Feature 1 High Efficiency: Using maximum power point tracking PWM, with tracking efficiency no less than 99% and charge conversion efficiency up to 96%. 2 Charging Control: Applicable to 1S and 2S lithium iron phosphate battery and ternary polymer lithium battery, and the operating parameters can be set by remote control. 3 Good Algorithm: High accuracy digital boost constant current control algorithm ensures high efficiency and high constant current accuracy. 4 Aluminum Casing: All aluminum housing, IP67 protection grade, suitable for various outdoor harsh environments, works with high stability. 5 Easy to Install: Comes with a compact size and a light weight as well, the convenient installation can be quickly completed in minutes.Item Type: Solar Charge ControllerMaterial: AluminumVoltage: 12V 24VMaximum Charging Current: 10AMaximum LED Power: 40W 12V, 60W 24V. Package List1 x Solar Charge Controller1 x User ManualNoteIn order to improve the charging efficiency, the controller has no battery reverse polarity protection, and it is strictly prohibited to reverse connect the battery when wiring.