Goal Zero 44001 Guardian Silver/Black 12V Solar Recharging Kit with Boulder 15 Solar Recharging Kit Trickle, recharge and maintain 12 Volt batteries Small and easy to use Hook it up and walk away 10 Ampere charge controller with 15 Watt solar panel Includes Guardian 12 Volt charge controller, alligator clips, and Goal Zero's Boulder 15 solar panel