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Old 03-02-2005, 12:15 PM
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BriEOD BriEOD is offline
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Another Battery

I'm thinking about adding a second battery. I'm upgrading the stereo and putting in 2 amps. Looking over things I don't think I'll be drawing enough to warrant enough to upgrade the alternator and I'm not looking to spend a fortune either. I've read three different threads so far. The best idea I saw was Diesel's with the relay (aka the collapsing circuit in the bomb world) but that also costs the most. I'll be doing it myself and have no problem working with electricity, although I'm not an EE. I'm curious what your opinion is on this if you don't mind sharing. Thanks.

Last edited by BriEOD; 03-03-2005 at 11:01 AM.
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Old 03-02-2005, 12:22 PM
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NatesGr8 NatesGr8 is offline
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I would go with a capacitor, they sell these at almost all car stereo stores. A few can be found here

A capacitor stores electricity and then uses it when the sytem is under high demand.
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Old 03-02-2005, 12:42 PM
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Thanks Nate I know what it is. But I don't think I need one. I am more concerned with being conservative with my DC power so I can start the engine after an hour or two of swimming and listening to the stereo at a reasonable level. I'll have a >1 yr old on the boat so I won't be playing the stereo at Kiss concert level decibels.
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Old 03-02-2005, 01:19 PM
Leroy
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I'm not jimn...but, I think the perko switch and second battery is pretty inexpensive and solid solution, but you still need to remember to move the switch around. With 1 yr old around you could use a little insurance. With an automatic relay then you think about nothing and your starting battery is always ok.

Last edited by Leroy; 03-02-2005 at 01:23 PM.
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Old 03-02-2005, 01:25 PM
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Here is the post Diesel had about the relay:
http://www.tmcowners.com/teamtalk/showthread.php?t=1322

I'm probably leaning toward just having a back up and a switch. But, I figured I'd see what everyones take is. Jim usually has a good pulse on these things.
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Old 03-02-2005, 01:29 PM
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BriEOD BriEOD is offline
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[quote=Leroy]I'm not jimn...QUOTE]

Are you sure? No one seems to know who "JimN" is. Maybe it is you and you don't know it!
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Old 03-02-2005, 03:28 PM
86PowerSlot190MC
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Quote:
Originally Posted by BriEOD
Here is the post Diesel had about the relay:
http://www.tmcowners.com/teamtalk/showthread.php?t=1322

I'm probably leaning toward just having a back up and a switch. But, I figured I'd see what everyones take is. Jim usually has a good pulse on these things.

Iím going with a battery combiner that will charge both batteries when the engine is running. Iím going to make Bank one the House battery and Bank two the Cranking battery by using three battery isolation switches. This is so my girlfriend doesnít switch the four position type switches to the wrong position and drain both batteries!!!! Basically Iíll hide the emergency combiner switch so she canít switch it accidentally!!!

I know this may be a little more $$$ but I figure itís worth every penny, if it saves my *** later down the line!!

Hereís a link to West Marine, they have a nice little 50 AMP combiner.
http://www.westmarine.com/webapp/wcs...productId=5461
Hereís some nice instruction on how they work. These instructions include both the three switch method and the four position switch method of installation.
http://www.yandina.com/acrobats/C50Data.pdf


Hope this info is helpful.
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Old 03-02-2005, 03:52 PM
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What do you figure it will cost to do that 86?
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Old 03-02-2005, 06:56 PM
86PowerSlot190MC
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Quote:
Originally Posted by BriEOD
What do you figure it will cost to do that 86?
3 x Battery Switch, Mini - Removable Key $25.99 each
1 x Battery Combiner - Cont. Rating 50A $79.99 each
1 x Battery - 12V Dual Purpose, 12.5"L x $77.99 each
6.75"W x 9.88"H
6 x Battery Cable - 4GA, Red, per Foot $3.19 per foot
3 x Battery Cable - 4GA, Black, per foot $3.19 per foot
4 x Heavy Duty Lug - 4/0 GA., 3/8", 2 pk $9.49 each

I think thatís it??

the prices are based on West Marine catalog!!! You may be able to get this cheaper elsewhere.
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  #10  
Old 03-02-2005, 06:59 PM
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Well now.. That sums it up.

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