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BrianG · **Eagletree Calibration -** 06.29.2009, 10:32 PM

I picked up an Eagltree V3 e-logger (thanks Sower!) and did a little playing around to see what it could do. I hooked up some load resistors to an Elite 3s 3.3Ah pack to get some readings and was puzzled by the results. My 0.75 ohm resistor load was not producing the current calculated for the voltage displayed. Also, the battery voltage was not quite right either.

Turns out the voltage was displaying ~0.5v than it really was, and the current reading was displaying ~2A lower than it really was. I verified using my charger as a voltmeter and my Fluke meter in both voltage and current modes.

This was corrected by using the zero-calibration and V/A calibration functions of the ET software. Now, everything works perfectly.

Just a heads-up to others with an ET device so that you get the right readings. Obviously, you'd need another accurate form of measuring to get the correct readings to calibrate.

	(#1)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	Eagletree Calibration - 06.29.2009, 10:32 PM I picked up an Eagltree V3 e-logger (thanks Sower!) and did a little playing around to see what it could do. I hooked up some load resistors to an Elite 3s 3.3Ah pack to get some readings and was puzzled by the results. My 0.75 ohm resistor load was not producing the current calculated for the voltage displayed. Also, the battery voltage was not quite right either. Turns out the voltage was displaying ~0.5v than it really was, and the current reading was displaying ~2A lower than it really was. I verified using my charger as a voltmeter and my Fluke meter in both voltage and current modes. This was corrected by using the zero-calibration and V/A calibration functions of the ET software. Now, everything works perfectly. Just a heads-up to others with an ET device so that you get the right readings. Obviously, you'd need another accurate form of measuring to get the correct readings to calibrate.