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HomeAircraftHelicopterMain Discussion › Should I still fly this battery?
01-12-2009 09:16 PM  9 years agoPost 1
RyeGuy83

rrApprentice

Crest Hill, IL - United States

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Dear Readers,

The battery shown was in my E-Flite Blade 400 when it crashed. There is a dent along the top side of the battery, and some torn shrinkwrap... but it still looks mostly intact. Do you think it would be safe to charge the battery back up and continue to use it, or just part with it and throw it away.

If you think I should keep it and try to re-use it again... what is the safest way I can attempt to charge it and use again? I am guessing I should only charge it at 1C for the first few times I use it, to make sure it still charges correctly. Any help and advice would be great. Please see the pics and link to vid below.

Video

~RyeGuy83

AMA Member #914650
E-Flite Blade mCP x
Gaui Hurricane 425
HK600 GT FBL

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01-12-2009 09:45 PM  9 years agoPost 2
westwindpilot

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Glendale, AZ

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I would keep using it. But do not let it out of your sight when charging it. and when you are not using it put it in a fire safe box. or something fire proof.

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01-12-2009 09:49 PM  9 years agoPost 3
jackheli

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Vancouver - Canada

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Nope. No way!

That is a toss. Put it in salted water for 2 weeks and into the garbage.

Just picture your heli in flames and you have your answer. It could explode on discharge as well, you know...

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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01-12-2009 10:03 PM  9 years agoPost 4
DSW

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Oviedo, Florida 32765

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Send it back to manufacturer, might get a replacement at a reduced price.

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01-12-2009 10:03 PM  9 years agoPost 5
RaptorMan23

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Sioux City, IA

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Im not even an electric guy an I know that I wouldnt use that battery. Its not worth it bud, toss it. It could cost you a helicopter or worse, someone getting hurt

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01-12-2009 10:12 PM  9 years agoPost 6
Heli 770

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USA.

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If you can't get a replacement for it. Depending how new it is and you know how, make a 2S out of it.

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01-12-2009 10:18 PM  9 years agoPost 7
merlin3

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dayton, ohio

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I'd use it but it's up to you whether it's worth the risk, hard to tell from the pictures really.

Justin - Team Horizon, Team Byron
2-700x, Trex 700n, small helis

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01-12-2009 10:18 PM  9 years agoPost 8
Steff Giguere

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St-Eustache, Quebec, Canada

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Sorry but I would not reuse it.

Team Synergy, Rail blades, Team Scorpion, V-Team

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01-12-2009 10:18 PM  9 years agoPost 9
JRjoe

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Jonesville , IN USA #1

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Nope. No way!


JRjoe.....
Indoor plumbing??? No, we don't need that!!!

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01-12-2009 11:17 PM  9 years agoPost 10
TankDirt

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Illinois

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Dang dude lol,I thought you said you bought "some" blue upgrades...Nice!

And I would toss the battery,It looks pretty intact but its quite puffy...try and get it replaced or just put it in saltwater for about 2 weeks then trash it.

-Cody

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01-12-2009 11:19 PM  9 years agoPost 11
brcg123

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Wagoner OK USA

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as long as the interior packaging is in tact and not tore open, then it is alright to reuse the battery, make sure the tear in the covering isn't all the way thru so the battery can leak anything out. charge the battery in a pan or bucket and if it doesn't poof up when charging it will be Ok.








Trex700N, Trex600N, Raptor70, RaptorTitan, GMPCrickett, Visa

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01-12-2009 11:56 PM  9 years agoPost 12
what_the_helli

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cookeville, tn USA

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Its hard to tell from the pics exactly what damage has been done.

If you decide to try it charge it OUTSIDE on the concrete and away from everything. If you have not seen a lipo fire look it up on youtube, I promise you don't want one in your house!

if it is just one puffed cell I'm with Heli770 trash the bad cell and keep the others...

I put the fun in dysFUNctional :)
Team KBDD & Funding by TnPrintMasters.com

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01-12-2009 11:59 PM  9 years agoPost 13
LaurenceGough

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UK

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Looks puffed, as someone suggested put it in salt water for at least a week and then throw it away.

