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 ...

These days, it doesn’t take a trained mechanic to recharge any type of battery found in an internal combustion engine vehicle. Automatic car battery chargers are widely available, easy to use ...

There’s nothing quite like [Elliot]’s cherubic sense of wonder and maniacal laughter after he tests his fully automatic AA battery-launching air gun. That fires 600 rounds a minute.

It’s only a matter of time before you’ll experience the awkward inconvenience of a dead car battery. During the cold of winter, the likelihood of that occurring is higher, when freezing ...