DIY lithium-ion battery charger. Free.
A free, upgraded charger for Li-Ion batteries of any capacity WITH OVERCHARGE PROTECTION! Also features a battery connection indicator.
Version 2.0 - INCREASED POWER. (Final Version)
I doubt you've seen anything like this before.
Ten minutes and it's ready.
Do it yourself.
If you didn't understand anything in this video, I recommend watching the first version first: • Зарядное устройство для литий-ионных аккум...
The charger is made from an old USB phone cable, three non-rechargeable e-cigarette traction sensors, wires from an old computer, and two Chinese alligator clips.