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HelicopterRadio - Servo - Gyro - Gov - Batt › Lipos puffing. Normal? Please help!
10-19-2009 04:07 PM  8 years agoPost 1
Randog

rrApprentice

Santa Clarita,California,U SA

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I am looking for a little advice on my batteries. I have an Outrage 3000 MAH 6s and Flight Max (zippy) 2650 MAH 6s and 2 Thunder Power 2650 MAH packs for my Trex 500.

Both my Outrage and my Zippy packs are puffing after flying. I am very careful in monitoring the packs. I only put back around 72% to 74% MAH. I use a TP 1010 charger and a 210 balancer and monitor the cell prior,during and upon completion. They all balance and charge fine with no cells out of the normal ranges.

My question is after a flight the battery temperatures are warm and with in the normal range. But puffed up a bit and feel soft or mushy at both ends. My Thunder Powers dont puff at all.

Is safe to keep flying puffed packs as long as they maintain there power through out the flight and charge and balance well? Or are they unsafe and done.

Thanks Guys.

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10-19-2009 09:58 PM  8 years agoPost 2
MR SLOWFLOW

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N.J/N.Y

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i wouldnt fly em, capacity and discharge issues.

aka MR AIRBRUSH

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10-19-2009 10:25 PM  8 years agoPost 3
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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capacity and discharge issues.
What the heck does that mean?

Makes about as much sense as Bill Murray's rant in Animal House:

"Over? Did you say "over"? Nothing is over until we decide it is! Was it over when the Germans bombed Pearl Harbor? Hell no! "

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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10-20-2009 05:59 PM  8 years agoPost 4
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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Helloooooooooooooooooooooooo................

I•s a•n•y•b•o•d•y o•u•t t•h•e•r•e ????????????

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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10-20-2009 06:17 PM  8 years agoPost 5
rexxigpilot

rrProfessor

Florida

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If I stopped using every slightly puffed Lipo I ever had, I would go broke buying new batteries! Fly 'em like you stole 'em. You may lose a bit of power or capacity, but they likley have much useful life.

I found Thunder Power batteries to be the least likely to puff too. Zippys puff easily. I can only get 50-75 flights before they're toast, but they are cheap.

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10-20-2009 06:58 PM  8 years agoPost 6
Randog

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Santa Clarita,California,U SA

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Hey thanks rexxigpilot,

My only concern is I believe that they are puffing a bit beyond the norm. But I have always in the past used Thunder Power with no puffing at all.

I will keep flying them but at the same time keep a close eye on them.

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10-20-2009 07:52 PM  8 years agoPost 7
philthewrench

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Westchester Co. NY

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Makes about as much sense as Bill Murray's rant in Animal House
Who?

Phil

... and now my impression of a lawn dart .......

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10-20-2009 07:59 PM  8 years agoPost 8
HeliFisher

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Verdi , Nevadafornia

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Bill Murry's not in Animal House!

Kevin Bacon was though. So was John "the talented brother" Belushi. R.I.P. John!

The less a man makes a clarative statement, the less likely he is to look like a fool in retrospect.

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10-20-2009 09:10 PM  8 years agoPost 9
Rockohaulic

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Canyon Country, CA, USA, 3rd Rock from the Sun

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Makes about as much sense as Bill Murray's rant in Animal House
Who?
Nice catch!

I was thinking of Bill Murray's rant in Ghost Busters:

"Human sacrifice, dogs and cats living together... mass hysteria! "

and got the actors confused.

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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10-22-2009 03:09 AM  8 years agoPost 10
jbdww

rrElite Veteran

Round Rock, Texas

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I have flown a lot of batteries that feel soft, but if the swell, then do not fly them. Swelling is where the wrapping around the battery is stretching.

Skids Up
http://www.jbdww.com
http://twitter.com/jbdww/

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10-23-2009 02:36 PM  8 years agoPost 11
chopper_crazy

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Delphos, Ohio

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I notice light puffing after flying a battery real hard but nothing that doesn't go back to normal in 20 minutes or so. never a single issue

It's a complex, costly, glow powered anti-gravity machine!

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10-23-2009 02:49 PM  8 years agoPost 12
Randog

rrApprentice

Santa Clarita,California,U SA

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Thanks for the help guys,

My batteries do come down a bit after they cool but they still have dont feel firm like my Thunder Power packs.

