Charge and Maintain: This charging system charges and maintains any 12V lead-acid battery (AGM, gel, and flooded cell) and solves battery problems for anyone using two batteries connected in parallel.
Patented Technology and Unique Design: Pulse Technology reverses sulfate crystal buildup on the battery plates, tripling battery life. SolarPulse's higher quality crystalline silicon cells pack more power per square inch than competitive products. This unique solar panel is made of highly efficient proven crystalline silicon photo-voltaic cells, encapsulated with a clear polyurethane plastic coating, and mounted on a laminated aluminum substrate back plate that is less than 1/4" thick.
Durable and Powerful Performance: Virtually indestructible, the SP-7 charging system provides a full seven watts of power in a compact, durable 10.25''L x 8.85''W x 0.25''H solar panel. The SP-7 is a higher watt version of the SP-5 5W Battery Solar Charger Maintainers. 
PRODUCT DETAILS
Works on ANY 12V lead-acid battery including AGM, gel and flooded cell
Maintains batteries at a full state of charge
Dramatically reduces jumpstarts
Commercial grade solar panel is virtually indestructible
Patented Pulse Technology extends battery life up to 3 times
Supports sustainability programs
Reverse polarity protected
Ten-Year Limited Warranty