Solar controllers are built-in electronic fused that do not require replacements. Adjustable controlling parameter of the system. The controller has a low failure rate and will last a long time and protected with moisture-tight coating, minimizing damage from humidity and from nesting insects. Easy to set up and operate. Suitable for home, industrial, commercial, boat, car etc. Working Temperature: -35 to 60 Degree Battery Specification: Voltage: 12V/24V auto Charge Current:10A Discharge Current: 10A Overloading & Short-circuit protection. Reverse discharging & reverse-polarity protection. Working Temperature: -35°C to +60°C Self consume: ≤10mA Float Charge: 13V(default,adjustable) Discharge stop:10.7V(default,adjustable) Discharge reconnect:12.6V(default,adjustable) Size:133 x 70 x 32mm Package included: 1 x 10A Solar Charge Controller