When we saw [Max.K]’s automatic NiMh battery charger float past in the Hackaday tips line, it brought to mind a charger that ...

– new NiMH batteries. It seems so sensible to make new from old that we're almost in disbelief to learn that Toyota is the first company to do so with automotive NiMH batteries.

[Paul Allen] has been working on the latest iteration of his NiMh battery charger and it looks amazing! We’ve covered [Paul Allen]s awesome hacks and tutorials before, but never this project.

Cellphones of the past came equipped with rechargeable nickel-based batteries with (Ni-Cd and NiMH). In the past few years, however, most rechargeable batteries used in phones are Lithium-based.

We're about 10 years into the digital photography revolution (depending on what birthday you count) and the NiMH rechargeable AA battery is still going strong. It's still found in some entry-level ...