Ambient: 25degC
1800' ASL
101.4 kPa

Thunder Power Pro Lite 5s3pV 6000mAh (two in series)
Plettenberg Xtra 30-10 EVO
APC 21x13WE
Schulze 32.80KA
Neu 5.5mm bullets
each pack has 10-14 cycles

Eagle Tree MicroPower E-logger
2 samples/sec
Recording Amps and Volts (and calculating Watts)

The attached files are the raw recorded data and Amps and Voltage Vs Time graphs. There are four graphs: one for each of my 10s packs. To view the files you'll need the Eagle Tree software: http://www.eagletreesystems.com/Late...beta/setup.exe .

In other news, sell your non-EagleTree wattmeter while you can. My WattsUp meter is going on RCgroups as soon as I click Send. The Micrologger w/ PowerPanel LCD kicks ass.

RCUniverse has silly extension rules, so you'll have to download the data files here:
http://homepage.usask.ca/ajg360/AG%2...0%2DStatic.zip

-Adam

Here's data from four P07 flights.

Ambient:
25degC
1800'ASL
35% humidity
101.3k Pa

FDR data files:
http://homepage.usask.ca/ajg360/July1%2DAG_FDR.zip

The current spike near the end of session four is very interesting to me. I was flying a horizontal at cruise throttle, backed off the throttle a bit and did one positive snap, did _something_ with the throttle (maybe slammed it upwards?), started another snap opposite direction (i.e. two positive snaps, opposite). As I was starting the second snap I heard a hellish noise. I stopped the snap while inverted and went to idle, and headed straight for the runway thinking the motor was falling out or prop was loose. I landed and all seemed OK, so I thought maybe it was an overcurrent shutdown by the Schulze. I get home and check the FDR file, and sure enough the current spiked, no doubt causing the Schulze to cut.

I really like this Eagle Tree unit. If I leave the LCD screen in the plane during the flight, as soon as I land I can look at the screen and it will tell me how much capacity I used. That allows me to fine tune the flight time of my next flights. In the past I had to fly four flights of similar duration, charge up, and try to relate charged capacity with how long I flew that day.
**Edit: Upon recharging the packs with the Thunder Power 1010C charger, I'm seeing that the EagleTree is showing a different capacity used than my charger. The software is showing around 4200mAh, while the charger put back around 4800mAh. Please confirm the calibration and accuracy of your own EagleTree before relying on it to time your flights.**

-Adam

I have edited post #2 with newer data.

Adam,

I'm interested why you are using the 6000s as against the 5300s? Is this a capacity issue?

Regards

Malcolm

My reason is entirely capacity. Only a touch more money for a decent amount more capacity.

These packs are now for sale here:
http://www.rcgroups.com/forums/showthread.php?t=567477

-Adam

I didn't realize when I posted the data that the Eagle Tree software can only be installed if you have a micrpower logger. So, here are images of the graphs.

Hi Adam,
As it turns out, the FDR files are merely space-delimited text files. They import into Excel quite easily, and that allows all manner of post-processing.
later,
Dean P.

My Eagle Tree Micropower unit is for sale here: http://www.rcgroups.com/forums/showthread.php?t=576614

-Adam