I had a perfectly good lipo (stock Falcon 3D lipo) go MEGA puffed in the space of a few days on it's own (at 3.8v p/c). That was scary, got rid of it like I explained above pretty fast!

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01-13-2009 12:03 AM  9 years agoPost 14
Heli 770

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USA.

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I think that outer cell is bent from the impact and not pregnant.

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01-13-2009 12:12 AM  9 years agoPost 15
what_the_helli

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cookeville, tn USA

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I myself have flown "bent" and/or "deformed" cells from an impact with no issues, but not a puffed pack.

So is it deformed or puffed?

I put the fun in dysFUNctional :)
Team KBDD & Funding by TnPrintMasters.com

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01-13-2009 12:53 AM  9 years agoPost 16
TaleGunner

rrElite Veteran

Deer Park WA

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Fly it until it fails or burns

I personaly would not fly it or charge it

CRASH! GLUE! REPEAT!
Spectra-G, Ion X-2

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01-13-2009 12:58 AM  9 years agoPost 17
thenewguy

rrElite Veteran

Corvallis, Oregon Where there is liquid sunshine!

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You will know when you cannot use the battery any more.

1) Your house burns down while trying to charge the battery.
2) You aircraft burst into flames while flying it.

I would choose not to use it.

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01-13-2009 01:07 AM  9 years agoPost 18
tchavei

rrProfessor

Portugal

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I would reuse it under certain conditions.

1. Sniff it all around. If it smells like sweet at any spot. Dispose of it IMMEDIATELY.
2. NEVER again let it charge inside the house. NEVER
3. NEVER let it unattended during a charge/discharge. NEVER
4. Charge it at C/5 for the first time and never go beyond 1C from that point on.
4. Accept the consequences if, somehow, the bird suffers damage during the use of that battery. If you can live with it without remorse, go for it.

Personally I would do it, I mean, we're talking about a Blade 400 and not an Avro or something like that.

I can understand people not wanting to risk it but in the end, its up to you.

Tony


--------------------
"Perfection and patience usually walk side by side..."

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01-13-2009 02:48 AM  9 years agoPost 19
RyeGuy83

rrApprentice

Crest Hill, IL - United States

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Thanks for the advice.
Thanks for all the comments. To those who commented on it being puffed.. it's actually not puffed at all. The top cell has been moved over from the impact of the crash. I don't believe it's actually puffed... just shifted over. The red and white wrapping is definitely torn, but looks like it has clear wrap underneath it and is intact. I think I will toss it though. My 400 and all the upgrades done to it are worth too much to waste on a $35 battery. Thanks again for the advice.

Just curious.. What will the saltwater do?

AMA Member #914650
E-Flite Blade mCP x
Gaui Hurricane 425
HK600 GT FBL

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01-13-2009 02:57 AM  9 years agoPost 20
dkshema

rrMaster

Cedar Rapids, IA

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Disposal of a LiPo involves discharging it, then submerging it in a salt water bath for a length of time. Some instructions say overnight, some instructions say a couple of weeks. Don't think anyone has found the sweet spot for the salt water bath time. Some instructions even go as far as having you puncture the cell's individual packaging (after they are fully discharged) to let the salt water into the individual cells. This last step presumably forms lithium salts that are not reactive to water or air, and rendered harmless for disposal.

The salt water is conductive (as distilled water is NOT). Placing the discharged pack into the salt water bath lets it discharge completely.

Once it has been in this state for a few days, it should be safe to pitch out in the trash.

-----

As for your pack, my first ever LiPo was a Kokam 3S, 2000 mah pack, in a Trex 450. One of my first flights in the driveway in the dead of winter resulted in a crash that bent the three-cell pack in the middle, at about a ten-degree angle. I carefully straightened the pack out by hand, and kept a very close watch on that pack for the rest of the day, to the point of making sure it wasn't beginning to swell, to heat, or otherwise look like an imminent version of Dante's Inferno. I proceeded to charge it, and fly it. I got about 100 charge/discharge cycles on that pack before it finally pooped out on me. It got the burial at sea last January, along with two of my original TP 2100's.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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HomeAircraftHelicopterMain Discussion › Should I still fly this battery?
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