Charge and maintain your vehicle's battery with the sun.
The 12V, 5W Battery Tender Solar Panel will charge and maintain your battery so that it's ready when you are. It's lightweight, fully-automatic, and easy to use.
Battery Tender solar panels are teh only panels available with a built-in charge controller to prevent overcharging!
I do notice a difference in starting. The battery is stronger than it was previously. The suction cups keep falling from the windshield so I reversed them and place the unit on the dashboard. Very happy with it.