Best battery for Scamp 13. - Page 4 - Fiberglass RV
Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-19-2020, 11:25 AM   #61
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
I’ll have the charge wizard here within a couple days. In the meantime I wonder if I should avoid plugging into shore power so as to avoid overcharging? I’ve been measuring about 13.1 V, so even a bit more than 2.15 Volts per cell. Is that bad? Should I avoid plugged into shore power?

(I did add some distilled water to the battery, the Trojan deep cycle, and it seem like it needed about almost maybe a quarter cup per cell.
zack sc is offline   Reply With Quote
Old 10-19-2020, 11:51 AM   #62
Senior Member
 
AC0GV's Avatar
 
Name: Kenneth
Trailer: Scamp
Wisconsin
Posts: 1,150
Registry
13.1 volts

Quote:
Originally Posted by zack sc View Post
Iíll have the charge wizard here within a couple days. In the meantime I wonder if I should avoid plugging into shore power so as to avoid overcharging? Iíve been measuring about 13.1 V, so even a bit more than 2.15 Volts per cell. Is that bad? Should I avoid plugged into shore power?

(I did add some distilled water to the battery, the Trojan deep cycle, and it seem like it needed about almost maybe a quarter cup per cell.
13.1 should not be a problem. Mine run 13.6 - 13.8 with out trouble. My RVs have all stayed under 14 VDC float. (14.4 equalizing)

Here is a charge chart that some of us use.
Attached Thumbnails
voltchart1.gif  
AC0GV is offline   Reply With Quote
Old 10-19-2020, 12:03 PM   #63
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
Thanks. To be more clear I should’ve said 13.1 V when nothing is plugged in and the battery is not charging. When I do hook up to shore power, then I would measure at least 13.7 volts, Which I guess comes from the progressive dynamics converter and just holds the battery at that higher voltage. Is that really OK to do for a few days even though the battery is already fully charged?
zack sc is offline   Reply With Quote
Old 10-19-2020, 01:05 PM   #64
Senior Member
 
AC0GV's Avatar
 
Name: Kenneth
Trailer: Scamp
Wisconsin
Posts: 1,150
Registry
I would call it OK

Quote:
Originally Posted by zack sc View Post
Thanks. To be more clear I should’ve said 13.1 V when nothing is plugged in and the battery is not charging. When I do hook up to shore power, then I would measure at least 13.7 volts, Which I guess comes from the progressive dynamics converter and just holds the battery at that higher voltage. Is that really OK to do for a few days even though the battery is already fully charged?
We will see what others say. This link has a lot of information, Charging info starts on page 18. Your car battery (not deep cycle) may be at 13-6 or .7 normally.
https://www.trojanbattery.com/pdf/Tr...UsersGuide.pdf
AC0GV is offline   Reply With Quote
Old 10-19-2020, 02:12 PM   #65
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
Thanks. Because if it did not hurt the battery I would just plug in and switch the fridge over to 110 V and save a little propane. For the next couple days. But if that would be bad for the battery to have that for progressive dynamics Charger keeping it at 13.7 the whole time, then I would rather just use the propane for the fridge
zack sc is offline   Reply With Quote
Old 10-19-2020, 02:22 PM   #66
Senior Member
 
AC0GV's Avatar
 
Name: Kenneth
Trailer: Scamp
Wisconsin
Posts: 1,150
Registry
Options

Quote:
Originally Posted by zack sc View Post
Thanks. Because if it did not hurt the battery I would just plug in and switch the fridge over to 110 V and save a little propane. For the next couple days. But if that would be bad for the battery to have that for progressive dynamics Charger keeping it at 13.7 the whole time, then I would rather just use the propane for the fridge
There are a couple of ways to do it, run on 12 vdc if it will (mine will not and I have tried to run on AC with an inverter, it is very inefficient.) If the battery were overcharging when plugged in, turn the converter breaker off or unplug it. I turn mine off any time I use ham radio equipment. I always have a solar panel on my battery without a regulator but also have a small load on. It holds about 12.6 all winter.
AC0GV is offline   Reply With Quote
Old 10-19-2020, 05:39 PM   #67
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
converter breaker off

