10A 15A 20A Waterproof Land Star Solar Controller Regulators MP PT Solar Charge Co...Page 2 of 11 *Waterproof design, suitable for the extreme environment with corrosion, dust, water etc. *Gel, Sealed and Flooded battery type option. -Adopt temperature compensation, correct the charging and discharging parameters automatically and improve the battery lifetime. ‘Electronic protection: Overheating, over charging, over discharging, overload, and short circuit.