This is Battery back Charger with led flasher. make your own battery bank. two USB ports give you to charge two device at the same time.
Parallel 3.2-4.2V 18650 Battery (Up to 200A max)
Input Current - 1A Output Current - 2A
Function Feature: with a hightlight LED lamp (long press or double click power key can start) Electricity Quantity Display:4 class LED light display electricity quantity, non-operating state will be intelligently off
Length x Width
26mm x 69mm
1.Power has designs of overcharge, overdischarge, short circuit protection, does not need to worry about the time of charging 2.Intelligent Output.When equipment is fully charged, it will stop charging automatically to prevent from overcharging 3.Power has multipke safe designs.Output voltage and current is stable, never to damage user's device