[volt-nuts] fluke 731b battery pack

[David]

Are the low discharge NiMH cells available now any more rugged than
regular NiCd cells as far as charging current?

One solution I would consider is using LiFePO4 cells and modifying the
charger for current limited constant voltage.

On Wed, 03 Aug 2016 19:37:12 +0000, you wrote:

>--------
>In message <CABqdsz8mKPZ02mJsL=h5D5idBzom5crZkqzbTJguPomOY5aUHA at mail.gmail.com>, Eric Garner writes:
>
>I would go with NiMH, since the NiCd production volume of small
>cells is now so low now that quality suffers.
>
>You need to pay serious attention to the charging circuit, no
>matter which chemistry you pick.
>
>The trickle charge current is probably too high for modern NiCd and
>guaranteed too high for NiMH.
>
>If there is a bulk charge state, you should check the parameters
>(current/timer) of that too.
>
>Finally, try to measure the final config (ie: on the right shelf,
>in the pile of kit) temperature of the battery pack, before
>deciding/adjusting charging parameters, both NiCd and NiMH change
>properties rapidly above approx 40C/100F.