Available Batteries: Polymer Battery 18650 Battery Lithium Battery Cell Phone Battery Tablet Battery MP3 Battery
Can be connected to a lithium battery can also be connected in multiple sections of lithium batteries, as long as the voltage is 3.7-4.2V in parallel , how many batteries is not affected
Size: about length 22MM * width 17MM * thick 11MM
input : 5V 1A
output : 5V 1A
lithium voltage : 3V- 4.3V
Ports : charger Micro USB Android port . Output USB port
charge indicator : when charging , the red led light; when full charged , it off
it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time )
![](https://i1.wp.com/makerselectronics.com/wp-content/uploads/2020/09/5V-1A-3-7V-Power-Bank-Charger-Circuit-Board-Step-Up-Boost-Power-Module-18650-Li.jpg_q50.jpg?resize=800%2C800&ssl=1)