I am going to continue to fly the packs but keep a close watch on them.

I wish that Thunder Power would get wise and lower the costs of there batteries. With other brands such as Zippys at not just a little but allot lower in cost I wonder how the name brand companies are going to survive.

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10-24-2009 02:47 AM  8 years agoPost 13
bexusflexus

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Tulsa, OK

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A good way to check the properties of the suspect batteries are to fly them on a data logger and watch the voltage. If the voltage is erratic and the battery is puffing then you "might" have a problem. If you don't have access to a datalogger then you can discharge the battery and recharge it to make sure it puts back the proper mah. If it does not you "might" have a problem. Also, during the charge cycle make sure the battery does not get hot. If it fails on all of these levels then that is enough evidence for me to retire it or use it on the bench to test servos or something.

I've flown with many puffed batteries without incident. However, I'm not advocating this. You just have to watch for the warning signs and use common sense. Sounds like you are already doing this.

even not doing anything would have been better than nothing...

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10-25-2009 12:36 AM  8 years agoPost 14
Flyinhelis

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USA - So. Cal. the OC

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Warm Puff batteries are fine to fly.

Very Hot puff batteries need to be thrown away.

Just monitor the temp and use common sense, if you can't put your hands on the battery for 5 sec. after flight then I would not use them.

My 2 cents.

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10-25-2009 06:31 AM  8 years agoPost 15
jschenck

rrProfessor

La Vista, NE.

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if your packs are puffing from the flight subtract a minute from your flight timer. Regardless of what they are rated at if they are puffing you are over drawing them. Also measure the voltage as soon as you land. If they are below 3.5V/cell then they are too low. I personally don't like to see below 3.7V/cell.

This is easily one of the most useful items in my 'E' flight box

http://hobbycity.com/hobbycity/stor...ry_Monitor_2-6S

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10-25-2009 12:54 PM  8 years agoPost 16
nivlek

rrProfessor

Norfolk England

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I have version 1 of this :
http://hobbycity.com/hobbycity/stor...cs_meter_2S~6S_(Version_2)

It can also be used on-board to record the lowest voltage per cell during flight .

At the end of the day , it gets dark .

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10-26-2009 10:18 PM  8 years agoPost 17
Randog

rrApprentice

Santa Clarita,California,U SA

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I do monitor the cells after flying prior to charging with my 1010 T/P charger. I never drop below 3.7V/ cell.

Thats what bring up my concerns with my Zippys and Outrage vs my Thunder Power packs.

I need to buy 4 more 6s packs (Two 5000 MAH and Two 2650 MAH) I dont want to spend the higher costs for the T/P packs but at the same time are the cheaper packs still worth the price knowing they are going to puff a bit and most likley have a shorter life span.

Sheesh, maybe I should just stay with Nitro!

Thanks for all of the great advice guys.

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10-26-2009 10:23 PM  8 years agoPost 18
HybridHeli

rrApprentice

East Texas lawman

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Have they ever been in a crash? Gone below 3.2V per cell?

A puffed pack is a sign that the condition of the LIPOs are deteriorating.

__________
nothing automatic about autorotations man..

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10-26-2009 10:33 PM  8 years agoPost 19
Randog

rrApprentice

Santa Clarita,California,U SA

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HybirdHeli

No never below 3.2V/C,that is where my frustration lies. My Zippy only has 4 break in flights and 10 full 6 minute flights at 100% flat line on my Trex 500 with no crashes. The outrage has about 25 to 30 flights. No crashes.

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10-26-2009 11:11 PM  8 years agoPost 20
Rockohaulic

rrElite Veteran

Canyon Country, CA, USA, 3rd Rock from the Sun

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No never below 3.2V/C,that is where my frustration lies. My Zippy only has 4 break in flights and 10 full 6 minute flights at 100% flat line on my Trex 500 with no crashes. The outrage has about 25 to 30 flights. No crashes.
Well obviously you're not pushing it hard enough to fly so long without crashes!

Muahahahahahahahahahahaaaaaaaaaaaaaaaaaaaaa

Saturday morning I flew my helicopter in my pajamas
How it got in my pajamas I'll never know

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HelicopterRadio - Servo - Gyro - Gov - Batt › Lipos puffing. Normal? Please help!
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