Hi guys,
This is the document for 3DR Iris battery: http://3drobotics.com/wp-content/uploads/2014/01/extra-battery-document-v2.pdf
The ratings for the battery are 3s / 11.1V / 3500 mAh / 30C (105A)
1. I'm not sure I understand this standard discharge rating. 30C means the battery will discharge fully in 1 hour / 30 = 2 minutes? So the battery will be drained in 2 minutes? Except it doesn't...
2. The Iris is advertised as having 10 minutes flight time. So if I wanted to increase this flight time to say 20 minutes I would have to double the discharge from 105A to 210A? Is that correct? So I would have to put another 3s cells in parallel with the original 3s to make a 3S2P pack?
Thanks a lot
Replies
and no, the discharge rate is more than good enough, in fact, if you purchase 7Ah 15C battery , it will still be enough, because 7Ahx15C == 3.5Ah*30C
30C is the maximum continous discharge rate - it says that the battery will handle up to 30x3,5A current. It does not say that you will use that much.
If you can fly 10 minutes at a certain capacity*cellcount , doubling the batteries, will not fully double the flight-time - because you also need to carry more.