ITEM NAME:1Pc 5V 2A Power Bank Charger Module PCB Step Up Boost Circuit Board For Xiao_ Product introduction: 100% brand and high quality Color: Black Output: DC5V / 2A max, input DC5V / 1A Android line interface Battery voltage requirements: 3.7-4.2 lithium battery Package includes: 1Pc 5V 2A Power Bank Charger Module Note: the battery must be connected in parallel rather than in series. Test the voltage before installation. As long as one battery is bad, it will affect the whole battery. Recognize the positive and negative. Once connected wrongly, the IC of the main board will be destroyed. The exposed part of the wiring should be wrapped to avoid the damage of the main board due to the contact of the aluminum shell with the conductivity..Note: the battery must be connected in parallel rather than in series. As long as one battery is bad, it will affect the whole battery. Recognize the positive and negative. Once connected wrongly, the IC of the main board will be destroyed.
