Batteries - Replacement - Page 2 - SailNet Community
 1Likes
Reply
 
LinkBack Thread Tools
post #11 of 16 Old 04-06-2013
Senior Member
 
deltaten's Avatar
 
Join Date: Oct 2012
Location: Lancaster Co. PA/ North East, MD
Posts: 830
Thanks: 10
Thanked 21 Times in 21 Posts
Rep Power: 8
 
Send a message via Yahoo to deltaten
Re: Batteries - Replacement

I just replaced mine w/an Interstate DC27 Marine. Rated at 180 ah at 25a and told it had near half again the cycles at the next lowest (160ah/$117.) one @ 300...so 450 cycles!
Was listed at $150.75. I got another 10% off 'cause I bought a new batt for the vehicle at the same time. Pays ta ask for a discount! Will be my primary/only batt, as my Beta 20 only takes a couple hundred cranking amps ta start

S/V Chrysalis
'80 Watkins 27
North East, MD
deltaten is offline  
Sponsored Links
Advertisement
 
post #12 of 16 Old 04-06-2013
Super Moderator
 
Maine Sail's Avatar
 
Join Date: Jan 2003
Location: Maine Coast
Posts: 6,684
Thanks: 32
Thanked 360 Times in 280 Posts
Rep Power: 10
       
Re: Batteries - Replacement

Quote:
Originally Posted by deltaten View Post
I just replaced mine w/an Interstate DC27 Marine. Rated at 180 ah at 25a and told it had near half again the cycles at the next lowest (160ah/$117.) one @ 300...so 450 cycles!

You are confusing Ah capacity and reserve capacity, they are not the same thing.

You have 180 minutes at 25A before the battery is dead or about 3 hours. Course you never want to completely kill the battery (a reserve capacity test takes the battery to 10.5V) so really you have about 1.5 hours at 25A.....

This is NOT the same as having a battery with 180Ah's. There is no such animal as a group 27 battery with 180Ah's or even 160Ah's for that matter. The average group 27 battery will have between 80 and 100Ah's of capacity at the 20 hour rate.

______
-Maine Sail / CS-36T


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.




© Images In Posts Property of Compass Marine Inc.


Maine Sail is offline  
post #13 of 16 Old 04-06-2013
Senior Member
 
deltaten's Avatar
 
Join Date: Oct 2012
Location: Lancaster Co. PA/ North East, MD
Posts: 830
Thanks: 10
Thanked 21 Times in 21 Posts
Rep Power: 8
 
Send a message via Yahoo to deltaten
Re: Batteries - Replacement

Thanks for the clarification, MS
as read from the label;
Pro 27M ECL series
CCA625, MCA 845; assuming that's cranking amps?
RC 180
RCC 100

So.. the second number...RRC100 is the one to look at; 100 min @ 25A ???
Is the time and amps linear? IOW would that be the same as 1000 min @ 2.5A ??

My meager energy budget is only (proposed) to be near to 5a/hr while running lites are on and when anchoring and interior lites are on; perhaps 3a....LED's run "cheap", yanno I don't plan of running the monitor while away from shore power; but, w/associated electronics might run 4a.
Approx 7a divided into the 25a =3.57 X 100 min/60 works out to all but 6 hours before I enter trouble zone and need ta recharge.
Close? Did I get it near ta right?


S/V Chrysalis
'80 Watkins 27
North East, MD

Last edited by deltaten; 04-06-2013 at 05:50 PM.
deltaten is offline  
 
post #14 of 16 Old 04-15-2013
Member
 
Join Date: Feb 2013
Location: Mobile, AL
Posts: 34
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Batteries - Replacement

I'm in the process of putting in 4 six volt batteries. I've used 2 in a series but looking for how to wire up 4. Know positive to negative. Do you hook up the actual feeds off positive and negative at the opposite ends of the chain. Also thinking about making it six if I can squeeze them in which I think will work. Have Balmar high output alternator. Later down the road want to add solar or wind
Thanks

Last Mango
Endeavour 38
Mobile AL
last mango is offline  
post #15 of 16 Old 04-15-2013
Senior Member
 
chef2sail's Avatar
 
Join Date: Nov 2007
Location: Maryland
Posts: 10,247
Thanks: 89
Thanked 192 Times in 184 Posts
Rep Power: 12
 
Send a message via AIM to chef2sail
Re: Batteries - Replacement

Quote:
Originally Posted by last mango View Post
I'm in the process of putting in 4 six volt batteries. I've used 2 in a series but looking for how to wire up 4. Know positive to negative. Do you hook up the actual feeds off positive and negative at the opposite ends of the chain. Also thinking about making it six if I can squeeze them in which I think will work. Have Balmar high output alternator. Later down the road want to add solar or wind
Thanks

Last Mango
Endeavour 38
Mobile AL
http://www.batteriesinaflash.com/wir...eries-parallel

Make sure you use the positive off one end of he bank and the negative off he other end of he bank to the panel so the batteries are used equally.
chucklesR likes this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
___________________________
S/V Haleakala (Hawaiian for" House of the Sun")
C&C 35 MKIII Hull # 76
Parkville, Maryland
(photos by Joe McCary)
Charter member of the Chesapeake Lion posse

Our blog-
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


ďSailing is just the bottom line, like adding up the score in bridge. My real interest is in the tremendous game of life.Ē- Dennis Conner
chef2sail is online now  
post #16 of 16 Old 04-16-2013
Glad I found Sailnet
 
Bene505's Avatar
 
Join Date: Jul 2008
Posts: 3,842
Thanks: 15
Thanked 54 Times in 53 Posts
Rep Power: 13
   
Re: Batteries - Replacement

I second MaineSail's point about getting a small solar panel.

On my first boat (Victory 21), I had a flexible solar panel strapped to the cabin top. Whenever I went for a weekly sail, the battery bank would be fully charged. The panel was small enough that I didn't need a charge controller.

And, IMHO, solar is a simple way to occasionally get the battery fully topped off.

Regards,
Brad

Regards,
Brad

.
.
Great minds discuss ideas;
Average minds discuss events;
Small minds discuss people.
.
The best minds discuss sailing (and a little bit of politics). I don't know why. It's a mystery!
.
Bene505 is offline  
Reply

Tags
batteries , battery , gc2

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Which 6v batteries? mtboat Gear & Maintenance 2 04-02-2011 04:42 AM
Li - Ion Batteries Raven38 Electrical Systems 1 05-29-2010 02:50 AM
AGM or GEL batteries? Kater Gear & Maintenance 20 03-12-2008 01:22 PM
Batteries tm3 Gear & Maintenance 20 12-08-2003 03:10 PM
AGM batteries has any one used them obiec Gear & Maintenance 4 04-04-2003 11:27 AM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome