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Unread 02-24-2016, 09:06 AM   #71
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Default Re: Lithium Conversion (leaf battery)

thanks marianol.

I just got my last two modules in yesterday.
So I am waiting for the copper bus bar to show up so I can start drilling, cutting and connecting them for a 3 parallel module setup (currently in a two module parallel setup).

According to UPS, it should be here today. YAH!!!

Then it will be time to tear down the system, reconfigure, charge and reinstall.
Then change the throttle back to original for full power.

Love the plots. I will take another data set after the reconfigure.
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Unread 02-24-2016, 12:13 PM   #72
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Default Re: Lithium Conversion (leaf battery)

Cool!!

The tool I used for the plots is Spotfire (http://spotfire.tibco.com/) I used the cloud version http://spotfire.tibco.com/products/spotfire-cloud but they also have a Desktop version http://spotfire.tibco.com/products/spotfire-desktop but I can't use it because it runs only in Windows.

Is really easy to use I just took me 2 minutes to pull those charts.
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Unread 02-24-2016, 03:11 PM   #73
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Default Re: Lithium Conversion (leaf battery)

Never heard of it before. I will have to check it out. I currently use Matlab or Octave for this kind of plotting but I like your plots better than mine.
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Unread 03-04-2016, 12:46 PM   #74
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Default Re: Lithium Conversion (leaf battery)

next update...
Well I purchase the two extra modules and reconfigured the batteries in a
12S6P configuration, i.e. 50V at 180Ah.
I reset the throttle back to original (100%) and let it rip. Yikes it still moves like a scalded cat, barks the tires on asphalt pavement....

So I ended up settling of 75% for FWD throttle and 30% reverse throttle.
GPS max speed is ~19mph which is good, and throttle is nice w/o and controlled being crazy jerky.

I attached the log file for those that want to look at the results.
Now to see how many miles I can go on a charge, (thinking 50+)
Attached Files
File Type: zip Monitor48vrev1.zip (5.0 KB, 0 views)
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Unread 03-04-2016, 07:56 PM   #75
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Default Re: Lithium Conversion (leaf battery)

Quote:
Originally Posted by rottie View Post
Now to see how many miles I can go on a charge, (thinking 50+)
Yes....BUT....can you do that thru swamp water WHILE being chased by a 15' gator for ten of those miles? Hey.....this "stuff" is important!! The upper 3% of the lower 5% of YOUR high school graduating class may want to know this some day!!
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Unread 03-04-2016, 08:00 PM   #76
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Default Re: Lithium Conversion (leaf battery)

Well, IF I water proofed the battery compartment with the controller, then maybe?

Besides, that is why I have a boat for those deep water crossings.
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