The PulseTech 10-Watt Solar Pulse Solar Charger Maintainer, No. SP-10, charges, maintains and desulfates all 12V lead-acid batteries including VRLA, AGM, gel and flooded cell without danger of overcharging or overheating. It’s ideal for charging three to four 12V lead-acid batteries connected in parallel, helping to ensure that batteries remain in peak condition. The SP-10 incorporates PulseTech’s patented Pulse Technology which removes sulfates from the battery plates and returns the battery to a like-new state capable of holding a full charge and extending battery life up to three times, the company says. It’s protected with a clear polyurethane plastic coating that makes it virtually indestructible and impervious to weather, aging and damage from everyday knocks and bumps. Weatherproof and with multiple mounting options, the panel dimensions are 12.41” long by 9.85” wide by 0.2” high. When mounted on a vehicle or equipment, the SP-10 is an entirely automatic battery conditioning and charge/maintenance system. The SP-10 comes with a five-year limited warranty.