5A Charging Module MPPT Solar Panel Controller with Charge Indication Function Features: 2. It can charge battery, lithium battery, etc., with charge indication function to facilitate observation of charging state. 3. DIY is a regulated power supply with constant current function. It is not afraid of short circuit during use, which can protect the load.  4. The product can power your electronic device. 5. Drive high-power LEDs, which can be combined in series and parallel. 6. As a car power supply, power your mobile phone or various digital products   Specification: Condition: Item Type: Charging Module Output Constant Current Range: 0.05-5A (default output constant current is 3A) Output Turn Range: 0.01-5A (Default turn lamp current is 0.3A). The current range will have a slight error due to the difference in part parameters. Working Temperature: -40~+85℃ Working Frequency: 180Khz Short Circuit Protection: Yes (Limit current is the set constant current value) Over Temperature Protection: Yes (automatically turn off the output after over temperature) Input Reverse Connection Protection: No(if necessary, please input the diode in the input) Output Anti-Backflow Protection: No Size: Approx. 60 x 31 x 22mm / 2.4 x 1.2 x 0.9in(LxWxH)   Package List: 1 x Charging Module   Instructions: Charging indication: red light when charging, green light when full. The detection method of the turn signal is current. When using solar panels to supply power, the solar hour charging current is also small, lower than the turning current, and will also light green, but it is not full at this time, please pay attention to distinguish. Using a live meter will see the charging current more directly. Installation method: 4x3mm Screws Wiring method: terminal block (for the wire when the shell is output) IN is the input, OUT is the output   Note: 1. Be sure to add anti-reverse diodes when the output is connected to the battery, otherwise the module will be burned out! Remember! 2. The current detection of the module is low-end detection. Please do not short the input negative pole and the negative pole of the output directly.