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  #1  
Old 04-25-2018, 10:54 PM
grantman grantman is offline
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Batteries for a big stereo setup

Currently I have an 2014 x30 with 4 rev 10's. 8 stock cabin speakers, and dual 10" subs in a custom enclosure. All is powered by 4 ARC audio amps. The previous owner did this sweet stereo setup. He installed it with 5 6v deep cycle batteries. Are all of these batteries necessary for this setup? The boat leans to the side with the all the batteries and we have problems with it proposing because of all the weight in the back. Keep in mind that each of these 6v batteries weighs about 65lbs. The previous owner was probably a big floater with the stereo cranking. But we wakeboard/surf most of the day. We have the stereo going when we anchor and have lunch for about 2-2:30 hours. Could I take some of the 6v batteries out or are all of these necessary to power this setup. Thanks, Grant
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Old 04-26-2018, 08:16 AM
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MattsCraft MattsCraft is offline
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I would think 1 of these would suffice. This is what I have with 2 amps, (600/6 & 750/1) I have to voltage drop issues.

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Old 04-26-2018, 08:47 AM
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JimN JimN is offline
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Quote:
Originally Posted by grantman View Post
Currently I have an 2014 x30 with 4 rev 10's. 8 stock cabin speakers, and dual 10" subs in a custom enclosure. All is powered by 4 ARC audio amps. The previous owner did this sweet stereo setup. He installed it with 5 6v deep cycle batteries. Are all of these batteries necessary for this setup? The boat leans to the side with the all the batteries and we have problems with it proposing because of all the weight in the back. Keep in mind that each of these 6v batteries weighs about 65lbs. The previous owner was probably a big floater with the stereo cranking. But we wakeboard/surf most of the day. We have the stereo going when we anchor and have lunch for about 2-2:30 hours. Could I take some of the 6v batteries out or are all of these necessary to power this setup. Thanks, Grant
6V? How are they wired and why are they in a boat that has a 12V electrical system? You can't wire five batteries and have 12V, although pairs of them could be wired in series and those pairs wired parallel to have more capacity- that's highly unusual. Can you post a photo with the brand and model of these batteries?
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Old 04-26-2018, 08:50 AM
MLA MLA is offline
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Are you sure its 5 6V? That does not add up so to speak. Maybe 4 6V and 1 12V for the cranking battery?

You could remove all but 2 6V, as it takes 2 to make it a usable 12V. Or remove all the 6V and install a single 12V. This would just reduce your anchor play time.
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Old 04-26-2018, 10:31 AM
curver900 curver900 is offline
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Quote:
Originally Posted by JimN View Post
6V? How are they wired and why are they in a boat that has a 12V electrical system? You can't wire five batteries and have 12V, although pairs of them could be wired in series and those pairs wired parallel to have more capacity- that's highly unusual. Can you post a photo with the brand and model of these batteries?
my bet is one is a spare? only 4 connected??? making a dual bank.. would be my guess... give you the best time sitting with the radio on that is for sure! or that 5th one is a 12V for just in case...
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Old 04-26-2018, 04:49 PM
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JimN JimN is offline
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I can't think of ANY good reasons to use 6V batteries. They all need to be mounted & connected, which takes space and extra parts. Then, there's the question of actual capacity, which a pair of good 12V batteries can provide in a much smaller footprint. Lots more points of failure with additional batteries, too.
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Old 04-26-2018, 04:52 PM
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Too many batteries for sure. I run almost the same setup, and run it off 3 normal batteries. 2 house 1 start.
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Old 04-26-2018, 05:17 PM
MLA MLA is offline
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A pair of 6V GC's wired in series = 12V and have the footprint of 2 G-24's and can have in the range of 250Ah. Wont get anywhere close to that with two g-24 in parallel. Heck, wont get that from two G-31/29 wired in parallel

Two packs of two 6V can yield 500ah.

They are more robust then any deep-cycle, so they make for a perfect house bank battery.
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Old 04-28-2018, 09:30 PM
grantman grantman is offline
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Yeah, I looked at it a little closer and it is 4 6v batteries and 2 12v batteries. The 6v ONLY powers the stereo and the 12v powers the boat and components. If I took out a pair of 6v batteries how long do you think the anchor/float time would be with 2 6v batteries?
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  #10  
Old 04-28-2018, 09:47 PM
MLA MLA is offline
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Quote:
All is powered by 4 ARC audio amps.
Going to need to know whats the approximate current amp draw of the amp, whats the battery Ah of the battery pack left. Even, its still an estimate.
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