Originally Posted by
MC112b
I think we're reaching the upper limit of practicality. We will be needing 36v or 48v systems in a few years.
How many of these 24v 1400w systems will your race facility's 15A electric services going to support? Voltage will have to go up to keep the current down.
If you are talking about rc cars where 2S and 4S packs are used, 12V and 24V power supplies is all you need. Race track electrical services are fine.
It is the heli and planes that are using 12S (6S x 2) and 14S (7S x 2) that are charging parallel on the PowerLabs that need that higher input voltage for the high cell counts. A single 3D heli flight on a 12S pack will last only 5min or less, thus the need for parallel charging of large packs at fast times.
Here is a guy charging twelve 6S 4000mAH packs at once on his PL8.
http://www.youtube.com/watch?v=JVsLfKgT50k
Most chargers that racers use won't have that capability unless it is a PL6/8 or iCharger 4010 Duo.
http://www.youtube.com/watch?v=W9MrGF-W4tM