Feature: 1. MPPT Technology: Advanced maximum power point tracking (MPPT) technology is adopted by this controller, with tracking efficiency no less than 99% and charge conversion efficiency up to 96%. 2. Parameters Settable: Single string and double string lithium iron phosphate and ternary lithium batteries are applicable, check the model for better fit 3. Remote Control Design: The new wireless remote control design of the controller allows you to modify controller parameters and read system information through handheld devices. 4. Automatic Operation: This controller can automatically adjust the load power according to the battery power, so as to maximize the working time of the battery. 5. Long Life Span: The shell of this controller is made of premium aluminum material, which is strong and sturdy, suitable for various outdoor weather conditions, you can take it with confidence Specification: Item Type: Solar Charge Controller Material: Aluminum Battery Voltage: 12V, 24V Maximum Solar Power: 260W 12V, 520W 24V Maximum Load Power: 100W (12V), 200W (24V) Maximum Operating Voltage of Solar Cell Module: 17V-72V (12V), 34V-72V (24V) Maximum Solar Working Voltage: 100V LED Voltage: 15V-60V (12V), 30V-60V (24V). Package List: 1 x Solar Charge Controller1 x Manual Note: In 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.