for sale Power Bank Box including the electronic device inside.

The picture is the real picture of the product.

All you need is to get your own 18650 Battery and you are up and running.

The benefit of building the power bank by self is the knowledge of the REAL capacity of the battery you put inside.

There is many fake capacity power banks on eBay - so why not to Do It Yourself ? Just buy a decent battery like Samsung, Sony, LG, Sanyo... etc...

I am testing every module before dispatch so you are sure there will be no dead on arrival.

Please note:

make sure you do not mix the battery polarity as this circuit has no protection against reverse polarity.