ThreeJsDad
Well-Known Member
How many ignites do you folks think I can do with a 3S 850mah battery if i am flying with Estes igniters and no clusters, all LPR's.
Say you source 1A for 0.2S per flight. That is 200maS per flight. Your capacity is 850maH as stated. So you have:
850maH/200maS/flight*3600S/H=15,300 flights.
Actually, a 25C pack can (if the rating is honest) deliver 25x the capacity number of the pack.Or to look at it another way, you can safely discharge the pack in 60/25 minutes - 2.4 minutes.C = Max constant current discharge rate. So a 25C pack can pump out 25A without killing itself.
Actually, a 25C pack can (if the rating is honest) deliver 25x the capacity number of the pack.Or to look at it another way, you can safely discharge the pack in 60/25 minutes - 2.4 minutes.
In the case of the OP's 850 mAh example, 25C would be 21.25A. That also, of course, depends on the rest of the circuit/load.
As a practical matter, the continuity and arming indication (lamp/LED/buzzer/whatever) will play into this.
I will say this: I have a 3s 1250 mAh pack in my Estes PSII controller and I can fly a whole season without charging it, and this includes using it for composite motors, not just using Estes igniters/starters.
Actually, a 25C pack can (if the rating is honest) deliver 25x the capacity number of the pack.Or to look at it another way, you can safely discharge the pack in 60/25 minutes - 2.4 minutes.
In the case of the OP's 850 mAh example, 25C would be 21.25A. That also, of course, depends on the rest of the circuit/load.
That would do it....Yeppers, I stand corrected. I have 2 1000mAh packs and was thinking in terms of those packs. Ooops....
Those papers presume I understand all of this..... I guess I will make sure I have extra batteries.
How many ignites do you folks think I can do with a 3S 850mah battery .
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