"The Natural Philosopher" wrote in message
...
John Schmitt wrote:

The other day, without warning, the battery in my mobile died. It still
appeared to have about 80% charge in it at lunchtime, in the afternoon
when I next looked at it, it wouldn't even switch on. I had left it on, I
normally do because I get a good week's use on one charge. A couple of
people I have talked to say that this has happened to them. I only have
had a couple of this type of battery, so my sample size is too small to
be meaningful. There must be some of you out there who have much larger
experience of NiMH. How often does this sort of total failure occur
relative to gradual?

John Schmitt

Its all too familar.

Lithium ions are better at that sort of thing - they tend to die more
gradually.

NiMh has pretty horrible self discahrge anyway, and it ends its life by
discharging itself in a day rather than the usual 6 weeks ...

Strongly advise updating to lithium, - check tghe net - loads of
aftermarket lithium batteries from specialist companies.

On the other hand you could, like me, solder in some new NiMH cells for
under a fiver :-)