3.7V 4.2V 18650 Lithium Battery Charging Boost Power Board Protection 5V/2.4A Charge/Discharge Integrated Module 5pcs

1. The motherboard received, first connected to the charging head test, see the LED light status, the normal LED lights will light up sequentially. 2. Normal application, the battery must be welded, (wire twisting will be insufficient power supply), the battery reverse motherboard must be burned, pay attention to the battery and the motherboard line can not be too fine, try to be thicker to pass 5A current. Can not be too long, the interface needs to be welded; batteries can only be connected in parallel (parallel number is not limited), can not be connected in series, series must burn the motherboard. 3. Ensure that the battery is good, if the battery is connected to a full charge, plug the phone can not discharge most of the battery aging scrapped. 4. If the battery comes with a protection board, ensure that the protection board protection current is greater than 5A, otherwise remove the protection board board reverse must burn, burned IC will have traces. 5. Access to the battery to determine access to the 3.7V lithium batteries, not other batteries. Ensure that the battery is not connected in series, otherwise the battery terminal access voltage higher than 4.5V may burn the board. 6. Input and output switching to have time, about 1 second, so this module does not completely replace the UPS module, please note!