On the other hand, battery packs contain potentially volatile materials that require circuits to be designed with safety ...

Tissues are used to facilitate absorption of the electrolyte solution, and a 3D-printed case is used to help hold everything together, with a spring ... of the battery through the circuit to ...

It seems that he’s not alone, so he set out to reverse engineer the battery charging circuit to see if there was a fix. Boy is there, what he found is the diode above, apparently installed ...