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 -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 25mmRated voltage: 12V-24VMaximum Solar Panel Voltage: 12V Battery: Max 23V; 24V Battery: Max 46VApplication: solar system controllerCurrent: 10AUSB output: 2 ways, Maximum: 5V/2 5AStandby current: less than 10mAWorking temp: -35~+60 Floating charge voltage: 13 7V(adjustable)Discharge up to voltage: 10 7V(adjustable)Discharge recovery voltage: 12 6V(adjustable)Colour: white + greenMaterial: ABSPackage Contents:1 * Solar charge controllerOnly 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