Is it puffed?

[hellogoose]

Hi all,
yes, another stupid question
Lipo I ordered on Aliexpress just arrived, is it a bit banged up? or am I overthinking those wrinkles?
Thanks again!

 

[AIRFORGE]

Hi all,
yes, another stupid question
Lipo I ordered on Aliexpress just arrived, is it a bit banged up? or am I overthinking those wrinkles?
Thanks again!

From what I can see, it's fine.

 

[quorneng]

I looks fine. As long as it charges normally (ideally all cells starting at the same voltage) it is fine.
This is what a really puffed and damaged LiPo cell looks like.

It was still showing 3.7V but it wouldn't deliver many amps. Be aware the gas that puffed it up from mis use is highly inflammable and any further use could cause it to get hot and possibly self ignite.

 

[Bricks]

I fly a few that are puffed but not nearly as bad as that one, looks like one to have some fun with.

 

[hellogoose]

ok, thanks

 

[Piotrsko]

If you really want to see if it's damaged do like @quorneng said and test it for capacity. Or power a radio and servos (maybe even a motor also) outside away from burnables until you get a low voltage alarm.

I have one where I bent one cell 45 degrees, it still works after I pounded it flat again, but it isn't on anything I value and it lives in an old ammo can outside

 

[short_nathan]

I guess one can easily tell if its puffed up

 

[Piotrsko]

If you have a twin spare, then yes it is easy. Sometimes with good shrink tube you cant tell unless you have something as a reference

 

[Captain Mouser]

Where is Aliexpress located? I’ve heard about that vendor.