This is new solar controller, it can fully meet your home photovoltaic system(including home lighting system )requirements. It can recognition 12V and 24V lead acid battery, lithium battery, gel battery automatically. Features: Dual USB Port: USB output: 5V/3A max, dual USB supply power to two mobile phones, tablet PCs, and other devices. Solar Battery: Solar charge controller just works with lead-acid batteries: OPEN, AGM, GEL, not for nickel hydride, lithium, or other batteries. Multiple conservation: Build-in short-circuit conservation, open-circuit conservation, overcurrent conservation, overload conservation, safety for using. Widely Use: Suitable for home, industrial, commercial, workshop etc. Easy to Install and Operate: Clearly indicate the status and data, can be conveniently switched modes and parameter configuration. LCD Display: Large LCD display, easy to read the data. Function: Help to prolong the battery life cycle and keep the load work well. Application: Suitable for small solar energy system. Warm Tips: 1. Please keep it in cool and well ventilated place to maintain good heat dissipation. 2. Ensure your battery has enough voltage for the controller to recognize the battery before first installation. 3. The working temperature of this controller is -35C to 60C, please keep the controller stay in cool and well-ventilated place to maintain good heat dissipation during the summer day. Notes: 1. Please allowed 1-3mm differences due to manual measurement, thank you! 2. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item. Specifications: Current: 40A / 50A / 60A (Optional) Material: ABS+Aluminum Alloy Color: White+Green Rated Charging Current: 10A/20A/30A/40A/50A/60A Rated Discharge Current: 10A/20A/30A/40A/50A/60A Voltage: 12V/24V automatic identification USB Output: 5V 3A Standby Current: