jkas10

iTrader: (123)

Guys,
I tried to search but didn't find anything other than to throw them away. But, has anyone found a way to un-puff a lipo? Like, maybe cycling a certain way, etc. Any assistance is appreciated.

racer1812

iTrader: (31)

puffed is puffed, simple as that. If after a run it comes down any, great. But if not there's no magic charging method to do so. You can either decide to take your chances and continue to use the pack or "recycle" it to an unknowing eBay bidder..

once you puff, you never go back..

Wild Cherry

Jkas

No promises

balance pack at low amp rate , less then 2 amp..

racer1812

iTrader: (31)

^^^

that will NOT bring the puffing down like you asked. It would simply let you charge the pack without puffing it any further at best.

Mullet1

iTrader: (16)

Stab with a screwdriver













Then buy a new one.

XRated SCT

My revtechs deformed my case but I can squish it and it just feels like air so I assume they swell during the run when hot but the cells go back to normal and the case is stuck deformed

Davidka

iTrader: (86)

The "air" is likely hydrogen trapped in the battery cells. You're playing with fire (a bad one), literally.

racer1812

iTrader: (31)

ok....some battery cases can deform, be it from a puffed lipo that then went down on its own or from simple everyday heat exposure. If you squeeze the case and it's "hard", the cells are puffed. If you can squeeze the case and you can feel a gap before touching the cells inside, likely the case is warped and the cells are fine.

there's really little way to be sure without handling the pack in person..

jkas10

iTrader: (123)

So, the plastic "bag" the cell is wrapped in is sealed, and the puff is from an excess discharge of gas in the "bag"? Is that correct? Can a guy - carefully - relieve the excess gas with a pin hole or something and release the built up pressure?

jkas10

iTrader: (123)

I know, right? LOL!

racer1812

iTrader: (31)

From everything I've heard, on the net and IN PERSON, revetechs are some of the worst packs on the market for puffing.

Ridley

iTrader: (13)

It has been done before

No, it's not particularly safe

racer1812

iTrader: (31)

Like Ridley said, you're correct, the puffing comes from the gas. And it's NOT safe to vent the cell or cells on a puffed lipo.

XRated SCT

yea I can squeeze and feel the gap between the case and cells

racer1812

iTrader: (31)

Then, IMO, that's a case issue and not a puffed cell issue. Left up to you to make the call on what's hidden inside.

a warped case is not an uncommon issue, regardless of brand.