On 5/6/2016 3:37 PM, Mr Macaw wrote:
On Fri, 06 May 2016 20:00:09 +0100, Stormin Mormon
My marine GPS uses AA NiMH cells and I find that the self-discharge rate
on them is quite high - high enough that I need to charge the batteries
the night before each use.


The earlier NiMH had a rapid self discharge.
The more recent ones aren't so bad. It is
also possible your cells had a lot of
discharge cycles.


I have never known any rechargeable battery self discharge much unless
it's very old.


The early nicads went down in a few weeks. My
other experience with rechargables was some
NiMH that I got at Walmart, that were a few
years old.

Of course, my drill batteries from Harbor
Freight (China made) only stay charged a
couple days. I usually have to charge them
the night before I use them.

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Christopher A. Young
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