Battery size info... - SailNet Community
 
LinkBack Thread Tools
post #1 of 7 Old 06-21-2007 Thread Starter
'72 Pearson 36
 
SVDistantStar's Avatar
 
Join Date: Aug 2006
Location: Charleston SC
Posts: 497
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Send a message via AIM to SVDistantStar
Battery size info...

Ive found some batteries for a good price that i want to use, but i cant figure out how many amp hours they are. Ive got a link with the info on them, but i cant figure out how many amp hours it is. It doesnt say outright, but it says 280 minutes at 25amps.

Trojan Battery Company - ProductSpecification
SVDistantStar is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 06-21-2007
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,447
Thanks: 5
Thanked 131 Times in 128 Posts
Rep Power: 11
   
The capacity varies with the discharge rate, which is why they give you twp sample cases:
280 minutes at a 25 amp rate, and 102 minutes at the 56 amp rate.

Read a few columns further and they also show you "5 hr rate AH 120" and "20 Hr Rate AH 150".

Meaning, if you drain the batttery 100%, you can suck 120 amp hours out of it in five hours. But if you don't suck as hard, you can pull 150 amp hours out of it. That's normal for all battery types, to supply more power under lower demand rates.

Remember those are also 100% discharge rates, if you're planning to cycle the batteries to 40-50% depth, cut them down to match.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 06-21-2007
Senior Member
 
Join Date: Aug 2006
Location: Arlington, VA
Posts: 1,853
Thanks: 0
Thanked 11 Times in 9 Posts
Rep Power: 10
   
Hello Sailor is right. But the simple answer to your question is: 150 amp hours.

Deep-cycle batteries are normally sized by the 20-hour discharge rate. In this case, that's 150AH.

Bill
btrayfors is offline  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 06-21-2007
Senior Member
 
Freesail99's Avatar
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Send a message via Yahoo to Freesail99
What was the good price ? I couldn't find it on the posted site.

S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Freesail99 is offline  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 06-21-2007 Thread Starter
'72 Pearson 36
 
SVDistantStar's Avatar
 
Join Date: Aug 2006
Location: Charleston SC
Posts: 497
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Send a message via AIM to SVDistantStar
My good price is at a local golf cart shop on 1-yo used batteries. $30 each. I got one that im going to use for now, and might get 2 more in a week or so for the boat. My current battery bank took a total dump on me a week ago, but thats what i get for the PO buying Walmart batteries.
SVDistantStar is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 06-21-2007
Senior Member
 
Freesail99's Avatar
 
Join Date: Feb 2006
Location: New Jersey
Posts: 4,507
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 10
 
Send a message via Yahoo to Freesail99
Sams club carries a good golf cart battery. If I remember correctly it's 225 ah and cost around $65.

S/V Scheherazade
-----------------------
I had a dream, I was sailing, I was happy, I was even smiling. Then I looked down and saw that I was on a multi-hull and woke up suddenly in a cold sweat.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Freesail99 is offline  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 06-21-2007 Thread Starter
'72 Pearson 36
 
SVDistantStar's Avatar
 
Join Date: Aug 2006
Location: Charleston SC
Posts: 497
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Send a message via AIM to SVDistantStar
For now im just going to use these. The same place can get Trojan T-105's for $100 each, so when i redo the whole boat im going to use 6 of them. For now i just want something cheap that will work. At $30 ea, i cant go too wrong, plus when i do stick the new Trojans in the Pearson, that leaves these batteries for my Hunter and Columbia.
SVDistantStar is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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
Installing a New Battery Bank Sue & Larry Gear and Maintenance Articles 0 09-26-2002 08:00 PM
Boat Battery Power East Penn Manufr. Gear and Maintenance Articles 0 01-18-1999 07:00 PM

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