Item Type: Battery Charge Boost Module_x000D_ Material: PCB_x000D_ RISET: _x000D_ Charging Current: 180K 0.5A, 90K 1A, 75K 1.2A, 60K 1.5A_x000D_ RVSET: _x000D_ 2S Charging Voltage: 1K 8.1V, 68K 8.2V, 120K 8.3V, NC 8.4V_x000D_ 3S Charging Voltage: 1K 12.3V, 68K 12.4V, 120K 12.5V, NC 12.6V_x000D_ Functions: _x000D_ 1. Support QC fast charging_x000D_ 2. 15W synchronous switch boost charging_x000D_ 3. Increase charging efficiency by 94%_x000D_ 4. Can be set to charge 2 or 3 series of lithium batteries_x000D_ 5. 2 series balanced charging_x000D_ 6. Adjustable charging current_x000D_ 7. Input overvoltage and undervoltage protection_x000D_ 8. Adjustable charging timeout protection_x000D_ 9. Output overcurrent, overvoltage and short circuit protection_x000D_ Introduction: _x000D_ This module is applicable to 2S or 3S 3.7V lithium battery. Through short circuit setting, the default is 2 strings. When using 2 strings, the module can use its own battery equalization function, which is very practical. Type C port and welding line can be used for input. When the Type C port is connected to the fast charging power supply, the charging voltage is automatically adjusted to improve efficiency. If the input voltage of the welding wire input is less than the battery voltage, the module can only work in the boost state.