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Motherboard comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection.Intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge.
The circuit board is connected to the battery negative B-, B + is the positive, do not connecting reversed, connecting reversed will burn the board, the battery is connected in parallel welding, assembling battery. Note that the insulation between the battery and the circuit board, battery lead not to touch the circuit board, so as not to cause a short circuit.Package İncluded:1 x Mobile Power Bank 18650 Battery Charger PCB
- Micro USB input: 5V 1A
- USB Output: 5V 2.1A / 5V 1A(Dual USB interface)
- Charging display: intelligent digital display
- Batteries Type: liquid lithium-ion batteries (18650) 3.7 lithium-ion battery only
- Product Size: 57mm x 28mm
- Screen size: 27mm x 17mm
Note: There is no limit how many batteries can be used, only need to make sure the total capacity is 20000mAh.