This item is a solar charge controller. It is made of material, portable, practical and durable. It is suitable for charging battery, ternary lithium battery and lithium iron phosphate battery. A great helper for you. Features -Color:Green -Material:Plastic and electronic element -Size:13.35X7.00X2.40cm/5.25X2.75X0.94in - solar charging DC plug, DC lamp output DC plug, easy to connect -Bidirectional tube anti-backflow circuit, high-power charging mode, ultra-low heat -Built-in overheating, overcurrent, short circuit, open circuit protection, troubleshooting, automatic controller recovery -At present, auto-focus MPPT charging, high charging efficiency, during charging, two-way focus -Charge 12V/24V lithium battery, ultra-wide charge and discharge adjustable, when the output is off, the minute is adjustable, which is more convenient Specification - Voltage: DC 12V/24V - Display: LCD screen - Overcharge protection: 14.4V/28.8V - Overcharge and float charge: 13.7V/27.4V - Charging recovery voltage: 12.6V/25.2V - Over discharge protection: 10.7V/21.4V - Over discharge recovery: 12.6V/25.2V - Dual USB output: 5V/2A (charging , etc.) - Working temperature: -35 degree centigrade-60 degree centigrade - 12V is suitable for 18V solar panels, 24V is suitable for 36V solar panels - 12.0 volt battery - 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 - 12.8V 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 - 11.1V lithium battery corresponding - 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 Package list: 3 controller