Punctured Lipo Sack

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Hello

Ive punctured a LiPo sack (the grey layer) accidentally when scraping off excess hot glue with a knife.

It emits a distinct smell - is this poisonous?

Furthermore is safe/adequate to repair by simply taping over it and/or applying glue to seal the cut?

Please assist.

Kind Regards,
Derku
Australia

Edited by Derku - 30/Sep/2009 at 3:10pm

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Derku Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum (AU) USERID: 177632 HobbyKing Constituent Joined: 19/Jun/2009 Location: Australia Online Status: Offline Posts: 131	Quote Reply Topic: Punctured Lipo Sack Posted: 30/Sep/2009 at 3:10pm
	Hello Ive punctured a LiPo sack (the grey layer) accidentally when scraping off excess hot glue with a knife. It emits a distinct smell - is this poisonous? Furthermore is safe/adequate to repair by simply taping over it and/or applying glue to seal the cut? Please assist. Kind Regards, Derku Australia Edited by Derku - 30/Sep/2009 at 3:10pm

W3FJW Ron Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Platinum (US) USERID: 63218 Forum Admin Joined: 19/Feb/2009 Location: Tacoma WA Online Status: Offline Posts: 9067	Quote Reply Posted: 30/Sep/2009 at 3:57pm
	I don't think it's poisonous, but since you've opened up a cell, that cell IMO wouldn't be safe to use. Could burn or explode. You could salvage any other cells in the pack and throw that one away.
	*Best Regards* I can only remember half of what I say.... I used to walk on water 'til I found out it was more fun sitting in the boat drinking beer Ron

Asad Members Profile Send Private Message Find Members Posts Add to Buddy List N/A (N/A) USERID: 0 HobbyKing aficionado Joined: 14/Apr/2009 Location: ISB, PK Online Status: Offline Posts: 1224	Quote Reply Posted: 30/Sep/2009 at 6:03pm
	Ron: He is talking about lipo sack, not lipo pack. Lipo sack is the protective bag which is used to prevent lipo fires from spreading if a mishap occurs during charging. To the OP: If the puncture/tear is small in length, it shouldn't really matter. Consider it an additional vent hole, if you will. Edited by Asad - 30/Sep/2009 at 6:15pm

wchiro Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Platinum (US) USERID: 15996 Forum Admin HobbyKing Moderator Joined: 18/Feb/2009 Location: Honolulu Hawaii Online Status: Offline Posts: 1623	Quote Reply Posted: 30/Sep/2009 at 7:24pm
	If you're really concerned with it you could use a dab of silicone sealer to seal the hole. I thought this was what he was talking about..... I consider this a Lipo sack! Now if he said he punctured a lipo cell...well no mistake about that. Edited by wchiro - 03/Oct/2009 at 2:49pm
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W3FJW Ron Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Platinum (US) USERID: 63218 Forum Admin Joined: 19/Feb/2009 Location: Tacoma WA Online Status: Offline Posts: 9067	Quote Reply Posted: 30/Sep/2009 at 7:41pm
	Yes, but, if it releases a "distinct" smell of any kind, I would consider it a ruined pack or cell. If only slitting the covering of a pack, there, IMO, should be no smell other than the air we breath. The smell has to come from somewhere. And it wouldn't come from slitting the covering which is applied after the cells are manufactured and sealed. Safety first and don't burn down the house. Edited by W3FJW Ron - 30/Sep/2009 at 7:44pm
	*Best Regards* I can only remember half of what I say.... I used to walk on water 'til I found out it was more fun sitting in the boat drinking beer Ron

Merlon Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum (NO) USERID: 216398 Bargain Addict! Joined: 08/Apr/2009 Online Status: Offline Posts: 54	Quote Reply Posted: 30/Sep/2009 at 8:08pm
	Just to be clear, you're referring to the Lipo Charge Sack here, right? The charge sack has a distinct smell when new and I can only guess that if punctured a similar smell would escape from between the layers. As with the original smell this one should also subside with time. If on the other hand it's a battery you're referring to, then better safe than sorry: don't use it again.

V0RT3X Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum (SI) USERID: 185606 Bargain Addict! Joined: 11/Mar/2009 Online Status: Offline Posts: 47	Quote Reply Posted: 02/Oct/2009 at 1:58am
	that fiberglass won't kill you

bandit64 Members Profile Send Private Message Find Members Posts Add to Buddy List Gold (AU) USERID: 165382 Newbie Joined: 17/Jul/2009 Online Status: Offline Posts: 15	Quote Reply Posted: 03/Oct/2009 at 10:29am
	if its a sack just put some glue on it if its a pack id consider throing it away

Derku Members Profile Send Private Message Find Members Posts Add to Buddy List Platinum (AU) USERID: 177632 HobbyKing Constituent Joined: 19/Jun/2009 Location: Australia Online Status: Offline Posts: 131	Quote Reply Posted: 03/Oct/2009 at 4:22pm
	Hello all! Thanks for such a huge response! Though I must clarify, I actually mean a LiPo 'pack'? the cells which store electricity :P NOT the safety sack! Excuse the confusion! My mistake with terminology. With that said, Ive sealed the punctured LiPo pack with hot glue and it works fine - im sure its not as safe and I dont recommended it actually. But if anyone has any ideas as to safely salvage a damaged LiPo pack, a single cell, please share. Kind Regards, Derku Australia

supergps Members Profile Send Private Message Find Members Posts Add to Buddy List Gold (IN) USERID: 278910 Newbie Joined: 01/Aug/2009 Location: IN Online Status: Offline Posts: 30	Quote Reply Posted: 04/Oct/2009 at 2:34am
	Like somebody said earlier, throw that cell/pack away It is a fire hazard now. No matter how good it looks/works, it can blow up when you least expect it. Better safe than sorry. If I was you, I'd salvage remaining cells, have a pyro show with the damaged cell :) . Salvaging requires attention, so you dont blow them up in your hands./damage other cells.