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Old 11-10-2007, 05:25 PM   #1
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Default Waking up 4200s (IBs)

Is there a method to make these wake up? Here's my situation:

I put them on my CTX-D2 and they show 1.42ish on the volts, if I run linear (10 amps) they will go down to .9v, if I run 30 amp pulse 3 immediately go to "Done" even though it doesnt seem like they should be.

If I use Linear to bring them down, and they I charge them back up it says charged after like 800 mah max. I cycled them a few times, but have never seen them actually get a charge them in them. Even on my Advantage charger the volts read 9.0ish when it starts to charge it back up after I take them down to .90v, which doesnt make sense.

Any idea why they are false peaking and not showing the correct voltage? My other packs are fine, as are my EPs.
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Old 11-10-2007, 05:48 PM   #2
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The voltage that you are seeing ont he charger is not really the voltage of the pack. It's the voltage the charger needs to get the amperage you are trying to charge at past the resistance of the cell. The more resistance, the higher the number. Set a long lockout on your charge, do a temp charge, or drop the amp rate to get a full charge into them and then do like a 10 amp discharge. Might need to try a few cycles. Your packs might be irreversibly damaged but try to get a few cycles through them and see what happens.
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Old 11-10-2007, 05:51 PM   #3
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What would the setting be for a longer lockout? the mv setting? Any particular amperage I should charge them at?
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Old 11-10-2007, 07:30 PM   #4
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If you are using a Much More charger there is a feature you can enable called a Long Lock Out where peak detection is turned off for a few minutes at the start of a charge. I think you can get this mode at the start of a charge by holding down the start (right arrow) button for a few seconds untill a key appears on the display.

I use a Duratrax ICE and on it you can set the lock out time from 0-10 min.

Just be shure you know you pack is fully discharged before using any lock out feature...or your battery will go BOOM...i'm serious...BOOM like dynamite

From now on keep your IB4200's fully charged at all times. Repeak them once a week if you do not race.
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Old 11-10-2007, 07:40 PM   #5
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I hear charging them at 10A won't work.
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Old 11-10-2007, 07:47 PM   #6
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Quote:
Originally Posted by syndr0me View Post
I hear charging them at 10A won't work.
They were talking discharge....but yeah 10A charge for IB4200's is dangerous
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Old 11-10-2007, 08:48 PM   #7
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PLEASE PLEASE Put them on a tray before every charge cycle
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Old 11-10-2007, 08:50 PM   #8
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I have a CTX-D2 that I bring them to .9 with.
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Old 11-10-2007, 09:37 PM   #9
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Quick Ib question, I just got home from the races tonight, I ran stock sedan with my ib4200s, I left the charge in the pack from when the car came off the track. Is this ok or should I fully charge them
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Old 11-10-2007, 10:33 PM   #10
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Quote:
Originally Posted by Tim W. View Post
Quick Ib question, I just got home from the races tonight, I ran stock sedan with my ib4200s, I left the charge in the pack from when the car came off the track. Is this ok or should I fully charge them
If you are racing next week dont bother. If it will be a week or more charge them up. They lose about 1000mah per week...or at least thats what goes in when I repeak weekly if I dont race.
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Old 11-10-2007, 10:46 PM   #11
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Quote:
Originally Posted by AdrianM View Post
If you are racing next week dont bother. If it will be a week or more charge them up. They lose about 1000mah per week...or at least thats what goes in when I repeak weekly if I dont race.
Thanks AdrianM, it will be 2 weeks so I will add a little juice to them tommrow.
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Old 11-11-2007, 06:51 AM   #12
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Quote:
Originally Posted by K_King View Post
I have a CTX-D2 that I bring them to .9 with.
ACtually it brings the pack down to 5.4 .9x6cells. So that is not considered equalized. Depending on your cells condition you could have a pack cut off at 5.4volts but each cells is:
1.2
1.2
.75
.75
.75
.75

Wich would mean ya the CTX dumped to 5.4 but you have over discharged 4 cells while 2 are not discharged yet, this is the issue with IB cells the self discharge rates of stored packs is terrible, cells dropping at different levels.

So what i recomend is dump on CTX to 6volts and then tray to .9 "PER" cell. Then charge. Unfortunalty you have to baby the IB this way
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Old 11-11-2007, 07:57 AM   #13
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CTX-D2 is the equaliser.

Sounds like your cell care method is fine. Equlaise then charge.

If one of the cells is underperforming in the pack, it seems that it is a bad cell, nothing you can do about it but replace.

With the IBs, a cell that has gone down to 0V can be resuscitated. Cells that just don't perform well any more can't. All cells degrade through use, sadly it is not reversible.
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Old 11-11-2007, 10:39 AM   #14
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Quote:
Originally Posted by Joel Lagace View Post
ACtually it brings the pack down to 5.4 .9x6cells. So that is not considered equalized. Depending on your cells condition you could have a pack cut off at 5.4volts but each cells is:
1.2
1.2
.75
.75
.75
.75

Wich would mean ya the CTX dumped to 5.4 but you have over discharged 4 cells while 2 are not discharged yet, this is the issue with IB cells the self discharge rates of stored packs is terrible, cells dropping at different levels.

So what i recomend is dump on CTX to 6volts and then tray to .9 "PER" cell. Then charge. Unfortunalty you have to baby the IB this way

The CTX-2 brings each cell down to .9 individually, not the whole pack.
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Old 11-11-2007, 10:48 AM   #15
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I had packs that were left for some time false peak. I first thought of increasing the delta peak and watching the temp, but that seemed a bit harsh to the batts. I cicled them twice at 0.1C (0.5 amps for IB4200) and after that they were ok.

Good luck
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