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Old 03-04-2007, 11:14 PM   #1
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Default ib 4200 battery question

i have the intellect 4200ib batteries and charge them with my mrc 959 superbrain charger but my charger shows only around 3800-4000 put into my batteries when i charge them.i always discharge my packs down to .9 and charge them at 6amps.is this normal?
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Old 03-05-2007, 12:18 AM   #2
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how old are the packs?
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Old 03-05-2007, 12:28 AM   #3
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Quote:
Originally Posted by tony2
how old are the packs?
it only has about 5-7 cycles in it.just bought it about a month ago
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Old 03-05-2007, 04:01 AM   #4
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If your brain charger allows it (im not sure) you need to increase the millivolt setting for the peak detect. And monitor battery tempreture. They should be getting to about 51 to 53 degrees celcuis when they peak. if they are not getting this warm then you definatly need to increse the delta peak millivolt setting as they are not getting to full charge / capacity.

Also make sure you tray them, to 0.9volt per cell, so that each cell is discharged individually (this is very important!) (not doing this can cause your problem!)

When discharging in series (whole pack) i would only have a voltage cut off of 1.0v per cell (6 volts for a 6 cell pack) other wise you can risk over discharge of some cells in the pack, which can also cause the symtom you are getting.

discharge in series at high amp rate first, then tray them at a low amp rate second, then allow an hour or 2 to cool then charge them,


if this does not help, then at the end of the charge feel the temp of each cell, if one or 2 of them are heaps hotter than the rest, then they are faulty/dud cells & need to be changed.


I asume your packs are side by side packs & not stick packs other wise it is very hard to tell whats wrong.
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Old 03-05-2007, 09:13 AM   #5
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all ib4200 should have this peak tempreture???


"They should be getting to about 51 to 53 degrees celcuis when they peak."

wouldn't it be too hot????

any other comment?
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Old 03-05-2007, 12:06 PM   #6
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my packs temp is about 120 degrees farentheit so i assume its fully charged.and yes my superbrain has a peak detection adjustment.i dont have a discharging tray so i discharge them with my charger, maybe this causes the problem.
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Old 03-05-2007, 12:45 PM   #7
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some people say discharging your packs to zero or dead shorting it is good.im confused
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Old 03-05-2007, 12:48 PM   #8
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Quote:
Originally Posted by civiceg
some people say discharging your packs to zero or dead shorting it is good.im confused
That was for the GP3300 cells. Definately dont do that with the 4200. Never go below .9 (some say 1.0) with a 4200.
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Old 03-05-2007, 01:00 PM   #9
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so whats a good discharger on a budget?
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Old 03-05-2007, 01:04 PM   #10
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If you arent looking to equalize the cells then the Integy Reactor 30.
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Old 03-05-2007, 01:33 PM   #11
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Quote:
Originally Posted by edwintklee
all ib4200 should have this peak tempreture???


"They should be getting to about 51 to 53 degrees celcuis when they peak."

wouldn't it be too hot????

any other comment?

52 c or 125 f is about the perfect peak temp (at exact time of peak)
for racing, to be competitive and get decent punch out of the cells.

above 132f is starting to damage them.
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Old 03-05-2007, 01:49 PM   #12
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sorry guys but im new to electrics.got another dumb question.what do you mean by equalise?
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Old 03-05-2007, 02:02 PM   #13
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Equalize means "to get each cell down to the exact same voltage (0.9 volt)
it is done with a tray type discharger that has a individual cell voltage setting.
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Old 03-05-2007, 02:06 PM   #14
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like the Novak smart tray se, trinity dpd, much more ctx-d , team wave lightning ver 2.

some are available here:

They are a must for matched ib4200's, if you want to make them last more than a month or 2 & have good performance that is.

http://www.feralbatteries.com.au/category.aspx?id=%2038
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Old 03-05-2007, 02:14 PM   #15
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Quote:
Originally Posted by LOSI123
like the Novak smart tray se, trinity dpd, much more ctx-d , team wave lightning ver 2.

some are available here:

They are a must for matched ib4200's, if you want to make them last more than a month or 2 & have good performance that is.

http://www.feralbatteries.com.au/category.aspx?id=%2038
so these batteries only lasts for a month or 2?
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