Dual USB 3.7v to 5V 2A Power Bank DIY 18650 Li-Ion Charger with Indicator Led [Black]

Dual Micro USB 3.7v to 5V 2A Mobile power bank charging module DIY 18650 Lithium-Ion Battery with Indicator LED. This is the mobile power module Accessories, 18650 Circuit board shell. Meet the individual needs of your DIY, but you must understand basic electronic assembly.