NiMh batteries
On Tue, 24 Nov 2009 00:43:34 +0000 (GMT), Dave Plowman (News) wrote:
In article ,
The Medway Handyman wrote:
Do NiMh batteries self discharge if left unused for a period of time, or
is this just a myth?
They do - as do Ni-Cads. But by how much seems to vary wildly by make. Or
whatever. In other words you could have some which appear to take a full
charge and last ok when used near immediately - but discharge very quickly
when not used, as it were.
Newer ones will retain significant charge for up to a year. The ones that
come pre-charged are normally that type. Hybrio was one make, now
superceded by uniross ultra.
They are more expensive, but I find them useful for a backup set.
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