Quote:
Originally Posted by tc3_racer_001
this is what ive been waiting for...
is that huge of voltage drop normal?
i hooked up my wattmeter, and measured 10.2v @ 104.6A with a 42 a123 pack, and i was a bit dissapointed, so will all lipos drop this much? (i.e. how much do premium cells drop?)
thanks,
ryan
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Yes, all batteries drop voltage under load. The power and quality of a battery is determined by how much. I assume you have a 4s1p A123 pack? 105A is a 45C discharge..ouch. 2.5V isn't terrible considering, but you need to have a 2P pack for that load.
Here's a enerland based Neu lipo, my 4S 30C 2500mah @32C discharge (~3.1v/cell): This is when I was doing the 60mph passes in my CRT.5.
And here is a A123 pack. A 5s2p pack, 26C @ 2.8v/cell. Remember tho that A123s are lower nominal V, so really a 5S A123 pack is ~=a 4S lipo. Then it equals ~3.5V/cell, which is considered good.
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