Here’s a very simple circuit you can use to build a battery charger that will recharge regular alkaline *non- rechargeables.* It uses a low current to charge and is reasonably safe. It may not be officially recommended, because there is some risk of a battery burst, but it’s not likely to kill you, blind you, make you impotent, or even make much of an impression on your day. The builder pushed a pair of AAs by charging them until they did “burst.” Three drops of “weak acid” fizzed out of the side, which he wiped away with his fingers. I personally wouldn’t recommend touching it, but I’ve certainly had battery acid on my skin numerous times, washed it off, and been just fine. I have WAY too many disposables around. I’d love to juice them all up again and spare throwing them away or buying more.
[Via Gizmodo]
