How To Measure Amp Draw On Battery. What you need is the battery capacity usually expressed in Amp-hours. You will sometimes read that to measure current you need to splice the meter into the circuit.

Reading the AMP meter. There are several different readings you can select on the multimeter when reading amps. You can get a good estimate of the AVERAGE amp draw just by flying your model starting with a fully charged battery and flying until the battery is discharged.
Disconnect the AC power source.
But when you are skilled enough to read your charger amp meter it will extend the battery life. And you dont need a meter to do this. It is relatively easy to measure current using a digital multimeter. Assume that you have an 8cell 600mah battery in your plane and you are able to fly 5 minutes.
