Is my battery toast?

Hey guys i think my true rc 14.8 volt battery is toast.I can charge it on my
hyperion duo,it will take a full charge,each cell is reading 4.20 4.19 4.20 4,18
But when i put it in my losi 8 buggy and pull the trigger the car runs very
slow like it has no power.I check it with a volt meter and it read 16.6 volts.
I check all soldering joint and check my motor,everything is find.I tryed a
different battery,and it seems to work.Then i charged it again and put it
up for a while and check it with the volt meter and each cell was like
this,4.0 3.70 4.16 4.19 i think this batt it toast it was a little puff at one
time i ran it over greared ,temp was about 138.so what do you guys think?

[suicideneil]

The voltage checks okay when its fully chargered, but it sounds like a bad/weaker cell or two is stiffling the power output. 138*F is rather too hot, definately sounds like you cooked it slightly. Might be okay in a less demanding application, but otherwise you are probably better off binning it saddly.

[NoControl]

You could also talk to linc he's seems to be the master of lipo cpr.

[BrianG]

If it puffed, get rid of it. Although, if you have only one bad cell, you could reconfigure it as a 3s pack. Not ideal, but better than throwing the whole thing away...

Thanks guy but the battery bit the dust today,lucky i had it in a metal box when
i got back from work i went to check it out open up the lid and sure enough it went
poof! Man what smell.Lucky it was not fully charged it could have been worse.

[aqwut]

One of my polyquest packs puffed up last summer, when I accidently used a partially charged 3S with a fully charged 3S... it was hot and puffed up like hell.. I left it in a box somewhere and just found it last week.. and I couldn't beleive it.. it was fine... I used it for the whole days Last Sunday for about 3 Charging/discharging cycles....

[Metallover]

Was it a maxamps pack?

[scarletboa]

Originally Posted by Metallover

Was it a maxamps pack?

if you read the entire first post, you will notice that he said it was a truerc pack. they aren't as bad as maxamps, but still wouldn't buy them. i have zippys and love them.

[What's_nitro?]

Originally Posted by Metallover

Was it a maxamps pack?

We here at RC-M frown upon trolling. ..........

[lincpimp]

Originally Posted by What's_nitro?

We here at RC-M frown upon trolling. ..........

So you are against dropping acid and popping some ex?

[What's_nitro?]

Huh?

[whitrzac]

Originally Posted by lincpimp

So you are against dropping acid and popping some ex?

I hate my reality, so I make my own.

[lincpimp]

Originally Posted by What's_nitro?

Huh?

Trolling is a pop culture slang term for tripping and rolling...

Originally Posted by whitrzac

I hate my reality, so I make my own.

Still your reality, as life is what you make it... Sounds like you hate yourself, and you use the drugs to alter yourself in a vain attempt to make yourself more acceptable to society. You need to free yourself from the self imposed fixation on acceptance from society.

[What's_nitro?]

Ahh, pop-culture... THAT'S why I had no idea!!!

[_paralyzed_]

So, he said the pack is toast. I think it would be delicious with a spoonful of marmalade.