[Skidz]

Hi All,
Just a simple one. If I know the current draw of my plane and the capacity of the battery, is there a simple way to calculate flight time?

eg My plane draws 16amps, and I have a 1800mah battery, how can I calcualte how much flight time I would get?
Thanks
Mick

Mick, use the Eagletree logger I loaned you. You can plot the whole flight (or multiple flights on a single log file and separate them later). You can use Volts on the left (x) axis, Amps on the right (x) axis and cumulative mAh on the bottom (y) axis. it will also give you average Amps and average Volts. That will give you the information you need to compare against battery discharge guidance posted by Drew/Kizza.

There is no absolute answer as current draw is never linear and predicatable.

Try different flights and check out your data. You can also save the chart view as a .jpg file and post if you want others to comment on your data plots.

D.