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Old 02-24-2008, 05:15 AM   #31
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Originally Posted by Drifting101 View Post
3 per cell or 3 per pack?
No, 3 per cell, 15 total for 5 cells.
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Old 02-24-2008, 05:19 AM   #32
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Originally Posted by zulu View Post
I also had that issue. You need to put about 2000mah into it,then discharge at about 20amps and then equalize the pack. Try to charge it again at 5amps.
Hope you have success.
Thanks for your suggestion. Let me try to see if I can get 2000 in ... it is stopping around 800mah.
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Old 02-24-2008, 09:57 AM   #33
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Originally Posted by Fran View Post
I went out to Harbor Freight and got these fire-proof bags for valuable documents, on the recomendation of a post Dawn Sanchez responded to after ROARS receint meeting. 10 bucks!! This was suggested for Li-po safety reasons... my NiMh's are charged in this bag now..
Link or more info please. Better than $25 0r $30 for the same bag with "Lipo Sack" silkscreened on it.
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Old 02-24-2008, 02:00 PM   #34
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i have mine set at 30mv per pack so 5mv and never had a problem
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Old 02-25-2008, 01:53 AM   #35
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Ive been away at the nats and finally got home last night.
See there has been lots of questions asked and assumptions made.

For this weeken i had 2 cell failures and both where IB4200.
First one was the pic shown.
This pack is just on 4 month old and was first used last year November.
Total of a max 15/16 charges through it.
My packs get used once a day and are always discharged, equalized and then charged for the race.
What was surprising about this pack was that it was sitting for around 3/4 mins before it vented.
Pack was charged at 5amps with .3mv cutoff.
The table used is a masonite table with metal edges but pack was not in contact with the metal edging at any time.

My second incident happened on Saturday evening when i assembled a new pack.
After assembly i left pack to cool from the soldering and then put 1000mah into it before discharging and putting in the equalizer tray and then left one side as i assmbled another 2 packs.
I later put the pack on charge at 5amps and about 10 mins into charge one cell vented, thinking it was going to explode like the previous one i quickly left the room with my wife and after a few minutes i went back in with a damp towel and covered it and left it outside.
All the other packs where fine.
The amazing thing is that besides the cell venting first is that there are no signs of the cell being faulty.
Yes that cell should be getting very hot but unfortunately the temp probe can only on be 1 cell or between 2 cells depending which sensor you use.

Id suggest any and all racers take that little bit of extra precaution and charge/discharge packs in a container of some sort.
In future id rather be safe than sorry and cant wait for Lipo to be legal to use here in SA.
Have 4600 packs on the way and hope they are much more safer than the IB4200.
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Old 02-25-2008, 06:42 AM   #36
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Originally Posted by Jeckler View Post
Link or more info please. Better than $25 0r $30 for the same bag with "Lipo Sack" silkscreened on it.
They are made by U.S. Patrol and the package reads "Fire Resistant Document Bag" item# JB5076.
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Old 02-26-2008, 04:54 AM   #37
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ib 4600 is better than ib4200
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Old 02-26-2008, 05:16 AM   #38
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Supposedly teh IB4600 are a big improvement.
I will be using IB4600 and EnerG4600 from the next national.
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