No one is enthused to find out their car battery died. But just because you left the headlights on overnight doesn’t mean ...

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

Even if a vehicle 12V battery is severely damaged thanks to an abundance of use or being left dormant for a long period of time, there is a chance the Hulkman Sigma charger can help revive the thing.

It's still a compact battery charger, measuring ‎10.3 x 8 x 3.7 inches, and weighing three pounds. Its best feature is automatic, walk-away charging for both 6 and 12 volt batteries, which it ...