Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 26-05-2021, 23:26   #1
Registered User

Join Date: Mar 2014
Posts: 11
Another battery question with diagram

Here is a diagram of my battery set up. I want to increase the volts and still double the the amount hours. I canít seem to wrap my mind around how to connect all 5 batteries to do this? (Parallel/ series)
I have 6 batteries total but 1 is dedicated to the generator. Is that normal?
Iíve looked at diagrams online but canít find a 5 battery set up like this.
I have issues with re-starting the engine after it has run for a short while which is why I think I want/need(?) to increase the voltageÖ the strange part is it will re-start after sitting for about an hour and it fires right up after sitting on the hard over winter. The batteries are about a year old. Maybe it has nothing to do with the battery but thatís the direction Iím leaning. Old Detroit diesel 6V53.
Thanks for the suggestions
Attached Thumbnails
Click image for larger version

Name:	93332B68-261B-4B29-A795-AA1733D0EC03.jpg
Views:	137
Size:	401.6 KB
ID:	239279  
crawdaddy282 is offline   Reply With Quote
Old 26-05-2021, 23:34   #2
Moderator
 
Pete7's Avatar

Cruisers Forum Supporter

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 15,485
Images: 14
Re: Another battery question with diagram

What voltage is the engine and is the rest of the boat the same voltage?

What voltages are each of those 5 batteries?

Pete
Pete7 is offline   Reply With Quote
Old 26-05-2021, 23:53   #3
Registered User

Join Date: Mar 2014
Posts: 11
Re: Another battery question with diagram

I’m not sure the voltage of the engine?
The shore power is 50amp cord.
I’ll have to learn more about the whole electrical system to answer in full…
The batteries are marine/rv deep cycle:
SRM-31 675CCA 845MCA
The strange part is the fact that the engine won’t start after running for a little bit…
I can do more research and get better answers to your questions to assist me and will respond back with specifics.
crawdaddy282 is offline   Reply With Quote
Old 27-05-2021, 00:45   #4
Registered User

Join Date: Jun 2013
Location: canada
Posts: 3,674
Re: Another battery question with diagram

Sounds like you need to hire someone to take a look at the boat.

If the battery is dying while running it could be an alternator issue. The engine should have it’s own battery that never drains.
smac999 is offline   Reply With Quote
Old 27-05-2021, 01:40   #5
Senior Cruiser
 
StuM's Avatar

Cruisers Forum Supporter

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43 and OPBs
Posts: 11,735
Re: Another battery question with diagram

> I want to increase the volts


They are 12 Volt batteries. "Increasing the volts" by putting any in series will destroy just about everything electrical on your boat. (Assuming that everything is 12V as 99% of boats are)


Apart from that, we would need to know a lot more about your charging sources and existing wiring to hazard a guess at what is causing your engine start problems.


According to your diagram, none of the batteries are actually connected anywhere.
StuM is online now   Reply With Quote
Old 27-05-2021, 03:35   #6
Registered User

Join Date: Aug 2011
Location: Hampton Roads, VA
Boat: Bristol 27 #335
Posts: 7,517
Re: Another battery question with diagram

Putting the batteries in series will double, triple, etc the voltage and you don't want that.

Putting them in parallel, the voltage will remain the same and you will have more battery power over a longer period of time but as other have said your problem probably isn't the batteries.

When you say it won't start back up immediately do you mean it will crank over and not start or that it will not turn over?

BTW nice diagram but it doesn't tell much about your system setup.
thomm225 is offline   Reply With Quote
Old 27-05-2021, 05:40   #7
Registered User
 
Spot's Avatar

Join Date: Jan 2019
Location: Minnesota, USA
Boat: 21' trailer sailor & 8' sailing dinghy
Posts: 1,124
Re: Another battery question with diagram

Quote:
Originally Posted by thomm225 View Post
Putting the batteries in series will double, triple, etc the voltage and you don't want that.

Putting them in parallel, the voltage will remain the same and you will have more battery power over a longer period of time but as other have said your problem probably isn't the batteries.

When you say it won't start back up immediately do you mean it will crank over and not start or that it will not turn over?

BTW nice diagram but it doesn't tell much about your system setup.

The question about the engine above is important. You could be looking at anything from a weak starting battery to low fuel flow to faulty solenoid wiring or something more substantial happening in the engine as it heats up.


12V systems, 12V batteries, either 1 per system or parallel.


It might be worth getting all 6 charged and tested to make sure you don't have battery condition as a variable.
__________________
Big dreams, small boats...
Spot is offline   Reply With Quote
Old 27-05-2021, 05:47   #8
Registered User
 
flyingfin's Avatar

Join Date: Oct 2016
Location: Cape Haze,FL
Boat: Carver,Cobia,Nacra, Columbia
Posts: 752
Re: Another battery question with diagram

You need to hire a marine electrical tech quickly
flyingfin is offline   Reply With Quote
Old 27-05-2021, 06:36   #9
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 9,051
Another battery question with diagram

Quote:
Originally Posted by crawdaddy282 View Post
Iím not sure the voltage of the engine?
The shore power is 50amp cord.
Iíll have to learn more about the whole electrical system to answer in fullÖ
The batteries are marine/rv deep cycle:
SRM-31 675CCA 845MCA
The strange part is the fact that the engine wonít start after running for a little bitÖ
I can do more research and get better answers to your questions to assist me and will respond back with specifics.


