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Old Mar 27, 2011, 01:52 AM
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gewiens's Avatar
Canada, MB, Niverville
Joined Apr 2008
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Nano Tech 4000mah 45c 4s smashed

Put this in a pulse25 today and wing ripped off in flight and plane dived in. Batt was crunched but no smoke or swelling. I am not dumb to the lipo cautions but i actually flattened it out over a 5hr period, re attached the 1 balance plug lead that ripped off and it was still showing 4v per cell with an un balanced voltage of 9 between all cells. I have now recharged it and everything is like a normal batt. Is this not an odd thing for a lipo? This thing appears that it wants to keep on going. No leaks or anything that would normally come from a batt that just hit the dirt at 80+MPH.
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Old Mar 27, 2011, 02:09 AM
Dude, I do fly all day long!
rcalldaylong's Avatar
San Jose, California
Joined Dec 2007
5,846 Posts
Quote:
Originally Posted by gewiens View Post
Put this in a pulse25 today and wing ripped off in flight and plane dived in. Batt was crunched but no smoke or swelling. I am not dumb to the lipo cautions but i actually flattened it out over a 5hr period, re attached the 1 balance plug lead that ripped off and it was still showing 4v per cell with an un balanced voltage of 9 between all cells. I have now recharged it and everything is like a normal batt. Is this not an odd thing for a lipo? This thing appears that it wants to keep on going. No leaks or anything that would normally come from a batt that just hit the dirt at 80+MPH.
4000 mah 4S would make some nice firework. I'm speechless...I won't even say anything else.
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Old Mar 27, 2011, 02:13 AM
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Canada, MB, Niverville
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Yup! I know what your sayin. Going to do just a tad of static testing before it goes up in the air again. Fun to break the rules though if it turns out to be fine. What the heck, i'll be the guinny pig.
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Old Mar 27, 2011, 08:05 AM
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Haralson County GA. USA
Joined Oct 2004
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IMO you should have discharged it to zero and put it out of its' misery.

I have read of children doing such things with LiPolys but I do not exspect children to be as responcible as adults.

You are placing everyone and everything around you at risk.

How fragile is a LiPoly?

http://www.rcgroups.com/forums/showp...13&postcount=1

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Quote:
The other accelerator is the presence of "hangar rash" on the cells due to continuous handling and ding marks that cause salt crystals to start forming at pressure points. This is the primary reason for using IMPAD around packs to protect against impact. In other words, avoid the temptation to scrape a thumbnail over that envelope to see if it springs back!
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Last edited by everydayflyer; Mar 27, 2011 at 08:15 AM.
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Old Mar 29, 2011, 10:43 AM
www.gravityhobby.net
Joined Mar 2011
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Hi everydayflyer,

Can I consult you on Nano Tech battery? How about this battery. What's the difference between nano tech battery and normal battery. I consult you because I think you may test it. I read your many posts and know that you are familiar with the battery.
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Old Mar 29, 2011, 11:06 AM
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Canada, MB, Niverville
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These batts seem to put out alot more power than regular ones. In the plane i had it in i could tell the climb rate was much better. Not much decrease in overall power during flight until the end either.
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Old Mar 30, 2011, 06:45 AM
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lipoflyer's Avatar
Australia
Joined Nov 2010
2,876 Posts
your brave. i've had batteries that suffered much less damage that that catch fire in my hand after what seemed like a bump. i had time to chuck it and move away from the smoke.

each to their own.

btw, have you ever had a lipo catch fire before.?
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