Dual USB Charging Control Board for mobile power banks. The LCD Display module provides charge status. The module provides overload protection, over-discharge protection and overcurrent protection.
Specification:
Micro USB input: 5 V 1A
USB output: 5V 2.1A / 5V 1A (Dual USB interface)
Charging screen: intelligent digital screen
Type of batteries: liquid lithium ion batteries (18650)
Product size: 57mm x 28mm
Screen size: 27mm x 17mm
Input Voltage: 3.7V
Installation instructions:
The circuit board is connected to the negative battery B-, B is positive
Check polarity, wrong wiring will burn the board.
the battery is connected in parallel welding.
There is insulation between the battery and the circuit board
The battery can not touch the circuit board, may cause short circuit if it does.
They don't have the right item but when customer call for replacement they will say they don't have for this statement they will hold the customer call they will put in mute later they will say they don't have all are faulty item I've ordered for micro SD to micro SD but they have shipped SD to SD they are not ready to listen to the customer need also.
It is a great product for what it offers. The digital zoom is where it falls short in its clarity being digitally zoomed, but not very bad.
The optical lens is is brilliant.
Overall a great product at this price point.