Would you dispose of this battery?

[dure16]

Zeee 4S 7ah. A year or two old. Little bit of puff but not too bad. Balances slowly but successfully.

 

[Just a hobby]

Zeee 4S 7ah. A year or two old. Little bit of puff but not too bad. Balances slowly but successfully.


View attachment 311615

Try charging at 5 amp or 6 amp. The swelling might go away. Cell 3 does not look OK. How is the power and run time? Keep an eye on temp running and charging.

 

[davidg]

I will get rid of any battery that shows the slightest sign of puffing. My house and family are worth more than buying a new battery.

 

[Senton_Prime]

IR values will be obscured while in the charging state, charge it up to .. then let's see that value, after that, throw it in a rig and run it for about 10 mins and then throw it on the charger again, observing it's behavior for a few cycles will give you a better idea.. anything above 20 milliohm's is "cooked" they say

 

[Just a hobby]

IR values will be obscured while in the charging state, charge it up to .. then let's see that value, after that, throw it in a rig and run it for about 10 mins and then throw it on the charger again, observing it's behavior for a few cycles will give you a better idea.. anything above 20 milliohm's is "cooked" they say

Great information dude!
I usually charge all my lipos at .5 to 1 amp less than what you can. Less chance of puffing and they last longer. Not much of a power loss at all. I'm not racing.

 

[Hector_Fisher]

The real question is what are you running it in and how hard is it going to be pushed? There's no such thing as an IR limit in my books, just limitations for what you should use a lipo for. For example, if that was a small 2000 mah 4s, would I still use it in a 4s capable crawler with that IR? Yes.

I have known my hota charger to throw out some pretty varied IR during initial charging and then it settles down and the cells IR get closer together at the end of the charge. Might be worth seeing what IR it's at at full charge. I'd do some more testing, get some cycles in, and see if you consistently get higher IR. If so, then you'll have to determine your level of risk tolerance. The limitation of that pack is that that one cell will always run hot, drain lower, and continue to get worse faster than the others.

 

[Moirae]

I'd toss that poop just off the IR alone tbh.

 

[King blitz]

I will get rid of any battery that shows the slightest sign of puffing. My house and family are worth more than buying a new battery.

Yup I say the same .out the door it goes .take noooooo chances

 

[dure16]

Should I keep the good three cells? They seem to be in great shape.

Has anyone done that and/or know of a good tutorial?

 

[Just a hobby]

Should I keep the good three cells? They seem to be in great shape.

Has anyone done that and/or know of a good tutorial?

Contact the lipo company before you toss it. See if they will warranty the lipo for you.

 

[slick2500]

Should I keep the good three cells? They seem to be in great shape.

Has anyone done that and/or know of a good tutorial?

There are a few videos floating around YouTube for doing this. You could also talk to @olds97lss as he has done it many times.