Shore power has nothing to do with the engine batteries.

Clean all of the connections and make sure theyíre tight before you do anything else.

And I recommend you donít do anything else until youíve got a through understanding of what you have now.
Sailmonkey is offline   Reply With Quote
Old 27-05-2021, 07:36   #10
Registered User

Join Date: Nov 2019
Location: Southern Oregon
Boat: Storfidra 25
Posts: 11
Re: Another battery question with diagram

+1 for sailmonkeys “take”....I spent months studying 12 v electrical before I could ask an informed question. Tons of on line resources available.
Randy Bogardus is offline   Reply With Quote
Old 27-05-2021, 07:42   #11
Registered User

Join Date: Dec 2006
Location: Seattle
Boat: Cal 40
Posts: 2,767
Images: 7
Re: Another battery question with diagram

Setting up a charging system for that would be interesting.

Some google sources say the starter motor could handle increased voltage, but the solenoid would burn out, not to mention all your other electrics as someone already mentioned.

Basically not a good idea, figure out what's really wrong.

As a kid I would put two slot car transformers in series to make the cars go faster. We found out we could only run the the cars for a few seconds before the plastic holding the magnets and windings would melt into a solid blob. Once around the track then swap out cars.
cal40john is online now   Reply With Quote
Old 27-05-2021, 09:17   #12
Registered User
 
FionaJC's Avatar

Join Date: Dec 2016
Location: East Coast UK
Boat: Colvic 40' Ketch
Posts: 242
Re: Another battery question with diagram

As others have said, be careful.

I suggest you do nothing and ask someone more qualified than yourself, we all have expertise in our own chosen area and to dabble in areas that are unknown is dangerous.

If you dabble in areas unknown to you;
You could destroy everything electrical on your boat in an instant.
You could destroy your boat by starting a fire in slightly less time than an instant..
FionaJC is offline   Reply With Quote
Old 27-05-2021, 09:26   #13
Registered User

Join Date: Apr 2012
Posts: 317
Re: Another battery question with diagram

There are many installations of Detroit powered vessels that operate on 28 VDC. The genset could have its' own battery because it runs on 12 VDC. You need to determine what you have. Get service manuals for your vessel or hire a professional to help you.

boatdiesel.com has a forum on Detroits. They are more oriented to commercial boats.


Good luck with your vessel and welcome aboard!
oleman is offline   Reply With Quote
Old 27-05-2021, 09:31   #14
Registered User
 
Sailmonkey's Avatar

Join Date: Sep 2009
Location: Houston
Boat: '76 Allied Seawind II, 32'
Posts: 9,051
Re: Another battery question with diagram

Quote:
Originally Posted by oleman View Post
There are many installations of Detroit powered vessels that operate on 28 VDC. The genset could have its' own battery because it runs on 12 VDC. You need to determine what you have. Get service manuals for your vessel or hire a professional to help you.

boatdiesel.com has a forum on Detroits. They are more oriented to commercial boats.


Good luck with your vessel and welcome aboard!


28v?

Hatteras is infamous for their 32v systems....but 28v?
Sailmonkey is offline   Reply With Quote
Old 27-05-2021, 09:31   #15
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 8,853
Re: Another battery question with diagram

Quote:
Originally Posted by Sailmonkey View Post
Shore power has nothing to do with the engine batteries.

Clean all of the connections and make sure they’re tight before you do anything else.

And I recommend you don’t do anything else until you’ve got a through understanding of what you have now.

Correct.


While there is a ton of boat electrical material on the internet, plowing through it is not easy.


I recommend Charlie Wing's Boat Electrical Systems.


You seem to have a complete misconception of batteries and voltage. I think you'll agree that this is electricity 101 basics that you need to learn. Buy and read a good book. Like Wing's.


Otherwise, here's a long group of information that I've assembled and shared many times:


Electrical Systems 101 http://c34.org/bbs/index.php/topic,5977.0.html


Good luck.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, (Maple Bay Marina) SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Reply

Tags
battery

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diagram of my proposed upgrade with lithium house and AGM starter battery barrymac Lithium Power Systems 28 09-03-2021 16:18
New battery bank wiring diagram advice. Hoohaa Electrical: Batteries, Generators & Solar 17 10-07-2020 05:24
Simple Battery Isolator Diagram ? Cheechako Electrical: Batteries, Generators & Solar 35 22-07-2013 10:52
Battery Wiring Diagram - Help SailingChance Electrical: Batteries, Generators & Solar 10 06-04-2013 21:20
Battery Switch Wiring Diagram AaronJ Electrical: Batteries, Generators & Solar 20 24-11-2009 16:49

Advertise Here


All times are GMT -7. The time now is 22:07.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.