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Old 09-09-2003, 10:41 PM   #1
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Default 20amp vs 30amp numbers

is there any way to tell what the numbers of a battery that's matched at 30 amps, would be like at 20 amps? i tried calculating it but it didnt make sense. thanks
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Old 09-10-2003, 12:09 AM   #2
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Default Re: 20amp vs 30amp numbers

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Originally posted by TC3Racer67
is there any way to tell what the numbers of a battery that's matched at 30 amps, would be like at 20 amps? i tried calculating it but it didnt make sense. thanks

... nope. cycling is the best possible way.
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Old 09-10-2003, 02:23 PM   #3
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Default 20amp vs 30amp numbers

I've seen a chart that did a comparison (calculated), but don't remember where.

Usually the comparison is from 20 amp numbers to 30 amp, not the inverse. The 20amp Matchers are a dying breed anyways.
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Old 09-10-2003, 02:25 PM   #4
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To get a close estimate add 0.04 from your 30 amp numbers (that's the voltage for single cell) and that'd be pretty much your 20 amp numbers.
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Old 09-10-2003, 02:48 PM   #5
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www.promatchracing.com has a runtime conversion in the FAQ section toward the end.
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Old 09-10-2003, 05:10 PM   #6
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Default Hey stephen

runtime x discharge amps divided by desired discharge amps (ie. 600 x 20amps / 30 = 400). Good theoretical but times can vary since cell react differently to different amp rates. Also, i have been told that a +- 3% in runtime from discharge to discharge can be experienced, in part due to temperature differences.- hope this helps.

Voltage is even more estimated but typically .01.51-2v per 5amps or .03.4-5v difference between 20amp and 30amp voltages. BMcG (Axiom5b) did a nice mathmatical calculation that showed this)... Of course .03.5v is technically .04v, he,he,he.



hey steve/BMcG what's up bros? James and i might come up for practice at Venture on Saturday but nothing is set yet.

Practiced at Trackside last Friday with Juch's and Paul, had a great time and i am looking forward to the season...After a few more rounds of golf that is. LOL!!!
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Old 09-10-2003, 05:59 PM   #7
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I'm running stock foam on sunday. And yes golf is fun
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Old 09-10-2003, 06:07 PM   #8
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Dave I can't make it sat. dude, homecoming weekend

BUT....

You'll really like the track layout that's down
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