cctalk Digest, Vol 12, Issue 5

[Marc Verdiell]

Good info David. Thanks once more.

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"J. David Bryan" <jdbryan at acm.org> said:
Subject: Re: HP 2113e Battery resistor
>I might put NiMH batteries instead....
That may not be advisable, given the continuous constant-current trickle
charger in the CPU power supply.  The Panasonic "Nickel Metal Hydride
Technical Handbook" recommends charging for no more than 10-20 hours,
saying:
  "The overcharging of nickel-metal hydride batteries, even by trickle
   charging, causes a deterioration in the characteristics of the
   batteries.  To prevent overcharging by trickle charging or any other
   charging method, the provision of a timer to regulate the total
   charging time is recommended."
Panasonic's "Nickel Cadmium Batteries Technical Handbook," on the other
hand, says explicitly that continuous trickle charging for Ni-Cds is a
recommended charging method.
                                      -- Dave
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