Charging a sick power bank

Apr 12, 2019 Last reply: 7 years ago 5 Replies

Hi,



I have a power bank (branded Power Bank).



It used to charge via a surface mount micro USB, but that is now surface unmounted.



I?ve opened the unit up (but not got my DMM on it yet.



It consists of a small pcb (about 1cm2) and a cell / battery (A little bigger than an AA).



Does the team think this could be recharged by connecting a regulated PSU to it? And if so, what voltage It might require?



TIA



Chris


Why not try and replace/resolder the USB socket? Big Clive has a lot of good videos on soldering on his YouTube channel including surface mounted stuff.

Tim

One that uses an egg from a battery chicken.

GH

If you can get at the USB 5v input rails and give it 5V, the board should still charge it. I wouldn't charge the lithium cells directly without protection, since they could catch fire.

If the power bank is sufficiently generic you might be able to find a replacement PCB:

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or more likely transplant the cells into a new case:
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(harder if they're pouch cells than 18650s)

Theo

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