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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems > Building a New battery system, need ALOT of help
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Thread: Building a New battery system, need ALOT of help Reply to Thread
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Topic Review (Newest First)
05-27-2012 10:36 AM
mitiempo
Re: Building a New battery system, need ALOT of help

Quote:
Originally Posted by Stumble View Post
Nola,

Take the batteries back to SAMs, and head to Jefferson Battery. On Jefferson highway right across from the Lowes at the Orleans parish/Jefferson parish line. Their prices are much better than even SAMs, and they provide great service. They can also walk you through the process of selecting the proper batteries.

I just replaced mine, and walked out with 4 6v deep cycle batteries, 225ah each, for I think $350, including new jumper wires. The starting bank is actually a deep cycle set, but has more than enough CCA's to start my 44hp engine.
That is a pretty comparable price to the Deka/East Penn 6 volts under the Duracell name at Sam's.

Nola

If you are installing the Echo Charge soon, as I think you are, you have several options for switching.

1/2/both switch works - only problem is that whichever battery bank you select is powering everything.

2 simple on/off switches - start for engine and its ancillaries only and house for everything else. Downside is it doesn't allow for starting from the house bank. This is what I have.

A 1/2/both switch and a simple on/off switch. Use the on/off switch for the engine, use #1 on the 1/2/both switch for the house and wire from # 2 to the output of the on/off switch. This allows you to start from the house when the
1/2/both switch is in the "both" position and the on/off is "off." Diagram below from Bill Trayfors shows it as well as Echo Charge wiring. This gives you the most flexibility.

The install of both the Echo Charge and the Victron monitor are very easy.

I haven't heard anything bad about the Iota chargers - I installed a DLS-55 just last week.
05-25-2012 11:38 AM
Stu Jackson
Re: Building a New battery system, need ALOT of help

Quote:
Originally Posted by nolasailor View Post
having to motor in and out of the marina,, about 2 miles,, i want to make sure the starter battery is only used for motor,,,, i want to keep it fool proof, would rather flip a switch to jump rather that have to remeber to flip back and forth all the time
There are a lot more complicated things on a boat than flipping a switch.

Run your alternator output to your house bank. Use the 1-2-B switch. ONLY when charging is present use B on the switch to charge your start bank. When charging is not present, use the switch in the position of your house bank. If you install the echo charger, you leave it on the house bank all the time.

What's so hard?
05-24-2012 04:48 PM
Stumble
Re: Building a New battery system, need ALOT of help

Nola,

Take the batteries back to SAMs, and head to Jefferson Battery. On Jefferson highway right across from the Lowes at the Orleans parish/Jefferson parish line. Their prices are much better than even SAMs, and they provide great service. They can also walk you through the process of selecting the proper batteries.

I just replaced mine, and walked out with 4 6v deep cycle batteries, 225ah each, for I think $350, including new jumper wires. The starting bank is actually a deep cycle set, but has more than enough CCA's to start my 44hp engine.
05-22-2012 08:42 PM
Cruisingdad
Re: Building a New battery system, need ALOT of help

I would have the 1-2-all switch in before anything else. You need a charger on that start battery. Not sure how you want to do it, but you need one. I would prioritize the 1-2-all over anything, then figure out how to charge starter batt, then new batts of same type, then echo charger, then battery monitor.

If you simply get your start battery and house battery fully charged before leaving the marina, and have the ability to charge them all via your alternator at anchor or when motoring, have good batteries, and a 1-2-all switch, you are out the cheapest money and probably with a system that works.

On mid-range Catalina models, they put one 4-d one selector 1, one 4-D on selector 2, and that is it. It has a good battery charger for both batteries and alternator charges both also. But again, you should try to remember to run off of one battery or the other to keep one in reserve. Many people don't. But for most, who are jus weekenders, it doesn't matter.

I personally think you are making this way too complicated and expensive, but my opinion my be th minority.

