Features: 1. brand new and high quality. 2. This product has small package shape, less peripheral components and it is easy to use. 3. With trickle, constant current, over charging and floating charging mode, it is for ideal for charging for 12V lead-acid batteries. 4. When powered by solar panels, the internal circuit can automatically track the maximum power point of the solar panel. 5. It also low voltage locking, battery end overvoltage for protection and charging status indication function. Specification: Condition: New Over-charging Voltage: 14.8v Floating Charge Voltage: 13.55V Charging Current: 3A Working Environment Temperature: -40-85 Weight: Approx. 12g / 0.4oz Size: Approx. 31 * 49mm / 1.2 * 1.9oz Package List: 1 * Solar Panel Controller Charging Module