-free/VRLA/SLA), gel, AGM (Optima/Odyssey etc.), starter, deep cycle and hybrid. BATTERY CONDITION INDICATOR - Instantly checks the amount of charge in your Battery. Easy push button operation.