can someone direct me to a good book or web page on battery pack assembley?

Generally LiPo battery packs come already assembled.

http://www.logoheli.com/end2end.htm

here is one that I followed a little when I made mine. I had a few others bookmarked but they seem to be gone now.

That has nothing to do with LiPo batteries.

http://www.dream-models.com/eco/LipoPack.html
There ya go. Typically they come assembled like Hankster mentioned. But you can buy single cells. But I woulden't use them in cars. The reason the "car specific" ones are in the cases and to make them less likely to damage in a crash. I've built packs for my planes before though. If you can use a soldering iron, you can build a pack. But with lipo's you have to be extremely careful not to cause a short. Even one short can hurt the packs performance immensly. It helps to use painters tape, and tape off one terminal at a time the help prevent shorts. Also get yourself some strapping tape to wrap the pack in when finished. Helps with durability and insulation from shorting. Shrinkwrap is also a good idea, helps hold the pack together.

Mike

Plus one short can cause the cells to start on fire and burn down your house. If the OP has to ask about soldering cells, they should not be attempting to solder LiPo packs together.

I've shorted lipo's all the time (on accident), things happen and wires touch. One short will not burn down your house. I've even accidently pluged one lipo into another (2s 350 into 2s 700), the 350 puffed and I disposed of it properly (discharged to just about nothing with light bulbs, then put it in a bucket of saltwater till the termials corroded off). No fire, no big deal. The 700 is still running strong. The only way I have gotten a lipo to light was twisting the terminals (pos and neg) together and left it...

Lipo's really aren't as dangerous as most say, if treated correctly. I've been flying with lipos for over two years now, and not one accident. I don't use anything special. Hell I've never even owned a lipo charging bag. If you take your time and do things correctly you'll never have a problem. The most dangerous things with lipo's is charging at the wrong setting. That's when problems occur. If you charge at too high a voltage that can defiantely cause a fire.

Just out of curiousity, how would you learn to solder them with out asking? Every one has to start somewhere...

Just out of curiousity, how would you learn to solder them with out asking? Every one has to start somewhere...
You could learn to solder on something that won't be destroyed or damaged if you make a mistake.

Maybe off the subject, but I can't see someone "learning to solder" by reading an answer on a forum. Having someone (who knows how to do it very well) show you once or twice would be better than all the reading you can do.

I meant learning to solder lipo's. If you can't solder, don't even try it. If you can solder, its really not hard at all.