http://www.rccaraction.com/articles/build_battery.asp
This is pretty good. Although i would just sand the ends, you can use a dremel sanding wheel LIGHTLY.
Although if you are not confident, i would pay someone to do it, no point in risking damaging them for the sake of a few quid.
Do not use the hair dryer if you arn't heatshrinking
The guide hasn't got the best soldering in the world ive just noticed, i hope your better
