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Author Topic: mme power question (part 2)  (Read 2816 times)

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Offline caymanreview

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mme power question (part 2)
« on: December 14, 2003, 04:38:42 PM »
first off, i am buying stuff to build a rc pack for my new mme

i have a rev c mme. and i can run it from 6v to 12v

i think it has a 800mah drain max. so would this differ when say using a 3000mah 9.6v or using a 3000mah 7.2v?

what i am wondering, does it draw the same mah to operate no matter what voltage it is running on?

would there be any reason to buy 9.6v packs over the 7.2v packs?

DaryanLenz

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Re:mme power question (part 2)
« Reply #1 on: December 14, 2003, 06:16:58 PM »
Yes, the higher wattage will yield less power drain.  I forget the formula, but I believe it is in the archives.  By going to 9.6v's, you will get longer run time at the same mah than using 7.2's.  I hope this helps

D

Offline caymanreview

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Re:mme power question (part 2)
« Reply #2 on: December 14, 2003, 06:18:21 PM »
definantly helps. there isnt really a price difference or weight difference beetween the 7v and the 9.6v rc packs

i couldnt find a formula anywhere for this deal. i would love to check it out though!

Offline Sean Gallemore

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Re:mme power question (part 2)
« Reply #3 on: December 14, 2003, 07:31:23 PM »
fucked it up
« Last Edit: December 16, 2003, 07:06:34 AM by Schwillis »

cpclark

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Re:mme power question (part 2)
« Reply #4 on: December 15, 2003, 01:37:48 AM »
if this formula is right and i assume schwilly has his shit together, the power drain at 9.6v is 500mah and at 7.2v is 666.67.  had to do this little equation to make sure i was still proficient in math as it seems i struggle in every class i take in school

Offline Sean Gallemore

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Re:mme power question (part 2)
« Reply #5 on: December 15, 2003, 05:28:48 AM »
fucked it up
« Last Edit: December 16, 2003, 07:06:49 AM by Schwillis »

Offline zhianosatch

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Re:mme power question (part 2)
« Reply #6 on: December 15, 2003, 12:40:54 PM »
Nice work, Schwilly.

Offline caymanreview

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Re:mme power question (part 2)
« Reply #7 on: December 15, 2003, 04:54:50 PM »
i need more than 4 hrs, i archive for a local band that might jam 3 sets at 1.5-2hrs each

Offline caymanreview

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Re:mme power question (part 2)
« Reply #8 on: December 15, 2003, 04:56:52 PM »
but i can get ~6hrs from one 3000mah hr 9.6

that is alot of runtime. i might just buy another 1800mah 9.6 and be set. but il probably just buy one 3000mah 9.6 and be done with it!

thanks schwilly....

Offline Sean Gallemore

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Re:mme power question (part 2)
« Reply #9 on: December 15, 2003, 08:43:21 PM »
best we can do is test
yer welcome
good luck
peace
schwill

Offline chase

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Re:mme power question (part 2)
« Reply #10 on: December 16, 2003, 06:04:15 AM »
i think you need to reconsider these calculations....according to this thread...http://www.taperssection.com/yabbse/index.php?board=14;action=display;threadid=2460

the mme's power consumption is 5.5W http://www.apogeedigital.com/products/minime.php?show=features

I = P/V
5.5W/9.6V = 0.572A = 572mA

( Battery Capacity [mAH] / Current Draw [mA] ) * ( .80 )
3000mA / 572mA = 5.24h * 0.8 = 4.2 hours

personally unless you really really hate lugging SLAs around, i'd go pick up a 12V or even a 6V, definitely cheaper than those battery packs.  for example the battery i just built....

12V 7.5Ah will last me ~13 hours and although it's not tiny, neither is the mme.  i dunno, batteries are the last thing i like to skimp on, learned my lesson.

Offline Sean Gallemore

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Re:mme power question (part 2)
« Reply #11 on: December 16, 2003, 07:08:09 AM »
*tips hat*

you're absolutely right, thanx for clearing this up.  I just went and deleted what I posted so no one gets confused.

Offline caymanreview

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Re:mme power question (part 2)
« Reply #12 on: December 16, 2003, 07:50:29 AM »
i would rather spend a few extra bucks on 2-3 3000mah rc packs than ever lug around an sla!

 

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