Specification Material: ABS Display: LCD screen Batt Voltage: 12v/24v auto Rated Current: 10A, 20A, 30A, 40A, 50A, 60A Self-consumption: 10MA Working temperature: -35 -60 Max solar input: 12v battery, the highest 23v; 24v battery when the highest 46v Float charge: 13.7v(defaul, adjustable) Discharge stop: 10.7v(defaul, adjustable) Discharge reconnect: 12.6v(defaul, adjustable) Charge reconnect: 13v Voltage of open light: solar panel 8v(Light lights delay) Voltage of close light: Solar panel 8v(Light off delay) USB output: 2 way USB output, 5V/2.5A(MAX) Size: (L)X(W)X(H)133.5X70X35mm /5.26''X2.76''X1.38"(appr.) Features Build-in industrial micro controller Fully 3-stage PWM charge management Big LCD display, all adjustable parameter Dual mosfet reverse current protection, low heat production Dual USB output, the maximum current of 2.5A, to support Apple's mobile phone charging Build-in short-circuit protection, open-circuit protection, reverse protection, over-load protection Suitable for solar green light, solar light boxes advertising board, solar insecticidal lights, housing solar power generation system, marine solar power generation system, outdoor survival solar power generation system