Brian
05-22-2012 08:29 PM
nolasailor
Re: Building a New battery system, need ALOT of help

Thanks for all the input,,, I should also tell you a lil more about the boat,,,it sunk during kartina,,, i rewired the entire boat,,, and no, i do not have a 1 2 both switch.. I did do the wiring the proper way, all new marine grade wire, new ac panel, new dc panel. The way i am hooked up now is the dc panel is hooked to house bank, and all motor componets{motor gauges, fuel pump, bilge fan, run off of a fuse panel feed by the starter bank,,,

The house bank has a hard wired battery charger when on shore power, and the start bank is only charged by the alt at this time, and the only way to connect the two is via jumper cables.

I put a budget together for this project that is not realistic, I Know i need to knock off a liquor store or bank to do it the best way, but what i realize now is that i need to take this in baby steps,,, and hope that i can add as i go, and hopefully not replace when budget allows.

so whith that being said,,

1. 2 sams clubs 90 amh flooded bought and paid for.
2. All wire from the original rewire is in place, and of ample size.
3. echo charger on order

So do i want a 1 2 both switch, or do i want to run a 200 amp celinoid to connect house to starter bank if starte bank fails???

And still need good charger,,, but been reading a few bad reviews on the iota chargers. the bad reviews say the newer units are not what they use to be, but all reviews brag on customer service.
05-22-2012 06:10 PM
Cruisingdad
Re: Building a New battery system, need ALOT of help

Quote:
Originally Posted by nolasailor View Post
having to motor in and out of the marina,, about 2 miles,, i want to make sure the starter battery is only used for motor,,,, i want to keep it fool proof, would rather flip a switch to jump rather that have to remeber to flip back and forth all the time
Then you are probably stuck with the echo charge idea. I don't have a problem with that, but it is not how I owuld spend my money for that use. You are probably $300 for EC and monitor, without install. You will also be looking into fixing your battery siuation (wets or agms). When it is all done, you will have a lot of money inviested in a system than what you would otherwise have if you simply got into the routing of changing the battery switch at sail/anchor.

But you need to do what feels right for you. And understand, this is coming from a guy that installed 520 watts of solar, an Outback MPPT charge controller, 4-4d Lifelines for house, an optima start battery for engines, two completely independent chargin and circuts for both, etc. So I personally go way over the top. But I cruise an LA. No way I would install that stuff for a weekender. It gets into my beer budget (snicker).

Brian
05-21-2012 08:40 PM
nolasailor
Re: Building a New battery system, need ALOT of help

having to motor in and out of the marina,, about 2 miles,, i want to make sure the starter battery is only used for motor,,,, i want to keep it fool proof, would rather flip a switch to jump rather that have to remeber to flip back and forth all the time
05-21-2012 07:37 PM
Cruisingdad
Re: Building a New battery system, need ALOT of help

Quote:
Originally Posted by mitiempo View Post
When the house bank is low that is a bad time to combine the banks - the good start battery can try to charge the depleted house bank and you can end up unable to start with either bank.
If the house bank is that low, and after switching the engine will not stary, just flip it over to '2' and start it. Won't matter. The amount of time we are talking about would be neglibigble until the engine is started and alternator kicks in.

Brian
05-21-2012 07:32 PM
mitiempo
Re: Building a New battery system, need ALOT of help

Quote:
Originally Posted by Cruisingdad View Post
BTW, just to clarify they switching to ALL, that is assuming he has been running off his house bank which is low and he switches to all to start the battery on the motor. Just wanted to clarify that.

Brian
When the house bank is low that is a bad time to combine the banks - the good start battery can try to charge the depleted house bank and you can end up unable to start with either bank.
05-21-2012 07:14 PM
Cruisingdad
Re: Building a New battery system, need ALOT of help

BTW, just to clarify they switching to ALL, that is assuming he has been running off his house bank which is low and he switches to all to start the battery on the motor. Just wanted to clarify that.

Brian
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