I like the 4056 charging boards for li ion, are there any for AA or AAA batteries?
I have single or 3 aa/AAA lights, hard to get it even for a regular charger. I guess I could try to run down a 3 and single. Any good single AA/AAA chargers?
FWIW just ordered this:
200ma seems slow, though
to correctly determine end of charge for NiMH it is needed to detect slowdown of voltage rise or small drop, typically 5-10mV.
To detect this drop/slowdown - current must be high enough. 200mA is definitely not enough for an AA, and most likely not enough for AAA.
So most likely this one is just a “dumb” charger not detecting end of charge at all, just keeping the battery on trickle charge forever. Or at least until some timer doesn’t expire.
edit: IKEA LADDA is a cheap and good charger, seems to have 4 independent chargers with correct dV/dT algorithm, reviewed by HKJ