ORIGINAL: Swift427


Some would go so far as to say that the C discharge rating is just an arbitrary number. In other words it gives some indication of a batteries ability to discharge more amperage without going over 150 F and hopefully not over 140 F. The thing is that you never know the true discharge ability until you find out how many cycles its good for at 80% of C. IMO, I wouldn't suffer a LiPo to more than 75% of its C rating even if I paid $200 for a first class 3S 3200 20C pack. Then I might even figure the packs are closer to 3000mAh & 3100mAh. But if money is no object and you don't care if you only get 12 performance cycles than GO for it.

.75 x 20 = 15 x 3.0 = 45A (max cont discharge if I expect to get more then 25 cycles) with reasonable care.
.75 x 25 = 19 x 3.1 = 59A (max cont discharge if I expect to get more then 25 cycles) with reasonable care.