[ltp] self-made external battery for laptops project

[peter nol]

Hi all i recently got an IBM 600 thinkpad at an auction with a dead battery.
The price for severall cells and a chip sealed in plastic called "a custom 
laptop battery" is ridiculous, so i decided to make my own.
Googling got me to this page 
where it is described how to make an external battery from a 12v camcorder 
battery sold in radioshack for $40
And "fool" the laptop to think that it's a 
http://www.fixup.net/tips/battery/battery.htm

I am also looking into the idea of using a small motorcicle 12v battery.
I will probably use the AC plug in the laptop.
Looking for advice/opinion.
Does the thinkpad require 16 volts for the plug to operate or 
is 12 volts adequate and you just have to trick it into starting to use the 
12 volts- like with the libretto?
What do you think?
I will probably get the battery in about 2 weeks and start experimenting.


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