[volt-nuts] fluke 731b battery pack

[Bill Gold]

Eric:

    I have been using NiMH AA batteries in my 731B for at least 15 years
now.  I am sure that the specs say don't use them in a circuit designed for
NiCd but I haven't had any problems with over heating or overcharging.  You
have to do some mods to the battery mounting to get them in there but once
done you are good for a lifetime.  I have never checked to see how long the
NiMH batteries would run for but my guess would be longer than the original
NiCds.

Bill

----- Original Message ----- 
From: "Eric Garner" <garnere at gmail.com>
To: "Discussion of precise voltage measurement" <volt-nuts at febo.com>
Sent: Wednesday, August 03, 2016 10:27 AM
Subject: [volt-nuts] fluke 731b battery pack


> So I managed to get one of the Fluke 731b's mentioned on the list a while
> back. It was a little more chewed up than the description in the auction
> led me to believe:
>
>
https://plus.google.com/u/0/112871219575380932919/posts/iDWyzwYYRdj?pid=6314634305601690930&oid=112871219575380932919
>
> but it appears to be functional.
>
> The NiCd pack appears to have leaked some time in the past and was
removed,
> which is fine since I was going to replace the batteries anyway.
>
> Looking through the archives, replacement battery packs for the 731b has
> been a popular topic but I have some questions that remain open.
>
> 1. NiMH cells seem to work in the 731b so I'd prefer to use them over NiCd
> because of the higher capacity and lower toxicity of potential leaks. Is
> there a downside to doing this?
>
> 2. If I go with NiMH, is there a manufacturer that's prefered? reading
> reviews of NiMH cells online leads me to believe that some manufacturers
> (Tenergy) have lower quality and are less reliable.
>
> 3. If I go with NiCd would you expect problems if I used larger cells
(4/5A
> vs 2/3A)
>
>
>
>
> thanks
>
> --Eric
> _________________________________________
> Eric Garner
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