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Old Apr 16, 2012, 01:08 PM
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AKA Terry Till
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Alexandria, VA
Joined Apr 2002
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Originally Posted by Erik v. Schaik View Post
Latest controllers have 12s+BEC which makes one wonder why one should't buy 12s 1350mAh cells. The only reason which puts me off is the KV tolerance which makes it very hard to pick a suitable motor.
-lowering the KV enough for 8+S means going to higher turn windings (more resistance) or heavier motors with lower turns, which I'm sure you know
Don't forget all the added stuff to the cells (balance leads, tape, shrink wrap, battery connectors) tends to add up when using multiple packs.
I figured out I could use 12S 2200mah for a 90mm Midi fan, but the weight of all the cells is actually more than 2 3S 3800-4000mah batteries. Weight-wise, it makes more sense to go 6S or 9S on larger packs.
I have a couple other set ups that I have data on, but it is installed data; not the test stand. I need to charge up some cells, measure and post data.

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Last edited by ex-racr; Apr 16, 2012 at 01:10 PM. Reason: spelling
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