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SV27 Battery Thread - 10/6/2006 5:36:44 PM   
rooski



Posts: 475
Joined: 6/27/2005
From: , SC, USA
Status: offline 		Title says it all....
       Post #: 1

RE: SV27 Battery Thread - 10/6/2006 6:02:59 PM   
Wazool



Posts: 101
Joined: 9/8/2006
From: grasonville, MD, USA
Status: offline 		Is anybody constantly running 7 cells?

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       Post #: 2

RE: SV27 Battery Thread - 10/6/2006 6:24:57 PM   
rooski



Posts: 475
Joined: 6/27/2005
From: , SC, USA
Status: offline 		I ran mine on 14 cells for the first 2 weeks (GP3300's) while I was waiting for my IB4200 6-packs. I honestly feel the 12 IB4200's are nearly as fast (no GPS) as the 14 GP3300's. Could be because the GP3300's are older...or because of the extra weight. Not sure.

(in reply to Wazool)
       Post #: 3

RE: SV27 Battery Thread - 10/6/2006 8:29:14 PM   
CadillacETC2000



Posts: 6338
Joined: 10/23/2005
From: Tottenham/Orillia, ON, CANADA
Status: offline 		the ib's dischage at a greater rate , so you could be rite , if you run 14 cells of the IB u will see a diffrence

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RE: SV27 Battery Thread - 10/7/2006 5:53:21 AM   
Woodmandan2



Posts: 847
Joined: 11/13/2005
From: NanjingJiangsu, CHINA
Status: offline 		Are the Duratrax BAtteries Any good?
Dan


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Traxxas Jato 3.3: Resnatr Dual Chmbr Exaust, Ebay Piggyback Shocks

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RE: SV27 Battery Thread - 10/7/2006 7:48:21 AM   
Woodmandan2



Posts: 847
Joined: 11/13/2005
From: NanjingJiangsu, CHINA
Status: offline 		I started druleing over the keyboard when i saw these. I was wondering if they are any good but i am sure they are!!!!!
4500 mAh Cells
Please don't buy them all so when i need some i can buy some!!!!
Dan


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Traxxas Jato 3.3: Resnatr Dual Chmbr Exaust, Ebay Piggyback Shocks

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RE: SV27 Battery Thread - 10/7/2006 5:39:44 PM   
Wheelnut



Posts: 4769
Joined: 10/25/2003
From: Annandale, VA, USA
Status: offline 		Thats where I get my batteries. The batteries I have bought from them has always been great quality. Make sure you use the selections at the bottom of the custom pack link to get the 12awg wire and battery bar upgrade and deans plugs

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RE: SV27 Battery Thread - 10/7/2006 6:36:20 PM   
FE_Chris



Posts: 2348
Joined: 6/5/2005
From: Grand Blanc, MI, USA
Status: offline 		I ran mine on 14 cells. They where cheepo's. The boat was only 2MPH faster than with my GP3300's.

I felt the boat was not as stable. I had the trim tabs WAY down and I still managed to flip it. I had to swim (I know, don't do it) to get it. Yeah, it sucked. I think some nice matched IB4200 6 cell packs will be the best for me.

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RE: SV27 Battery Thread - 10/7/2006 9:30:18 PM   
rooski



Posts: 475
Joined: 6/27/2005
From: , SC, USA
Status: offline 		Im' lovin my IB4200's SHV's in my SV27....but there's just one little problem. My Twin Peak charger doesn't like them. The 4200 mah x 2 capacity overheats the charger every time I charge the packs. I now have to time the packs at 30 minutes...disconnect them...let the charger cool for a while...then finish charging them later. Anybody else have this happen? I may have to get a new charger. Uggggg.

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       Post #: 9

RE: SV27 Battery Thread - 10/7/2006 10:13:42 PM   
FE_Chris



Posts: 2348
Joined: 6/5/2005
From: Grand Blanc, MI, USA
Status: offline 		I use a Super Brain 977 Pro. It gets pretty hot charging 2 batts at 5 amps, but never has it shutdown on me That sucks dude.
quote:

ORIGINAL: rooski

Im' lovin my IB4200's SHV's in my SV27....but there's just one little problem. My Twin Peak charger doesn't like them. The 4200 mah x 2 capacity overheats the charger every time I charge the packs. I now have to time the packs at 30 minutes...disconnect them...let the charger cool for a while...then finish charging them later. Anybody else have this happen? I may have to get a new charger. Uggggg.



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BlackJack 55, go gas or go home! I should change my screen name to "Gas powered Chris" HA!

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       Post #: 10

RE: SV27 Battery Thread - 10/7/2006 11:24:49 PM   
Wazool



Posts: 101
Joined: 9/8/2006
From: grasonville, MD, USA
Status: offline 		Even had to charge my 8 cell IB4200s on the twinpeak for a while, eenthouh it is not made for it but never had a problem. Just repeaked 4 6cell 4400 packs with no problem.

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       Post #: 11

RE: SV27 Battery Thread - 10/8/2006 12:39:47 AM   
Wheelnut



Posts: 4769
Joined: 10/25/2003
From: Annandale, VA, USA
Status: offline 		I use a small desk fan pointed at the batterhes while charging them. It helps alot. My Duratrax Ice has a built in fan that helps it from overheating. You might want to get a small desk fan and point it at your charger and see if that helps.

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RE: SV27 Battery Thread - 10/8/2006 7:21:50 AM   
Woodmandan2



Posts: 847
Joined: 11/13/2005
From: NanjingJiangsu, CHINA
Status: offline 		Yea,
I have never used high-mah batteries before. The most i have ever had was 1500 mah and that was for my jato started battery
Dan


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Traxxas Jato 3.3: Resnatr Dual Chmbr Exaust, Ebay Piggyback Shocks

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       Post #: 13

RE: SV27 Battery Thread - 10/8/2006 10:46:15 AM   
pompebled


 

Posts: 1902
Joined: 1/31/2004
From: Sneek, NETHERLANDS
Status: online
quote:

ORIGINAL: rooski

Im' lovin my IB4200's SHV's in my SV27....but there's just one little problem. My Twin Peak charger doesn't like them. The 4200 mah x 2 capacity overheats the charger every time I charge the packs. I now have to time the packs at 30 minutes...disconnect them...let the charger cool for a while...then finish charging them later. Anybody else have this happen? I may have to get a new charger. Uggggg.



Hi Roosky,

The IB4200 are widely used in the European race-scene, but they are on the manufacturers limit as far as being rugged; there have been countless occasions on which some of the cells have died, due to overheating after being charged.

It seems to be very important to keep the cell temperature under 45 degrees Celcius, when you take them from the charger and put them into the boat.
These cells heat up substantually after being disconnected from the charger, once they exceed 70-75 degrees C, the will gass and loose pressure/punch, or, if the motor load is high enough, die altogether, taking off their coats.

When running in the European Championship this summer, using the new IB4200, I sadly had to drop out of the second heat with two cells overheating, slowing me down considerably....

The general idea is to run the cells twice a day max, cool them while charging and only charge them with 2A.
I've done this for the remainder of the season and my other IB4200 have survived until now.
I only use a higher charging current during the last five or ten minutes of the cycle, taking the fan off, to get the cells at working temperature (40 degrees C).

Only running them twice a day meant I had to use my last years GP3300 for at least one heat of the three we run, I must say, the difference isn't that great at all, if I go by the number of laps I can squeeze out, within the limit of the 6 minute race.

So gents, go easy on your IB4200, they don't stand up to the abuse the GP3300 takes effordless...

Regards, Jan.

< Message edited by pompebled -- 10/8/2006 10:47:31 AM >

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