Item Type: MPPT Solar Charge Controller Material: Aluminum Voltage: 3.2V 6.4V Maximum Charging Current: 20A Maximum LED Power: 40W (3.2V), 80W (6.4V) 1MPPT Technology: Adopt advanced maximum power point tracking technology, with tracking efficiency no less than 99% and charge conversion efficiency up to 96%. 2Wide Compatibility: Both single string and double string lithium iron phosphate or ternary lithium batteries are applicable, has a wide applications. 3Ease of Use: Solar panel charge controller could intelligently identify 3.2V and 6.4V, the operating parameters can be set by remote control. 4High Efficiency: High precise digital boost constant current control algorithm ensures high efficiency and high constant current accuracy. 5IP67 Protection: Using all aluminum housing, featuring IP67 protection, the solar charge controller is suitable for various outdoor harsh environments.To improve charging efficiency, the controller has no battery reverse polarity protection, and it is strictly prohibited to reverse connect the battery when wiring.1 x MPPT Solar Charge Controller 1 x Manual