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All Forums >> Radios, Batteries, Clubhouse and more >> Batteries & Chargers >> yet another battery question
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yet another battery question - 2/11/2003 2:07:15 PM   
JohnRC-RCU


 

Posts: 12
Joined: 2/7/2003
From: Uniontown, OH, USA
Status: offline 		If the maH and voltage are both the same, would it matter if I used AAA instead of AA batteries? This would be for a Futaba radio.

Thanks!
       Post #: 1

yet another battery question - 2/11/2003 8:02:29 PM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		The TX would work but you would have to find a way to pad the pack so the batterys didn't bang around. The AAA pack would be smaller than the AA pack.

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yet another battery question - 2/11/2003 9:40:35 PM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		Although the current capacity would be the same, the rate of discharge would differ. The smaller (AAA) cells cannot output their charge as fast as the larger (AA) cells. This won't make much difference in your transmitter, but in plane, this could cause your servos to get insufficient current when moving more than one servo at a time, under load, like aerobatic manouvers. If you are planning to use them for electric powered aircraft, this will become even more of an issue.


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yet another battery question - 2/12/2003 1:14:59 AM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		This might expain why I get better results with SC packs compared to AA packs.
Thanks

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yet another battery question - 2/12/2003 10:27:10 AM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		A general rule of thumb I've read repeatedly - the thicker the battery, the faster it can dump it's charge. I think I even saw Red quote this rule of thumb once.


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I try to learn from other people's mistakes...
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yet another battery question - 2/13/2003 12:59:56 AM   
Geistware



Posts: 12946
Joined: 4/9/2002
From: Locust Grove, GA, USA
Status: offline 		Do SC or C cells come in 2700maH capacity?

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Information on the building and flying of Radio Control Aircraft.
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yet another battery question - 2/13/2003 4:46:24 AM   
strato911



Posts: 1479
Joined: 9/17/2002
From: Winnipeg, MB, CANADA
Status: offline 		Using Sanyo's spec-search site (http://www.sanyo.com/batteries/specs.cfm), the highest capacity NiCd Sub-C seems to be the KR-2300SCE, highest capacity NiMH Sub-C seems to be the RC-3000HV, and the highest capacity NiCd C-size seems to be the N-3000CR. I didn't see any C-size NiMH.


_____________________________

I try to learn from other people's mistakes...
I won't live long enough to make them all myself.

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       Post #: 7

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