BatteryMINDer SCC-515-15 12 Volt 15-Watt Panel Solar Battery Charger/Controller/Desulfator - Designed for Cars, Trucks, Motorcycles, ATV, Boat, RV, etc. SOLAR POWERED - SCC-515-15 12V Controller w/15-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 a 36"L x 12"W 15-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. FOUR BATTERIES AT A TIME - Maintains up to four 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. INCLUDES BATTERY CONDITION INDICATOR - instantly checks the amount of charge in your Battery. Easy push button operation. Internal program adjusts its output several times a second based on this reading to quickly and correctly charge your battery. High frequency pulse desulfation. Short circuit, spark and polarity protection. Solar Controller that works withall  sizes, types and brands of 12V lead-acid batteries starter, deep cycle and hybrid. 36&#034;L x 12&#034;W 15 Watt amorphous silicon solar panel Battery Condition Indicator 20&#039; DC solar panel connection, 4&#039; DC cord with quick connector 2 ft. insulated battery clip cord set with fused Quick-connect Plug Ambient Temperature Sensor (installed) Mounting hardware