[Elecraft] Charging IMEDION2400 mAh batteries?

[Greg Troxel]

"David F. Reed" <w5sv.dave at gmail.com> writes:

> I have these MEDION2400 mAh batteries that I am using in my KX3; I
> have 2 set of them so I can be charging one set while operating with
> the other.
>
> My question is, using my Powerex programmable charger, what settings
> should I use for current and time?

Assuming you have a MAHA/Powerex MH-C9000, for charge I would use 200 mA
or 500 mA, if you have the time, and 1 A otherwise, and sparingly 2A if
it's going to make your life better with operating time.  In general in
seems lower charge rates generate less heat and that's good, but 1A
isn't really a problem.

The MH-C9000 sets charge with current, and then decides when it is
done.  It will show you the charge delivered to each cell.

The internal charger is low rate and time only.  That seems fine too.

I also recommend doing a "refresh-analyze" cycle, 200 or 500 mA charge,
200 mA discharge, and recording the results (and putting labels on each
cell) when you get them, and every year or so.   I have found that
batteries that aren't tested can't be relied on long term.

73 de n1dam