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Old 12-23-2013, 10:45 AM
payne04 payne04 is offline
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Battery's

Have a 01 mastercraft 205v. Was wonder what battery's I would need or what to do with eletrical system for the upgraded stereo I put in.. I currently got 3 jl 300/4 slash amps and 1 500/1 ... Only have 2 battery's right now.. What do you recommend to do
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Old 12-23-2013, 10:49 AM
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mikeg205 mikeg205 is online now
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What's the output of your alternator?
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Old 12-23-2013, 12:29 PM
payne04 payne04 is offline
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Stereo

It's the stock one ...
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Old 12-23-2013, 02:46 PM
supreme112279 supreme112279 is offline
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I have 2 optima yellow tops. One for the boat and one dedicated to the stereo. It's a large stereo and I haven't had any issues listening to the radio for hours.
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Old 12-23-2013, 03:01 PM
MLA MLA is offline
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Quote:
Originally Posted by payne04 View Post
Have a 01 mastercraft 205v. Was wonder what battery's I would need or what to do with eletrical system for the upgraded stereo I put in.. I currently got 3 jl 300/4 slash amps and 1 500/1 ... Only have 2 battery's right now.. What do you recommend to do
Are they isolated by a dual-bank battery switch? Do you regularly spend time playing the system while at anchor? The length of time this is done, is going to drive your battery selection, mainly on the "house" side of the switch. For a primary cranking battery, you cant go wrong with a plan old group-24 lead acid marine cranking battery.

For a dedicated house battery, you need to decide what your needs are going to be in terms or amp hours.
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Old 12-23-2013, 04:25 PM
payne04 payne04 is offline
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Do not sit and play at all... I have to 2 battery's and they are in switch it has 2 0r 1 or all... Not real sure how to set the battery's up like you guys are talking..(house and cranking battery)
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Old 12-23-2013, 05:52 PM
MLA MLA is offline
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Originally Posted by payne04 View Post
Do not sit and play at all... I have to 2 battery's and they are in switch it has 2 0r 1 or all... Not real sure how to set the battery's up like you guys are talking..(house and cranking battery)
If your switch is wired optimal, then its already set up that way. It would be up to you as the operator to designate which one is house and which one is primary cranking.

Based on the above info, I would go with 2 group-24 dual-purpose marine batteries.
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Old 12-24-2013, 10:32 AM
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Originally Posted by payne04 View Post
Do not sit and play at all... I have to 2 battery's and they are in switch it has 2 0r 1 or all... Not real sure how to set the battery's up like you guys are talking..(house and cranking battery)
With your setup and the fact that you don't spend the day in party cove, any decent pair of combo deep cycle/start batteries will work just fine.
If your setup works fine then I wouldn't worry about it and I'd leave the Perko switch pulling/ charging both batteries.
To run one dedicated for house one for start, isolate those loads to each battery directly preferably with some distribution blocks. At this point, the + to the starter will charge only the battery it's hooked to. Then link the 2 batteries with an ACR auto charging relay and the alt will charge both with the engine running but isolate them once the voltage supply drops below charging volts, 14+V.
This setup has worked well for me and its totally hands off. No switching required.
I installed a shore power charger as well though just to keep the batteries fully charged and maintained but it worked fine without it the first year.
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Old 12-23-2013, 05:28 PM
rydog rydog is offline
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I actually was just curious about this subject. I have a 02 X-Star that will have a Syn4, Syn2, and 500 watt polk amp this next year. I currenty have 2 batteries hooked up to a perko switch so I save one for starting the boat and the other to run my audio at the sand bar. Should I upgrade to 3 batteries for this next summer? I ran 2 last summer with two Syn 4s, but now I will have the Syn4, Syn2, and polk 500 watt amp. My alternator is stock and I spend a decent amount of time at the sand bar.
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Old 12-23-2013, 05:58 PM
MLA MLA is offline
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Originally Posted by rydog View Post
I actually was just curious about this subject. I have a 02 X-Star that will have a Syn4, Syn2, and 500 watt polk amp this next year. I currenty have 2 batteries hooked up to a perko switch so I save one for starting the boat and the other to run my audio at the sand bar. Should I upgrade to 3 batteries for this next summer? I ran 2 last summer with two Syn 4s, but now I will have the Syn4, Syn2, and polk 500 watt amp. My alternator is stock and I spend a decent amount of time at the sand bar.
Theres no yes or no answer. The need for more battery amp hours is dependent on how long you want to play and how hard you want to play. But, its always best for the batteries to have more batteries that are cycled shallower, then less batteries that are cycled deeper. If you regularly hang out at the party spot, then adding a 2nd house battery (more Ah's) could be a benefit. Then it may be time to think about some shore charging for that house bank and not rely on the alternator to recharge.
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