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PICList Thread
'Re[4]: [OT] Batteries'
1997\11\28@042717 by Scott Walsh

    I suspected you may say that, I am using a Panasonic 600mAh three cell
    NiMH battery and this product will for all intents and purposes will
    never sleep, and so continuously draws 60mA from the battery. This
    includes the times when the battery pack is being charged!

    The voltage drop at this rate, say measured every 20 or 30 seconds is
    not large for my 8bit ADC to measure until the unit has about 1 minute
    of battery life left ... unfortunately my marketing guys would like
    something like 10, 5 and 1 minute warnings, typical eh? Anyway, they
    get what they are given.

    BTW: Thanks to the PICLIST I seem to have my battery charger problem
    solved, due to the fact the product is still working while being
    charged using the rate of change of voltage reaching a minimum did nto
    prove succesful, instead using the thermistor inside the battery pack
    proved far more useful, this was helped by the fact the battery is in
    a closed environment when being charged and so the heat it produces
    does not conduct away from the  battery and it warms up nicely.


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Subject: Re: Re[2]: Batteries
Author:  pic microcontroller discussion list <spam_OUTPICLISTTakeThisOuTspamMITVMA.MIT.EDU> at
Date:    28/11/97 11:00

I would think so - you are not shorting it out, but getting a reasonable
current (few mA, normally) so you are loading the battery

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