This solar panel will save you the headache of finding a dead battery in your RV. Keep it attached to your battery in the off season to maintain battery health and keep it fully charged. Works with both lithium and lead acid batteries. Great Prices for the best portable solar panel from OptiMate. OptiMate Solar Duo Portable Solar Panel with Controller - 40 Watt Solar Panel part number MA56JR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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