- ancient laptop battery recharging
- Posted by orange on April 21st, 2008
I bought this ancient laptop (Toshiba T2000SX) on flea market.
It uses two batteries (second one is for BIOS):
-pa8725u (14.4V 2.2AH NiMH) shows 0,45VDC
-XZ0072P09 (6V NiCad) shows 0VDC
They are dead, but I'd like to just try to recharge them. Of course
there is no
original AC power supply. So, can I use standard
AC/DC converter (1000mA max)? Or maybe the 9V NiMh recharger?
Should I just connect + to + , set voltage to 12VDC and let it charge
for a while?
- Posted by BigJim on April 21st, 2008
batteries that old my not even hold a charge and if they do it might be like
3%
"orange" <orange47@gmail.com> wrote in message
news:dc9741d4-275f-497e-93ca-80e653a5dff0@f63g2000hsf.googlegroups.com...
- Posted by Barry Watzman on April 22nd, 2008
Get a proper power supply. Should be cheap on E-Bay.
As for the batteries, they are going to be worthless unless you rebuild
them with new cells.
orange wrote:
- Posted by orange on April 22nd, 2008
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?
- Posted by G.G.Willikers on April 22nd, 2008
orange wrote:
http://www.bobjohnson.com/_store/Dis...prodID=pa8727u
- Posted by Dave Martindale on April 22nd, 2008
orange <orange47@gmail.com> writes:
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
