[Scan-DC] Re: Battery America report

[john wilson]

  Buy the NIMH/Nicad charger from Crane.

Mike Agner wrote:

>    Today, Bob wrote:
> ======================
> I recently installed new Battery America 2300mAh NiMH batteries in a RS
> Pro-26. My charger is fried so using the internal radio charger, charged
> them for about 15 hours. Left it on and waited. 10 hours later radio 'low
> battery' beeps started. Radio draws 77 ma squelched. Obviously 770 mAh is
> not good.
>
> Anyone know if there's an exact voltage that tells you a NiMH is fully
> charged?
> ======================
>   Bob, many older handhelds can charge NiCads fine, but not NiMH.  The
> charging rate, AFAIK, and method is very different.  The full draw at
> squelch means very little; what you need to know is the amount of current
> supplied to the batteries during charge, the length of time(which you have)
> and something else- there is a very specific formula you can use to
> determine how long it would take to charge them.  Check your manual before
> you try that again.  Perhaps someone here has that formula?
>
>    As for the Maha unit- I had one when I briefly owned the FT817 QRP
> radio.  Worked just fine. As I understand it, older units had a real
> problem with erratic overcharging, the newer ones are OK.
>
>    73s  Mike
>
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