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Old 10-13-2007, 11:15 PM   #1
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Default Quik Q bout my IB4200

hey,

atm i am charging my stik pack intellect 4200's

I am noticing the 1 of the cells is getting hot (warmer than the others)

about 2 degres celcius hotter (ICE charger)

could this mean the cell is dead...coz i have also realised the pack doesnt hold its charge.....and when i go 2 dis-charge it....it reads like 4 volts.....

wat should i do.


should i rip apart the pack and keep the good cells...or do i just chuck the whole thing away..thanxs

wog


oh btw....a lil while ago (bout a month) i was charging the packs at race-spec amperage (8amps) and i heard 1 of the cells venting...so i took it off and it stopped straight away...then whenever i charged it past 5.6 amps (i think it was that or close 2 it) it would vent....???

any ideas


thanxs
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Old 10-13-2007, 11:18 PM   #2
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at this point in time...

charge time 12 mins
current 4 amps (2 c if i can bring the pack bak up 2 health)
temp. 34 degrees!!!!
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Old 10-13-2007, 11:24 PM   #3
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they just delta-peakd at 1224mah....at 38+ degrees.....and i am watching the voltage reading on the ice's screen and i am watching the batt. voltage drop.

wat should i do...thanxs
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Old 10-14-2007, 12:54 AM   #4
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Cells can become unbalanced over time. It's best to equalize them often. The more the better, but I suggest no less than once per dozen charges. You may have one cell storing more charge than the others and it is overcharging while the others are still taking on a charge. There is a chance it could be a bad cell, but nonetheless .... equalize to prolong the life of your cells.

Here is how you do it with the ICE if you don't have a good equalizing tray like the Trinity DPD (Note: much different than a discharge tray).
1. Discharge (10 amps linear) the pack down to 1.1V per cell.
2. Program a new option in your ICE to do 1 single cell.
3. Manually hold the positive and negative leads on 1 cell and discharge (10 amps linear) down to 0.9V. Repeat until all cells are done. This process usually only take around 1-2 minutes per cell.

Holding the leads on stick pack cells is certainly harder than a side-by-side pack. But if your track allows you to poke holes in the shrink wrap seal, then go for it. A combination of aligator clips and very small screwdrivers works well.

Last edited by James35; 10-14-2007 at 01:06 AM.
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Old 10-14-2007, 01:27 AM   #5
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What is RACE SPEC AMPERAGE??

And where did you hear this from

Mate you have cooked the cell which caused it to vent. Maximum recommended charge for Any IB cell from manufacturer or Matcher is DO NOT EXCEED 6 Amps charge.

The results of this is multiplied with stick packs mainly becuase of their construction which doesnt allow the heat to disperse as quickly or evenly compared to ladder or saddle pack configuration. [quote

oh btw....a lil while ago (bout a month) i was charging the packs at race-spec amperage (8amps) and i heard 1 of the cells venting...so i took it off and it stopped straight away...then whenever i charged it past 5.6 amps (i think it was that or close 2 it) it would vent....???

any ideas


thanxs[/quote]
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Old 10-14-2007, 01:32 AM   #6
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My cells got hot before 2/6 cells died on me over a month ago. I still didn't get my replacement from SMC btw. I think the new batch of IB cells are only good for like 10 charges until it becomes unstable. I used the remaining cells on my 4cell brushless, and those are starting to vent at 5amps. I discharge my cells to 1V/cell and finish it on a equalizer to 0.9V. I hear there might be a new batch, and hope those are more stable. Until then, I'm happy with my EPs.
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Old 10-14-2007, 03:01 AM   #7
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I have to agree with addicted, no matter what any-one else tells you dont go over 6 amps. I know a couple of blokes that have started discharging at 7 amps but it is only a matter a of time before they cook them.
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Old 10-14-2007, 03:42 AM   #8
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Quote:
Originally Posted by addicted View Post
What is RACE SPEC AMPERAGE??

And where did you hear this from

Mate you have cooked the cell which caused it to vent. Maximum recommended charge for Any IB cell from manufacturer or Matcher is DO NOT EXCEED 6 Amps charge.
[/QUOTE]

Well.....u dont charge batts. at 8amps for practice??? do ya??
thats y i used the words race spec amp.


cheers for the info guys
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Old 10-14-2007, 03:42 AM   #9
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Quote:
Originally Posted by James35 View Post
Cells can become unbalanced over time. It's best to equalize them often. The more the better, but I suggest no less than once per dozen charges. You may have one cell storing more charge than the others and it is overcharging while the others are still taking on a charge. There is a chance it could be a bad cell, but nonetheless .... equalize to prolong the life of your cells.

Here is how you do it with the ICE if you don't have a good equalizing tray like the Trinity DPD (Note: much different than a discharge tray).
1. Discharge (10 amps linear) the pack down to 1.1V per cell.
2. Program a new option in your ICE to do 1 single cell.
3. Manually hold the positive and negative leads on 1 cell and discharge (10 amps linear) down to 0.9V. Repeat until all cells are done. This process usually only take around 1-2 minutes per cell.

Holding the leads on stick pack cells is certainly harder than a side-by-side pack. But if your track allows you to poke holes in the shrink wrap seal, then go for it. A combination of aligator clips and very small screwdrivers works well.

yea...good idea...but it is a stik pack....not ladder pack...

doesnt that mean that ihave to rip off the shrink wrap....
coz thats the only way i can think of being able 2 do that
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Old 10-14-2007, 08:55 AM   #10
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Quote:
Originally Posted by wog....supraman View Post
yea...good idea...but it is a stik pack....not ladder pack...

doesnt that mean that ihave to rip off the shrink wrap....
coz thats the only way i can think of being able 2 do that
Just clip your charger leads to a couple small flat blade screwdrivers as James eludes to in his message. Then stick the screwdrivers through the shrinkwrap at the locations between the cells to discharge each cell individually.
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Old 10-14-2007, 01:12 PM   #11
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Quote:
Originally Posted by wog....supraman View Post
hey,
oh btw....a lil while ago (bout a month) i was charging the packs at race-spec amperage (8amps) and i heard 1 of the cells venting...so i took it off and it stopped straight away...then whenever i charged it past 5.6 amps (i think it was that or close 2 it) it would vent....???


I have to remember to never pit near you!

8amps! can anyone say "claymore"
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Old 10-14-2007, 02:35 PM   #12
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Old 10-14-2007, 05:09 PM   #13
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ease up on the guy! he probably read somewhere that a few pros charge at 8amps. i have read this also, but i have to pay for all of my batteries so its 5 amps for me.
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Old 10-15-2007, 01:45 AM   #14
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ok cool thanxs 4 the help guys.....ill try it out later
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