There’s a good chance that if you build something which includes the ability to top up a lithium-ion battery, it’s going to involve the incredibly common TP4056 charger IC. Now, there’s certainly ...

Sure, coin cells usually last a long time — but do you really want to buy new ones and throw the old ones out? The LiR2032 coin cell is a rechargeable lithium battery, for which you can build a ...

Wanting to built a small Li-ion cell into something, I was seeking a safe and simple way to charge it, and came across a plethora of built pcbs that include a micro-USB socket, a charging chip, a ...