Specifications: 3.7V USB Charger With a BMS (Battery Management System) for Li-ion or Li-Polymer Batteries.
Input: - Input Voltage: 5V DC (via USB port). - Input Current: 500mA to 2A.
Output: - Output Voltage: 4.2V (fully charged voltage for 3.7V Li-ion/Li-Po batteries). - Charging Current: 500mA to 1A - Cut-off Voltage: 4.2V ± 0.05V (to prevent overcharging).
BMS Features: 1. Overcharge Protection: Automatically stops charging when the battery reaches 4.2V. 2. Over-discharge Protection: Prevents the battery voltage from dropping below 2.5V–3.0V. 3. Short-Circuit Protection: Safeguards against short circuits during charging or discharging. 4. Over-current Protection: Limits the current to prevent damage to the battery