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Model Forum / Radio Controlled / Air Models / September 2010



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Optimum LiPo discharge level

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Robert Roland - 18 Sep 2010 17:54 GMT
I seem to remember having read somewhere that LiPos will last much
longer if not discharged by 100% of their rated capacity. What is the
ideal discharge level to balance flight time and battery life?

I fly 10 minutes now, which is only about 65% of the capacity, so I
think I can safely fly a little longer.
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RoRo

Vance Howard - 18 Sep 2010 18:45 GMT
> I seem to remember having read somewhere that LiPos will last much
> longer if not discharged by 100% of their rated capacity. What is the
> ideal discharge level to balance flight time and battery life?
>
> I fly 10 minutes now, which is only about 65% of the capacity, so I
> think I can safely fly a little longer.

I remember reading that you can use 80% of the capacity and still get
decent life span from them. That's what I try to do.

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Tim Wescott - 18 Sep 2010 21:22 GMT
> I seem to remember having read somewhere that LiPos will last much
> longer if not discharged by 100% of their rated capacity. What is the
> ideal discharge level to balance flight time and battery life?
>
> I fly 10 minutes now, which is only about 65% of the capacity, so I
> think I can safely fly a little longer.

The electric control line guys fly on timers, and run the battery down
pretty much the same each time every time, say to plan on a battery
that's 75-80% discharged at the end of the flight.

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Do you need to implement control loops in software?
"Applied Control Theory for Embedded Systems" was written for you.
See details at http://www.wescottdesign.com/actfes/actfes.html

 
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