They stand apart from other batteries in their high charge density and high cost per unit. Depending on the design and chemical compounds used, lithium cells can produce voltages from 1.5 V (comparable to a zinc–carbon or alkaline battery) to about 3.7 V.

Are you experiencing problems with your powerbank? Is it not lighting up? Are you unable to charge your phone or your powerbank?
Please check the points below before getting in touch. That makes it easier for us to help you if the problem persists, and can also save you time.