LiPo or NiMh

[Patrick]

It seems that you also get better runtime with lipo as well (not talking about capacity spec's). A couple of guys at racing just switched from 12 cells nimh to 2 trackpowers (same time as I went to 5s lipo), they got a pretty good power increase and now they use about 1400mah in a 5-6 minute race and I use about 1300mah with my 5s setup. Before when we were using nimh it wasn't uncommon for one of us to start loosing power near the end of the race (3300's up to 4200's). I think usually we were using close to 2400mah or something like that.

[offroader]

Understanding the numbers for Lipos? ( 2300mah 5S 20C )There are so many models, types and capacity I know the 2300mah is the capacity but what does the 5S or 20C stand for?