Hi!
The things, you need for building a battery are:
1 battery for Nokia 7210 (mobile phone)
1 NTC with 10k
adhesive copper foil
soldering gun + solder + soldering adipose (I don't know, how to call it)
heat shrink tube
heat gun
Stuff for electroplating like gold dilution, ...
and some sellotape
If there is someone, who is really interested in building the battery itself, please write me a mail, and I'll explain it. lzabel@gmx.de
But I think, it's cheaper to buy a original Sharp battery, then building it itself..
Unless, you've gott all this stuff at home!
Regards
Ludwig
P.S.: Here are some Pictures of the battery
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