Hi Guys

Lets get some info about why lipos balloon and everyones thoughts on how the problems can be fixed .

I already know why they balloon after 1 year of study let's see what other's think .

ok let's get the info flowing

so they can float?


btw its called puffing, and they do that because something with the chemical inside them that makes them...

internal pressure and heat disapation would be my guess. But the only lithium polymer battery i own is attached to the computer i am typing on.

10. Built in indicator of needing to be replaced
9. Over discharging.
8. Dummy detector.
7. Misuse/Overcharging.
6. makes market for lipo sacks. Conspiracy.
5. Entertainment.
4. No reason to make something that lasts forever.
3. Defective manufacturing.
2. Made in China.
1. Entertainment. Fire Fire Fire.

I guess I got lucky with the two 1500 mah lipo receiver
packs that I just had to replace. I wrote the purchase on
date on them when I took the out of the packages and
one lasted two years and the other lasted a week
longer. They were recharged hundreds of times and
took alot of abuse. I guess I got my moneys worth from
them. Then again, I had a Thunderpower 2100 mah lipo
receiver battery that didn't last three months.

I'm still looking for the chemical reason one swells and haven't seen a reference explaining it yet. It is a gas thats generated and what I've read says its generated both in charging and discharging. Obviously generated outside of 'normal' parameters since most don't swell when merely charging or discharging.

I've had my share - I left some stored at 50% charge and was gone for much longer than anticipated (out of the country on assignment), when I got back most had a puffed cell - every one was the cell on top as I had left them sitting. I even had a new, never used one puff.

What were they sitting on, or in ???
Thanks

They were sitting on a porcelain slab inside a 23mm ammo can - none of them were touching.

one of my LIFE packs swelled like your LIPO. I curious as to why as well.

Go here and scroll to page 40 and read section 8.3.2.10 completely. Good info.


http://www.roarracing.com/downloads/..._Rule_Book.pdf

i was thinking if the higher C rating will have some setback? i used the 3800mAH & 4000mAH of same model. but they do not swell. this except the 5000mAH & the 5200mAH.

HAHAHAHA....like #5 and the last one for sure! all i know is when my lipos swell i get rid of them. i hear they can catch fire when they do that.

Thanks, that was a good read, some interesting info. Note how for these guys abuse/damage is pretty black and white, if lipo is damaged, its done, period.