NiMH batteries

[John Rouse]

I have a DECT phone with a spare handset and charger. One of the handsets stopped recharging so, assuming the battery had reached the end of its natural, I bought a new one. That wouldn't charge either, so I assumed the handset was faulty.

SWMBO spotted another similar phone is a catalogue returns place, so we bought it and tried to charge it (on the original charger), but again it wouldn't charge. I tried charging the new phone on the new basestation but again it wouldn't charge.

I'm now wondering if the original charger had a fault on it that has knackered all three batteries. Can NiMH batteries become reverse- polarised or anything? Can you bring them back to life?

What's odd is that one of the original phones must have been charged on the spare charger from time to time, as we swap them about, but that seems still to be working OK.

Any thoughts?

J.

[M Junk]

I've had a problem with a NiMH phone battery that had been allowed to discharge for too long and wouldn't recharge. The charger was too intelligent wouldn't start charging. Following advice on the net I 'flashed' the 3.6V battery with a bench 5V supply and it recharged O and still works fine...

[John Rouse]

In article , M Junk writes

I'll give that a try then. I've got one of them to charge after trying a few combinations of phones and chargers, but it doesn't seem to keep its charge for more than a few minutes.

J.