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ancient laptop battery recharging

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ancient laptop battery recharging orange 04-21-2008
Posted by Dave Martindale on April 22, 2008, 2:25 pm
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>thanks.. but, I'm not sure if its working at all..
>I noticed a connector on side: 18VDC
>It seems to have 4 pins but I don't have pinout :(
>if I find it, can I try to run it with, say, 12VDC ATX PSU?

Probably not. If it has 4 pins, it might expect the power supply to
provide multiple voltages (e.g. +5 V logic, +12 V for disk and CD, -12
V for the serial port).

Modern laptops generally take a single input voltage (e.g. 20 V) and
internally convert that to all of the other voltages needed. But old
ones were more likely to require several voltages.

        Dave

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