Martin,

Try charging at one amp to see what happens.

When I was flying electric RC Sailplanes, I would charge at one amp and
discharge at 60 amps or so, and could always charge to full capacity or
slightly beyond. They were Sanyo, but I doubt that the particular cells
are still made. They were 1700's and 1900's.

At 12:20 12 April 2009, Martin Gregorie wrote:
In the middle of last year I bought a digital SLR that runs on 4 x AA
cells. The instructions say that alkalines are OK for checking the
camera, etc, but 2400 mAh NiMH are the preferred option for normal use.

However, I've yet to find a 2400 mAh cell that, according to my
chargers,
can hold more than 50% of the rated charge and I've tried some that can

barely manage 500 mAh. I've tried Maplins hybrids, cheapo budget
batteries, and Ansman, but none seem as good as a vanilla set of
alkalines. This has never been a problem with NiCDs of all sizes (except

those made by GP), but all the NiMH cells I've tried have been
disappointing to say the least.

I have decent peak chargers: a PC-controlled Vencon UBA III+ and a Pro-
peak Prodigy II set up for 500 mA charge and 250 mA discharge. Both
chargers measure input charge and capacity on discharge.

I'm asking here because I've never had a good experience with NiMH -
not
with this camera or in the past.

I know there are people on r.a.s who know a lot about batteries. So, what

brands of NiMH battery have you had good results from, i.e. that actually

do what it says on the tin?


--
martin@ | Martin Gregorie
gregorie. | Essex, UK
org |