



Question
What is the formula for lipo discharge amps? C ratings and such?
Formula may not be the right word here, but I cant remember how to figure out how many amps my pack can put out. I have a 7.4v 2s 1800mah 10C lipo. Is it just 1.8(1800)x10(10c)? So it can put out 18 amps?





Quote:
 Brian 




Quote:
Also, remember that you should never charge LiPo's faster than 1C. In your case, don't charge your 1.8Ah battery any faster than 1.8A, or else you could seriously damage the battery, or maybe even start a fire. If you have enough time to wait for the battery to charge, then charge it slower than 1C. Charging at .25C can greatly increase the life of the battery.  Brian 




Great, thanks Direwolf. Much appreciated, didnt want to melt down my batt. My new Brushless is the most efficient @ 18amps, and my current power setup with my prop puts out about 17.5 amps. So looks like Im spot on with everything. Just cant wait to fly it now.



Joined Jan 2002
6,595 Posts

Brian, a word of caution: manufacturer's Cratings have proven to be overstated in many cases. Look for your particular LiPo brand in the battery graph vault.
If it's there, the graph will give you an accurate picture of your LiPo's capacity and discharge rate capability.  RD 


Joined Jan 2002
6,595 Posts

For example, see:
http://www.rcgroups.com/forums/showp...89&postcount=1 The information published at pointofsale claims 15C/90%, but the graph reveals only about 40% of capacity discharged @ 15C. 10.5C is about right for this LiPo.  RD 
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