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Old 08-05-2002, 08:03 AM   #1
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Default 2400s vs 3000 for stock

I'm trying to find consensus of opinions about whether 2400 or 3000 smh batteries are best for stock motor racing. Because run time is not an issue, I'm looking for best puch and run-duration power, lighter weight, etc. I've been impressed with my one SMC 2400 pack versus my one Integy 3000hv pack. Thanks for your input.
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Old 08-05-2002, 08:09 AM   #2
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in my opion it would be hard to compare the two without cycling them on a t35 cause the numbers on the integy batts are aquired differently than numbers on the SMC pack. I willing to bet the SMC pack has better #'s I.E. Voltage and Internal resistance.

In my opion it does matter for stock racing wheateher its a 2400 or 3000 they both have decent run time, It just matters what that specific battery can do. I would choose a 1.14/I.R. 24 discharged at 30amps over a 1.25/I.R. 28 dischaged at 30 amps 2400 pack. And if the numbers were switched for the packs I would choose the ones with the best numbers.

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Old 08-05-2002, 08:45 AM   #3
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one thing about choosing a 3000 over a 2400 is that you stay in the optimum performance band a lot longer then you would with a 2400. where the 2400 drops off like 2 to 3laps remaining, a 3000 will still keep performance up. now in some cases this isint true because some batteries are just better packs. and seeing as how you want maximum performance i would run either a SMH or UMH pack and tray them after every run. Big Jim said that if u want your extra run time disharge them to 5.4v and leave them for next weekend, if u want to lower IR and gain punch, disharge them to .09v and tray them. then re-tray them before charging next week. when this is done to panasonic cells their punch comes up and their is a noticable performance difference after 2-3 cycles. by doing this, you have a longer window for optimum performance w/ a 3000 and you gain punch like a 2400.
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Old 08-05-2002, 06:26 PM   #4
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3000's!!?? I'm making the a-main using 2000's! I have one 2400 pack, but notice any better performance from my lap times, I just have a lot of run time left over. Whan cycled on my t30,I only see about a .02-.03v per cell difference between my 2400 and 2000's. There have been very few instances where I have actually wished I had better packs,but it usually passes. I think that the .02-.03v per cell can only really be used by racers with the driving ability and set-up for their cars. I don't mean to sound biased or arrogant, I just got tired of the battery of the week mentality. Maintain your packs and discharge them to .9v per cell. I find that in stock racing,unless you have a very inefficient motor, you only average about 18-22 amp draw over the course of a 5 min. race. Which is why I cycle my packs at 5.2amp charge/24 amp disc. and .9v per cell cut-off. With this set-up on my t30, I have seem an improvement in all my packs. --Al
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Old 08-05-2002, 06:31 PM   #5
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All I know is that when I start the race with my Integy 3000HV cells, 5 minutes later, I end the race still putting in lap times just as fast as when I started.

Thats the biggest difference I have noticed between these cells and my 2400 cells.
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Old 08-05-2002, 07:21 PM   #6
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Well first off let me say that ive got some batteries from 98 and if you look closely at them they are pretty much 2400's i use them for practice and they have great punch. I have a yokomo mr4tc and i run the p2k motor and i have madd run time i run 3000 peak and orion packs i love them great punch they are sanyo cells i have panasonic cell 3000's also and i dont like those but 3000's are the way to go
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Old 08-05-2002, 07:27 PM   #7
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Same here. I started with my 2000's, then switched to my 2400's. Noticed big difference with consistancy throughout the race. Then I tried my Ultra's and my lap times are even more consistant from start to finish. Seems like my 2400's have alot of punch at the start, but it dies down after a couple laps. It's just common sense though with 2400s vs 3000s. A high capacity battery equal less voltage drop throughout a 5 minute race when compared with a less capacity battery.
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Old 08-06-2002, 12:45 AM   #8
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UMH or HV's for stock racing, which are better. Are the lower IR's of the panas more beneficial then the high voltage of the sanyo's. I've heard that the UMH cells have a more consistant output over the entire 5mins of the race whereas the HV's taper off, is this correct.
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Old 08-06-2002, 02:01 AM   #9
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My preference:

UMH vs. HV for stock. UMH. More punch.

3000 NiMh vs. 2400 NiCd for stock. 2400 NiCd. More punch.


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Old 08-06-2002, 04:00 AM   #10
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completely unrelated subject here guys........ does anyone know if promatch cells are distributed by a shop that will ship international?????. Any input would be greatly appreciated.
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Old 08-06-2002, 07:57 AM   #11
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Opel, drop me an email, [email protected]
We might be able to work something out.
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Old 08-06-2002, 08:35 AM   #12
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Rowdy - that is correct. also goes with saying that HV's arent good stock packs due to their hi IR where as i have a UMH pack w/ ir of 12-13 at 20 amps. i never had nicd cells go that low. i was lucky to see nicd cells break 20 at 20 amps. they were good packs, but the newer cells have everything not just voltage. the thing i really like is when i race offroad, my fastest laps are my last 4-5 because i settle down and the bettery is still there. when i ran nicd's i could'nt do that. dont get me wrong nicd are great cells. but they arent the best anymore. and some of the new UMH cells have better punch aswell

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Old 08-07-2002, 12:17 AM   #13
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Shrekair - thanks for the input, in your opinion which matchers are producing the best quality UMH cells. I have tried to research this myself but not all matchers give the IR, voltage and run time of their packs.
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Old 08-07-2002, 12:23 AM   #14
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I beleive nicad's have a longer life span but the performance of the nimh's are by far better than a nicad
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Old 08-07-2002, 08:16 AM   #15
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i've had first hand expierence w/ a turbo matcher 4 and i believe it to be very consistant and accourate. the lavco matcher is also a well designed matcher and its used by orion and reedy might still use them. but every small company or trinity etc. uses turbo matcher 4's.
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