Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 31-10-2013, 17:46   #1
Registered User
 
d design's Avatar

Join Date: Oct 2013
Location: Whangaroa, New Zealand
Posts: 242
start batteries in a house bank

The local marine sparky was working on the electrical system on a boat I was working on. I asked him, "Why did you put automotive start batteries in the house bank?" he replied and said, "They say you should use deep cycle batteries but a lot of people dont bother".

Well ive been allways convinced that its a must to use deep cycle batteries. Does anybody here use start batteries in their house bank?
__________________

__________________
d design is offline   Reply With Quote
Old 31-10-2013, 18:01   #2
Registered User

Join Date: Sep 2009
Location: British Columbia
Boat: Nordhavn 46
Posts: 20
Re: start batteries in a house bank

Automotive start batteries will fail pretty quickly if used heavily for "house" duties. Keep him away from my boat. Just cuz lots of people don't bother does not make it a very good idea
__________________

__________________
Steve Strand is offline   Reply With Quote
Old 31-10-2013, 18:02   #3
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,365
Re: start batteries in a house bank

No, but I did once by necessity. While cruising mexico my new 8D shorted out bad. I went with two mexican group 27 car batteries. Didnt really have an issue, but didnt have a lot of draws on that boat either. :>)
Sounds to me like you need a new electrician. It may matter less on powerboats, maybe he's used to working on those.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is online now   Reply With Quote
Old 31-10-2013, 18:06   #4
Registered User

Join Date: Jul 2008
Location: Vancouver Island
Boat: 27ft catalina
Posts: 492
Re: start batteries in a house bank

i see it many times people doing what they shouldnt be doing with electrical. deep cycle batteries are designed to be discharged and recharged frequently whereas start batteries are designed to spin over an engine for a few seconds then get recharged right away. using start batteries for house bank is a sure way to kill a battery.
__________________
michaelmrc is offline   Reply With Quote
Old 31-10-2013, 18:13   #5
Marine Service Provider
 
Scott Berg's Avatar

Join Date: Jul 2011
Location: Aboard
Boat: Seaton 60' Ketch
Posts: 959
Re: start batteries in a house bank

Let's see, the electrician knows better but does it anyway? Worse than ignorance is apathy… keep him away from my customers!
__________________
Scott Berg is offline   Reply With Quote
Old 31-10-2013, 18:39   #6
Registered User

Join Date: Jul 2013
Location: Usually South Florida these days
Posts: 825
Re: start batteries in a house bank

If the bank only sees use for an hour or two, now & then, & always gets recharged promptly, then car batteries are OK. If the boat sees overnight use, rather than just lunch at the sand bar every other weekend, then you want deep cycle batteries.
__________________
pbiJim is offline   Reply With Quote
Old 31-10-2013, 18:48   #7
Marine Service Provider

Join Date: May 2012
Location: New Orleans
Boat: We have a problem... A serious addiction issue.
Posts: 3,940
Re: start batteries in a house bank

I don't even have a starter battery on the boat. We have enough CCA from a deep cell to crank the engines. The starter battery is 8 years old now and going strong.
__________________
Greg

- If animals weren't meant to be eaten then they wouldn't be made of food.
Stumble is offline   Reply With Quote
Old 31-10-2013, 18:50   #8
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: start batteries in a house bank

Depends on how deep you discharge.

I am not sure deep cycles were common say 20 years ago and yet people sailed their boats (with car batteries in house banks) somehow.

So it is OK to use plain batteries in house banks.

It is also OK to have a wooden mast, cotton sails and a kerosene stove.

b.
__________________
barnakiel is offline   Reply With Quote
Old 31-10-2013, 18:55   #9
Registered User
 
d design's Avatar

Join Date: Oct 2013
Location: Whangaroa, New Zealand
Posts: 242
Thanks for the replies. At least he seemd like a nice guy. Hope hes not on these forums lol
__________________
d design is offline   Reply With Quote
Old 31-10-2013, 19:50   #10
Registered User

Join Date: Jul 2013
Location: Usually South Florida these days
Posts: 825
Re: start batteries in a house bank

On small & medium sized motor boats, you also need to worry about how the plates inside the battery are supported mechanically. Constant hard pounding on a car battery, with plates that are only attached at the top, is a sure formula for a short battery life. I've seen a brand new Sears Die Hard killed in less than 2 weeks. It was installed in a 22-foot center console fishing boat that belonged to a guy that liked to get to his favorite fishing spots in a hurry, even in fairly heavy seas.
__________________
pbiJim is offline   Reply With Quote
Old 31-10-2013, 20:04   #11
Marine Service Provider
 
Scott Berg's Avatar

Join Date: Jul 2011
Location: Aboard
Boat: Seaton 60' Ketch
Posts: 959
Re: start batteries in a house bank

Quote:
Originally Posted by barnakiel View Post
Depends on how deep you discharge.

I am not sure deep cycles were common say 20 years ago and yet people sailed their boats (with car batteries in house banks) somehow.

So it is OK to use plain batteries in house banks.

It is also OK to have a wooden mast, cotton sails and a kerosene stove.

b.
My 2nd and third cruising boats had kero stoves (ouch) albeit with alloy spars and dacron sails, but I've used golf cart batt's (deep cycle) for 30+ years as have many cruisers I know… the heavy plates really are important… I do agree that not every change is for the better but heavy plate golf cart or floor polisher batteries have been the standard for offshore cruising at least since the last 1970's
__________________
Scott Berg is offline   Reply With Quote
Old 31-10-2013, 21:17   #12
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: start batteries in a house bank

You don't say what your boat is or electrical usage is. If it is a simple boat and you are only starting an engine and occasionally using a cabin light or two or charging a laptop from a small inverter, then an automotive battery may be just fine. If any more than this, then it isn't fine.

Mark
__________________

__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 10:17.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.