Cs is the industry standard for cordless powertool (23dia43 height) and powertools were to only products with cells capable of delivering high enough currents. NiCd cells started at around 1300mAh (When I started at Ever Ready in 1989 we were still making 1300mAh NiCd cells!) and then steadily progressed to 1900mAh, then to 2400mAh. NiMH for powertool started at 2.0Ah in 1997 (our company lauched the first cell with Makita in that year) and are now between 2600mAh and 4200mAh.
Cs is very versatile when making packs because its diameter is 2x its height.. this makes is tessolate very well in packs when you want to make them into cluster packs for drills, saws etc..
This is why RC cars use Cs.. because of Cordless Powertool. The RC car market is an itsy bitsy % on the end of a pin compared with powertool globally..
Personally, i think it went pear shaped around three years ago... when the Chinese started to enter the market. you see up until then, we used the best of the powertool cells (N-1900SCR, N-2400SCR) from the likes of Sanyo and Panasonic. Being japanese the performance was good and the reliability was also good. The chinese have up'd the capacity and voltage but at the expense of reliability.. the japanese are not following the chinese into this niche market because it does not play to their global goals... but it does mean that to be competititve we have to use hand built chinese cells that dont last so long..
dont get me onto batteries.. i have had enough of them now!!!
