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Jan 13, 2007, 12:32 PM
Glenn
wellington53's Avatar
Discussion

Found out in a hurrythat lipo's are fradgile!


Been using nicads for years and recently (about a fortnight) swopped to lipo's.
A glitch crashed my spitfire and now my new TP 3C is punctured and smells.
I'll buy another lipo but will also stop useing GWS micro receivers.
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Jan 14, 2007, 01:11 PM
Glenn
wellington53's Avatar
Well Iv'e left my dammaged 3 cell battery outside for 2 days now and nothing has happend yet. When I squeeze the dammaged area you can see fluid but it does'nt drip out but it smells. One cell is good. What do I do next.
Jan 14, 2007, 01:15 PM
Master of 1 point landing
Quote:
Originally Posted by wellington53
Well Iv'e left my dammaged 3 cell battery outside for 2 days now and nothing has happend yet. When I squeeze the dammaged area you can see fluid but it does'nt drip out but it smells. One cell is good. What do I do next.
soak in salt water and toss.
Jan 14, 2007, 01:18 PM
Southern Pride
everydayflyer's Avatar
Quote:
Originally Posted by ImaBiggles
soak in salt water and toss.
That is not a reliable means to discharge a LiPoly.

https://www.rcgroups.com/forums/show...3&postcount=27
Jan 14, 2007, 02:33 PM
Glenn
wellington53's Avatar
So can't even salvage the cell that insn't punctured?
Jan 14, 2007, 02:50 PM
Space Coast USA
hoppy's Avatar
Quote:
Originally Posted by ImaBiggles
soak in salt water and toss.
Testing has shown this does not necessarily work.

https://www.rcgroups.com/forums/show...3&postcount=13


"So can't even salvage the cell that isn't punctured?"
You can try to save the remaining cell if it isn't damaged but what would you do with it? Don't set it on fire during dis-assembly.
Jan 14, 2007, 02:57 PM
Glenn
wellington53's Avatar
How about adding it to a 2 cell equivilent to make a 3 cell.
Jan 14, 2007, 04:33 PM
Registered User
Joe 1320's Avatar
Quote:
Originally Posted by wellington53
So can't even salvage the cell that insn't punctured?
Sure you can. The biggest problem would be using it. You'll either need to use it as a single cell in a low voltage application or obtain a new cell to pair it with. The problem with the latter is that the cells come matched to begin with, now you have one used cell that will be difficult to match with a new one..... charging and discharging at equal rates may be a problem, a balance charger may help in that circumstance. It's going to be tough to justify trusting it in the air.

It's much safer and easier to take a bad cell out of a 3 cell pack and turn it into a 2 cell than to do the reverse.
Jan 14, 2007, 05:18 PM
Electric Hippy
Quote:
Discussion - Found out in a hurry that lipo's are fragile!
This is where A123's are good. I lost a brand new $160 pack because of a glitch.
That was on a ducted fan doing 100mph 4' off the deck. The only other thing to break was a servo gear.


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