On Fri, 06 May 2016 22:38:41 +0100, Stormin Mormon wrote:

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.

Nope, I bought NiCads when they first came out. There was no noticeable self discharge. Sometimes I'd have one in a clock etc because I didn't have an alkaline available, and it would run for 6 months.

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.

I buy batteries on Ebay, and test the capacity when I get them. Anything not up to standard I request a partial or full refund and always get it. The sellers don't like negative feedbacks.

--
Why do Italians hate Jehovah's Witnesses?
Italians hate ALL witnesses.