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.
This LTE Cat 1 modem is like a wizard for your IoT stuff. It makes things super easy to connect and goes zoom-zoom with its super-fast speeds. And hey, it's got some fancy security stuff too, so you can sleep easy at night. Plus, it doesn't gobble up power like a hungry monster, so your devices last longer. It's small and mighty, a real game-changer for any IoT adventure. Totally worth checking out, trust me on this one!