The circuit is based around the TP4056 integrated circuit, which handles the charging of a single lithium cell — in this design using supplied power from a USB port. The circuit is able to ...

Ever want a seriously powerful PCB for charging a Li-Ion pack? Whatever you want it for, [Redherring32] has got it — it’s a board bearing the TPS25750D and BQ25713 chips, that lets you push up ...

And while fast charging keeps us topped up every day, the absence of replaceable batteries means eventually, the lithium-ion cells ... only turning the charging circuit back on to top up the ...