[MetalMan]

Assuming resistance is very low (0.001ohms for instance), then current can flow at a high rate. For Lipos, this can be unsafe, which is why the voltage difference should be no greater than about 0.05v. With 0.05v and 0.001ohms, the current flow could reach 50amps! So with a voltage difference of 1v and a low resistance like 0.001v, an amp spike could hit 1000amps! A more realistic Lipo resistance would be 20milliohms (depending on size), and with a 0.05v difference, amps could reach 2.5.

My thinking may be off a bit, but I blame it on never having a class that teaches electricity! (But, there is the internet. This year in AP Physics we will be studying electricity, so I should know a little more then :).)

P.S., I was being a little sarcastic about getting out. You probably aren't going on a forum everyday where Lipos are discussed, like I do. There parallel packs are seen at least 60% of the time! All of the Lipo packs I own are parallel packs (but there are groups of cells in parallel, and then those groups are put in series).