Quote:
Originally Posted by AC0GV View Post
There are a couple of ways to do it, run on 12 vdc if it will (mine will not and I have tried to run on AC with an inverter, it is very inefficient.) If the battery were overcharging when plugged in, turn the converter breaker off or unplug it. I turn mine off any time I use ham radio equipment. I always have a solar panel on my battery without a regulator but also have a small load on. It holds about 12.6 all winter.
Thanks a lot. That sounds pretty easy. I will just turn the converter breaker off when the battery is fully charged and I want to use the fridge on shore power, 110 volts. That makes a lot of sense to me.
zack sc is offline   Reply With Quote
Old 12-16-2020, 04:25 PM   #68
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
absorption cycle

Quote:
Originally Posted by Jon Vermilye View Post
In one way I agree with Byron - If you purchase cheap batteries & replace them when needed, they will meet the needs of most.

On the other hand, if you want to get the most life from a lead acid battery, you must get them to a full charge as often as possible. One of the enemies of lead acid batteries is sulfation. To prevent this, you need to hit the battery hard enough to "beat" the sulfate deposits off the plates of the battery. This is best done by fully charging the battery, and periodically over voltaging it for short times (the equalization stage of a multi stage charger or converter).

Continually running between 50% & 80% without often going to 100% will definitely shorten the life of your battery, but this is what most do.

One of my favorite sites for battery information is Battery University.
Here is the page on Sulfation.
Thanks a lot Jon and Uncle Larry and everybody. Now that I have learned a little bit, I started measuring TV batteries as well and I found that my wife's Highlander was at about 12.45 volts and my 4Runner was about 12.6 volts, neither one of which is 100%. So in the interest of diminishing sulfation, I hooked up a smart charger (15 amp) and spent some time pushing through an actual absorption cycle. So I was wondering: is there anything wrong with using a charger to fully charge your TV batteries once every month or two? Water level seems okay on the 4Runner and I the Highlander I didn't check it because the strap pinned down the caps.
zack sc is offline   Reply With Quote
Old 12-16-2020, 04:49 PM   #69
Senior Member
 
John in Santa Cruz's Avatar
 
Name: John
Trailer: Escape 21, behind an '02 F250 7.3 diesel tug
Mid Left Coast
Posts: 2,374
Note that 12.6-12.7V is temperature dependent. if the battery is significantly colder than the nominal 68F they measure these things at, the numbers may well be several 10ths of a volt lower.
John in Santa Cruz is offline   Reply With Quote
Old 12-16-2020, 05:35 PM   #70
Senior Member
 
Name: zack
Trailer: scamp 13
California
Posts: 217
Thanks John. I’m in California, like you. It’s about 60į when I’m measuring the battery voltage.
So I am thinking that when I measure 12.4 or 12.5 V, I am like a 75% or less and probably subject to sulfation if it stays there for very long, I for a few days
zack sc is offline   Reply With Quote
Old 12-16-2020, 05:46 PM   #71
Senior Member
 
John in Santa Cruz's Avatar
 
Name: John
Trailer: Escape 21, behind an '02 F250 7.3 diesel tug
Mid Left Coast
Posts: 2,374
Quote:
Originally Posted by zack sc View Post
Thanks John. Iím in California, like you. Itís about 60į when Iím measuring the battery voltage.
So I am thinking that when I measure 12.4 or 12.5 V, I am like a 75% or less and probably subject to sulfation if it stays there for very long, I for a few days
how long had the Highlander been parked when it read 12.45V ?

Next time you drive it, when you get back, leave it running, and measure the voltage, it should be like 13.8V or so at idle with accessories (a/c, headlight, stereo) off. then shut it off and read it the next day before starting.
John in Santa Cruz is offline   Reply With Quote
Reply

Tags
battery, scamp


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Best Battery Mount? Kevin Woods Problem Solving | Owners Helping Owners 7 06-17-2020 08:01 AM
Best way to charge the battery? Vtec Electrical | Charging, Systems, Solar and Generators 20 06-19-2014 12:53 PM
Best battery for 2008 Scamp 13 jamessue Electrical | Charging, Systems, Solar and Generators 9 06-09-2014 02:29 PM
Which battery is best? JALEE Electrical | Charging, Systems, Solar and Generators 31 05-24-2014 03:09 PM
Best methods to fill holes & best glue Becky B Problem Solving | Owners Helping Owners 19 08-11-2012 08:14 PM

» Upcoming Events
No events scheduled in
the next 465 days.
» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 07:39 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.