-Advanced maximum tracking technology power point (MPPT/PWM), performance is not less than 99.5%. High-quality components improve system performance, and the maximum conversion efficiency is 98%. -Large LCD display, charging and discharging current display, cumulative power and discharge generation, temperature display, light control + delay control; Adjustable charging and discharging parameters, With power off memory and other functions. -Double output USB, the maximum current is 2.5A. Equipped with we all necessary security devices, the system control parameters are adjustable, easy to configure and operate. Built-in overheating, overcurrent, short circuit, open circuit protection, fault elimination, automatic controller recovery. Two-way MOS pipe anti-reverse flow circuit, high power charging mode, very low heat. -Built-in short circuit protection, open protection circuit, reverse connection protection, overload protection. Reverse current protection, low calorific value, with self-recovery function, will not damage the controller. -Display real-time temperature, charging current and discharge current. Current MPPT autofocus charging, high charging efficiency, charging process does not stop detection, two-way focus tracking. Specifications: Name: LCD Screen Solar Controller Voltage: DC 12V / 24V Display: LCD screen Own consumption: <10MA Overcharge protection: 14.4V / 28.8V Float charge overcharge: 13.7V / 27.4V Charging Recovery Voltage: 12.6V / 25.2V Over discharge of protection: 10.7V / 21.4V Over recovery discharge: 12.6V/25.2V Dual USB output: 5V/2A (mobile phone charging, iPad, etc. ) Operating temperature: -35 ℃ -60 ℃ 12V fits 18V solar panel, 24V fits 36V solar panel Suitable lead-acid battery 12.0 volts The float voltage is set to: 13.6 The recovery discharge voltage is set to: 12.6 The discharge cut-off voltage is set to: 10.7 Suitable 12.8 volt lithium iron phosphate battery The float voltage is set to: 14.6 The recovery discharge voltage is set to: 13.6 The discharge cut-off voltage is set to: 11.0 Suitable 11.1V Lithium Battery The float voltage is set to: 12.6 The recovery discharge voltage is set to: 11.6 The discharge cut-off voltage is set to: 9.6 The minute is adjustable when the output is off, which is more convenient (it does not ma adjustment when the market is only available). Description of PV system power: 1X solar panels battery charging controller 1X instruction manual 1. The charging controller is suitable for lead batteries: open, AGM, gel, nickel hydride, lithium, lions or other batteries. 2. This controller can only use photovoltaic panels as charging power. Do not use direct current ani other power as charging power. 3. LCD display ma error 0.2 V- 0.3 V, ale this is normal 4. Old batteries can degrade after multiple cycles