On 10 Sep 96 04:50pm, Marc Chabot wrote to Bill Cheek:
 MC> Hi Bill, it's me again.
 MC> Now that the iron solder is cooling...
 MC>                                 9V 1A   9V 100ma
 MC> without a charge                18.4 V  12.3 V
 MC> plugged in the PRO43            13.8 V  10.3 V
 MC> plugged in the PRO43 (162.5500) 13.2 V   9.2V
 MC> I'll keep the 100ma in the scanner as much as possible and only
 MC> use the 1A for short kickin when the PRO43 display is blinking.
 Hi, Mark...
 You may be missing a very important part of the charger  battery
 relationship.
 The battery doesn't know (or care) about little things like optimal charging
 rates. They will attempt to suck up all the current they can.
 If you offer it 1 amp (as you are with that 1A charger), the battery will
 happily sit there and suck it ALL up. Since that is far above it's normal
 charge rate, it will present very little load to the charger, and thus the
 voltage will remain high (too high). The battery is, then, attempting to
 charge itself at 18 volts, 1 amp. Not good.
 The charger recommended by Radio shack, together with the PRO-43's circuitry
 and a depleted battery pack, is a charging system designed for *that*
 scanner. Change any part of that system (especially the charger), and it's
 no longer right. In this case, those batteries are taking a heck of a
 beating, even for a short charge period.
 Put that 1 amp charger away somewhere, and your batteries will thank you by
 lasting a lot longer.
Bill Funk:  Internet:  skypilot@starlink.com
	    ASCIi User Group: http://www.starlink.com:80/~ascii
... #@$ffwe99fjaljk ... Hey! Get the cat off the keyboard!
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