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Old 2008.01.28, 04:08 PM   #1
JC@TSR
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Team Scream Racing Matched 900 Mah Min Z Cells

Hi Everyone The ask Team Scream Racing Forum is up and running. I will do my best to answer every question in a timely manner and to the best of my knowledge.
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978-337-0429
1/12 Stock Cleveland US Indoor Champion 2007
18 Time 1/18 Off Road National Champion
18 Time 1/18 On Road National Champion
26 Time East Coast Champion
RCX 2WD Stock Mini-Z Champion
2008 RCX F1 Stock Mini-Z TQ/Champion
2008 RCX Pan Car Mod Mini-Z TQ/Champion
2008 19T UK National Champion
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Old 2008.01.28, 06:41 PM   #2
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Hey great cells. I ran them in my last race, and had great results. I am planning on getting a few more sets, and use these cells for all of my heats and mains.

How many cycles would you recommend running in a race night before the cells start to run flat?

What would the highest amperage charge that the cells could reliably take. I have been charging at 1A on my Maha charger, but cells off that charger dont seem to run as fast as cells charged at 1A on other chargers.

I have never charged in series, only with smart chargers (Duratrax 30 minute, Energizer 15 minute, and Maha MH-C9000). I have only used your cells in my Maha charger, since I want to make sure not to charge them at a high amperage. I know the Energizer is way too harsh on cells, and I usually only use that one to repeak cells before heats. I am also planning on getting a Lacrosse BC-900 to help maintain the cells (I run many classes, so I need lots of cells.

I usually only fully cycle the cells once a week. It would be nice if you could write a small tutorial about maintaining these cells properly for long term use and to keep them performing top notch.

I usually use cells for a point series, charge them harsh... then the next series I would get new cells. I am trying to avoid doing that with these cells, since they are matched and should last a bit longer than unmatched cells.
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Old 2008.02.02, 03:33 PM   #3
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I will have a full set of care tips for these cells up soon. I have been matching like a mad man so I can fill the preorders I have.
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John at Team Scream Racing
www.teamscreamracing.com
978-337-0429
1/12 Stock Cleveland US Indoor Champion 2007
18 Time 1/18 Off Road National Champion
18 Time 1/18 On Road National Champion
26 Time East Coast Champion
RCX 2WD Stock Mini-Z Champion
2008 RCX F1 Stock Mini-Z TQ/Champion
2008 RCX Pan Car Mod Mini-Z TQ/Champion
2008 19T UK National Champion
2005 Stock UK National Champion
2006 4 Time BRCA UK Champion
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Old 2008.02.13, 05:00 PM   #4
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Cell Care

Here is battery charging and care info I was going to post.

PERFORMANCE CHARGING

(1) Charge at 1.0 amp with a high end charger such as a GFX, LRP, Tekin Etc.
(Our testing shows that the Power X and Lacross style Chargers false peak cells.)
(2) Peak Detect setting is .30-.40 MV
(3) After Running your cells discharge them at 3.0 amps to .90 volts per cell.
(4) Equalize the cells just before you charge them for best performance.

CHARGE RATES TESTED

We have tested these cells at a 2.0 and 3.0 charge rate. I will do 4 and 5 today to see how they do. They handle the 2.0 and 3.0 very well, the only down side is the IR goes down and you loose some runtime. With 5 min races this should not be a problem.

STORAGE

I have left 8 cells sitting since I started matching the cells. The numbers were 1.25 and today they were 1.22 and 1.23 after 30 days of sitting. I would put a 5-15 min. charge in the cells if you plane on storing them over the summer. Just to be safe I would also check the voltage every 30-60 days in each cell. I do not see these cells self discharging from what I have found.

I will do my best to keep up with the questions. If for some reasone I do not answer a question fast enough please call me at the number below.
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John at Team Scream Racing
www.teamscreamracing.com
978-337-0429
1/12 Stock Cleveland US Indoor Champion 2007
18 Time 1/18 Off Road National Champion
18 Time 1/18 On Road National Champion
26 Time East Coast Champion
RCX 2WD Stock Mini-Z Champion
2008 RCX F1 Stock Mini-Z TQ/Champion
2008 RCX Pan Car Mod Mini-Z TQ/Champion
2008 19T UK National Champion
2005 Stock UK National Champion
2006 4 Time BRCA UK Champion
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Old 2008.02.13, 05:59 PM   #5
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Sorry about the speeling errors in the last post. Spelling Check does not work when you copy and paste it.
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John at Team Scream Racing
www.teamscreamracing.com
978-337-0429
1/12 Stock Cleveland US Indoor Champion 2007
18 Time 1/18 Off Road National Champion
18 Time 1/18 On Road National Champion
26 Time East Coast Champion
RCX 2WD Stock Mini-Z Champion
2008 RCX F1 Stock Mini-Z TQ/Champion
2008 RCX Pan Car Mod Mini-Z TQ/Champion
2008 19T UK National Champion
2005 Stock UK National Champion
2006 4 Time BRCA UK Champion
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Old 2008.02.13, 06:54 PM   #6
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Thank you for posting this up. Lots of good info! I do have some questions though.

On the Battery performance, what do you mean by equalizing them before charging it? Like discharge them to certain volt. like .90 then charge it? (sorry newbie here) FYI I have lacrosse and ICE charger.

For storaging the battery, I have 4 cars that I race everyday and have like 20 sets of batts. I don't get to use all of them so they end up sitting on my box for a week... is it better for the battery to sit fully charged or .90 discharge? Common sense tells me I have to have them charged since NiMH self discharge right?

Please advice. Thanks!

-TJ
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