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HomeAircraftHelicopterMain Discussion › Plotting a discharge curve
03-09-2008 10:11 PM  10 years agoPost 1
kcass518

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Manhasset, NY - USA

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Can anyone point me in the right direction? I did a SEARCH, but can't find what I'm looking for.

I want to plot a discharge curve for my NiCds and LiPos, but don't know the easiest way to do it. I tried hooking my battery up to the "Source" side of my Eagle Tree and a Sirius Super Test to the "Load" side. After cycling the battery and downloading the EagleTree, the results didn't make any sense. AMPS was zero and Voltage was 5.3 volts continuous except for a couple of 5.36 volt spikes. I know I used to take a loaded voltmeter and took readings every 15 minutes, but that seems tedious considering the EagleTree should be helping me out. What am I doing wrong? Can you point me to a thread that will help?

Thanks!

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03-09-2008 10:15 PM  10 years agoPost 2
Dood

rrProfessor

Wescanson

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You want to make something that looks like this?\

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03-10-2008 04:28 PM  10 years agoPost 3
kcass518

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Manhasset, NY - USA

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Yes. I'm assuming that the curve would be different for each battery and load condition. I figured out part of my problem - the Eagle Tree is rated at 5v and above, so a 4 cell nicad won't work very well. Even so, I'd like to know more about my 5 cell packs, and want to be able to compare them to, for example, Eneloops or the similar batteries Wal-Mart is selling. I really want to know how their discharge ability compares with NiCds and NiMH's, etc.

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