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E-Revonut
RC-Monster RC8T
 
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Posts: 2,554
Join Date: Jan 2008
Location: Syracuse, New York (Camillus)
10.17.2010, 03:23 PM

Quote:
Originally Posted by molak View Post
Even if this pack do hold a 150 c discharge...(almost impossible)

WHAT´S THE POINT ??

There´s no motor/ESC that will pull that much Amps on 4s ... Is like killing a cockroach with a V2 missile...
I disagree. The point of a higher C rated battery is that as your current climbs you put more stress on a battery, diminishing it's life cycle. A battery that can handle a very high discharge will not be stressed nearly as much when pulling 150-200 amp spikes if it can handle 900amp spikes. My RC8T truggy on 5s geared for less than 40 had a peak of 167 Amps. Even with good quality cells that I was using (RC-Monster 25/50C) they did get warmer than I would have liked, even though they held about 3.4V/ cell under that load, the heat that they generated did tell me they where getting stressed. If that battery had been a 50/100C it may have been 10-15 degrees cooler because I wouldn't have been stressing it as much.

I doubt that these lipos from MA are 150C constant, that may be their burst C rating, so maybe they are actually a 40C continuous, which would still be a great battery.

As it's already been stated we really need an industry standard for measuring C ratings. Such as it needs to hold 3.4 volts at load or 3.5 or whatever, as long as it's a standardized value we would really be able to make an accurate assesment on the batteries we purchase


RC-Monster RC8T 1515 2.5D/MMM/5s RC-M 4500mah
SC10 MMPro 13.5T 2s NeuEnery 5000mah
RC18T Mamba 25/5400kv 2s lipo + 6s NiMh
   
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