Brand new and high quality. This PWM Solar Charge Controller is suitable for 3 types of batteries, including lead-acid batteries(12V/24V auto identification), Lithium-ion batteries( 3 strings of 11.1V Lithium batteries) and Lithium iron phosphate batteries( 4 strings of 12.8V). Fully 3-stage PWM charge management. Build-in industrial micro-controller and dual USB output, the maximum current is 2.5A, to support Phone charging. One-key setting,LCD digital display,auto memory function. Build-in short-circuit protections,open-circuit protections,reverse protections,over-load protections. Dual mosfet Reverse current protections ,low heat productions. Size: about 133.5mm x 70mm x 25mm Rated voltage: 12V-24V Maximum Solar Panel Voltage: 12V Battery: Max 23V; 24V Battery: Max 46V Application: solar system controller Current: 10A USB output: 2 ways, Maximum: 5V/2.5A Standby current: less than 10mA Working temp: -35~+60 Floating charge voltage: 13.7V(adjustable) Discharge up to voltage: 10.7V(adjustable) Discharge recovery voltage: 12.6V(adjustable) Colour: white + green Material: ABS Package Contents: 1 * Solar charge controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.