Anybody flying WITHOUT puffy lipo's ? - Page 4 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 12-03-2011, 05:51 PM   #31
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Re: Anybody flying WITHOUT puffy lipo's ?

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As a new electric flyer, this is all a big help.
The variations of experience and theories, and anxiety,
reminds me of "the rending of garments and gnashing of teeth"
we went through with the care and feeding of nicads, back in the 70's.
We had tons of trouble with them.
It must be that nicads are better now.
Can we look forward to better lipos ?
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Old 12-03-2011, 06:39 PM   #32
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Re: Anybody flying WITHOUT puffy lipo's ?

Modern lipos are pretty well developed. Most people ran into trouble in the early days because they failed to balance charge the packs.

It takes very little to take proper care of lipos. Don't over discharge them. Dont store them fully charged.
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Old 01-05-2012, 12:10 PM   #33
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Re: Anybody flying WITHOUT puffy lipo's ?

Interesting Thread. I fly a parkzone wildcat and charge with the stock charger. I land about 2 min before lvc. Should I just leave em like that for storage or what? The charger has nothing except a light that blinks for charging and solid for charged. And yes, I know I need to buy a better charger.
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Old 01-05-2012, 12:28 PM   #34
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Elec Re: Anybody flying WITHOUT puffy lipo's ?

IMO, the first purchase should be a Wattmeter. It is considered standard safe proceedure to store lipos at 3.8 volts in a cool, dry place. You will only Know what the remaining voltage is in your battery by testing it, either with a voltmeter or our std tool, a wattmeter. Turnigy (Hobbyking has a 130A unit for like $25)
And yes, get yourself a better, balancing charger asap! This will go farther to prevent problems than anything else you can do. Check out the I Charger's at Progressive Not esp cheap, but will allow big expansion as you get into electric flight, like parallel charging of multiple batteries ( up to 6). FWIW flytwice
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Old 01-05-2012, 01:41 PM   #35
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Re: Anybody flying WITHOUT puffy lipo's ?

Beside the fact that you really need a good (or at least reasonable) charger if you want to continue with electric power. Charging immediately after a flight and storing for 7 days will not cause this issue this will only effect the life of the batteries and how much charge they can hold.
As long as you did not over discharge or over heated the batteries you should not have puffed batteries and you should talk to Great Hobbies and return them.
I had two of these (Great Hobbies brand) a while ago that had puffed and I used a Thunder Power Charger, monitored with a Wattmeter and measured all the possible parameters and eventually returned the batteries and got a refund.
Do you have other batteries that are used in this plane which did not Puff?
If you can not return the batteries and they are only slightly puffed (mushy feel) you can put them in the freezer and this will shrink them a bit but again only if this is not a sever problem.
I did see quite a few guys flying with slightly puffed batteries but this is really not the safest way to go. The problem is that the chemical reaction inside the Lipo generated gas and since the pack is sealed there is little that you can do beside puncturing the pack and re-sealing which I would not suggest if you are not 100% sure you know what you are doing.
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Old 01-10-2012, 10:06 AM   #36
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Re: Anybody flying WITHOUT puffy lipo's ?

Well I checked my batteries after a flight. One had the cells at 3.79 each and the other at 3.80 so I guess they are just right for storage after a flight.(I land a couple minutes before LVC)
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