Thread Tools Display Modes
Old 08-22-2016, 08:33 PM   #31
Site Team - Lou
Herk7769's Avatar
Join Date: Oct 2009
Location: South Eastern PA
Posts: 19,831
Originally Posted by pmsherman View Post
IGolf cart batteries reserve capacity numbers are determined in a similar manner but with a 75A load. To compare the reserve capacity of a golf cart battery to a marine hybrid one, the golf cart reserve capacity time needs to multiplied by at least 3, and somewhere between 3.1 and 3.3 may be a better multiplier because there's more losses inside the battery as the current draw rate increases. Phil
Phil, while I agree with most of what you stated, this one rocked me a bit.

This is the first I have seen anything about multiplying 6 volt RC by 3.

In fact the conversion factor between RC and Amp Hours (AH) is well established at 0.4167 times RC.

"Reserve Capacity (RC) is the number of minutes a fully charged battery at 80 o F (26.7 o C) is discharged at 25 amps before the voltage falls below 10.5 volts. To convert Reserve Capacity (RC) to Ampere-Hours at the 25 amp rate, multiple RC by .4167. More ampere-hours (or RC) are better in every case."

Ampere-Hour (or Reserve Capacity) - Pacific Power Batteries - About ...

What is your source to for that new information?

As to the 6 volt vs 12 volt debate, I think this quote from the Battery School at Northwest Batteries is most relevant:

"It would appear that there is no significant difference in capacity and voltage between these two examples. But this really is not the case. The plates designed for the T-105 use the same active material and alloy of the group 27 deep cycle batteries but both the T-105 negative and positive plates are 60% thicker than those found in the deep cycle 27 group sizes. The significance of this is that these 6 Volt batteries should have a longer lifespan than the two deep cycle 27 group sizes, if properly cared for. While the capacities are similar (220 versus 225 Amp Hrs.), battery longevity favors the two 6 Volt batteries. Why? Because a major cause of deep cycle battery failure is the shedding of active material from the battery plates."


Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
Herk7769 is offline   Reply With Quote
Old 08-23-2016, 08:42 AM   #32
Senior Member
Join Date: Aug 2012
Posts: 131
I was at that forum and after I went to him and said I had 2 6v batteries he said something about som would work. Mine have worked in 2 trailers very well. My 2 12 volters gave me more problems if 1 was weak it would draw the other down.

NorSnrub is online now   Reply With Quote

Thread Tools
Display Modes

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

» Virginia Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:12 AM.