Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-17-2017, 07:23 AM   #21
Registered User
 
2016 25' Flying Cloud
Fairfield , California
Join Date: Sep 2016
Posts: 905
Quote:
Originally Posted by uncle_bob View Post
Hi


Hook the charger wherever it's convenient. The one to each battery is just another piece of Wonderfull Nonsense ....

Bob
Thank you Bob, I went and pulled out the manuals on my chargers. One told me to hook the connections to the terminals on battery 1, the other to the neg on one and the pos on the other. The third manual wants to sell me a do hickey that hooks up to all four.
I like convenient. [emoji1]

Thanks,
Matti
Mattirs is offline   Reply With Quote
Old 12-21-2017, 07:21 AM   #22
Johnnyooo
 
Johnnyooo's Avatar
 
2015 23' International
Colrain , Massachusetts
Join Date: May 2017
Posts: 115
Images: 1
Check out nocco 7200....It has a lot of flexibility of use...One of the best on the market
Johnnyooo is offline   Reply With Quote
Old 12-21-2017, 09:16 AM   #23
Rivet Master
 
Mollysdad's Avatar

 
2017 26' Flying Cloud
Tampa , Florida
Join Date: Feb 2017
Posts: 7,754
Blog Entries: 1
Quote:
Originally Posted by Mattirs View Post
I went and pulled out the manuals on my chargers. One told me to hook the connections to the terminals on battery 1, the other to the neg on one and the pos on the other.
The only way that makes sense, is it covers batteries that are paralleled or in series. IF the batteries are in series, and they have different states of charge, then the charger will read the higher of the two and stop charging before the lower one reaches full charge.
Otherwise, just hook 'em up.
Mollysdad is offline   Reply With Quote
Old 12-21-2017, 06:21 PM   #24
3 Rivet Member
 
2017 25' International
Joliet , Illinois
Join Date: Nov 2013
Posts: 156
Quote:
Originally Posted by uncle_bob View Post
Hi


Hook the charger wherever it's convenient. The one to each battery is just another piece of Wonderfull Nonsense ....

Bob
I know it's no big deal for camper batteries but if you want to know the facts there is a difference on how you connect batteries to a charger.

Here is a simple article on how to do it.

https://www.google.com/url?sa=t&rct=...t22uxA-8_XKwEM
bel73 is offline   Reply With Quote
Old 12-22-2017, 07:03 AM   #25
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 15,832
Quote:
Originally Posted by bel73 View Post
I know it's no big deal for camper batteries but if you want to know the facts there is a difference on how you connect batteries to a charger.

Here is a simple article on how to do it.

https://www.google.com/url?sa=t&rct=...t22uxA-8_XKwEM
Hi

If you look at the numbers in that article, to get the level of imbalance they are talking about the wires would have to be *very* small (or really long).

Bob
uncle_bob is offline   Reply With Quote
Old 12-22-2017, 07:13 AM   #26
Rivet Master
 
dznf0g's Avatar
 
2007 30' Classic
Oswego , Illinois
Join Date: Jul 2010
Posts: 13,680
Images: 5
Quote:
Originally Posted by uncle_bob View Post
Hi

If you look at the numbers in that article, to get the level of imbalance they are talking about the wires would have to be *very* small (or really long).

Bob
In addition to the connections and wires, each battery has different internal resistance at birth. If you happen to have a battery with lower internal resistance as the first in line (as in figure 1), the rest will starve for amperage. It is always best to charge with a total SYSTEM resistance in mind, with positive charge line to bat #1 and negative charge line to the last in line...or vice versa. That way all batts are receiving equal amperage...although any differences in resistance between batts and among batts affect the total system amperage charge rate. But in a normal healthy system, that is usually not detrimental.
__________________
-Rich-

"If the women don't find you handsome, they should at least find you handy." - Red Green
dznf0g is offline   Reply With Quote
Old 12-22-2017, 07:18 AM   #27
Rivet Master
 
Troutboy's Avatar

 
2017 23' Flying Cloud
Parker , Colorado
Join Date: Oct 2016
Posts: 1,772
Images: 1
Best practice is to connect opposite terminals. There is a difference. Even if itís small a difference.

Short circuiting can occur for the various reasons described in this thread.

Why not just do it correct. I donít see whatís hard. Why Chance anything?!?

Is it really that hard to hook up positive on one and negative on the other?
__________________
Thanks,
Troutboy
Troutboy is offline   Reply With Quote
Old 12-22-2017, 10:31 AM   #28
Registered User
 
2016 25' Flying Cloud
Fairfield , California
Join Date: Sep 2016
Posts: 905
Troutboy- just wanting know what is correct when there is conflicting info in the various manuals
Matti
Mattirs is offline   Reply With Quote
Old 12-22-2017, 11:24 AM   #29
Rivet Master
 
Troutboy's Avatar

 
2017 23' Flying Cloud
Parker , Colorado
Join Date: Oct 2016
Posts: 1,772
Images: 1
Hey Matti,

My personal and professional experience around battery design and maintenance is what I go off of.

Working in heavy maintenance where we used batteries in various heavy equipment and for backup power supply, we always used trickle charge as described, no matter how many batteries. The idea was to force the charge through the single path, and not allow short circuiting.

I am not an expert, but have 20+ years working with and designing systems in industrial/manufacturing environments.

For the equipment/automotive side that is the way we always did it.

I have personally done this on my own toys, boats, RVs, etc and have never had issues.

There may be other approaches recommended that work. This way has worked for me and makes the most sense as well from an electron flow standpoint.

YMMV
__________________
Thanks,
Troutboy
Troutboy is offline   Reply With Quote
Old 12-22-2017, 12:01 PM   #30
Site Team
 
wulfraat's Avatar

 
2017 30' International
Broomfield , Colorado
Join Date: Apr 2009
Posts: 3,555
Images: 1
I just received (early Christmas!) a batteryMINDer model 128CEC1. 2/4/8 amp option. $150 bucks shipping included.

This is for my GMC 2500 diesel with 2 lead acid batteries. I don't use it much during the winter since it is a dedicated tow vehicle so I am going to leave it on a 4 amp trickle charge to keep everything topped off and sulfate free with a constant low-grade current.

The 128CEC1 is IP65 certified so my plan is to permanently mount it in the cavernous engine bay, and expose the 120v plug down near the bumper along with my block heater.

For the airstream, I am not going to bother because in the spring I will move to lithium. Lithiums are Ok sitting at a less than 100% charge, have very low self-discharge rates, and will be completely disconnected from the system when not in use.
wulfraat is offline   Reply With Quote
Old 12-22-2017, 01:11 PM   #31
Registered User
 
2016 25' Flying Cloud
Fairfield , California
Join Date: Sep 2016
Posts: 905
Quote:
Originally Posted by Troutboy View Post
Hey Matti,


There may be other approaches recommended that work. This way has worked for me and makes the most sense as well from an electron flow standpoint.

YMMV
Thank you, for your knowledge. Been one of those folks who has always dealt with just one battery.

Right now my charge connections are pos on bat 1 and neg on bat 2. Per your recommendation, I will leave it that way and forego buying the $30 dohicky they want me to buy to balance the charging. [emoji1] owe you a beer for the savings

Thanks,
Matti
Mattirs is offline   Reply With Quote
Old 12-23-2017, 06:44 AM   #32
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 15,832
Hi

There are a number of us who spent 40+ years doing this sort of thing ....

You need to understand the difference between things that matter and things that don't matter in your case. If you simply "do everything possible" that's going to be a *very* long list. Most of that list is not going to apply to your situation. It will make things harder (not easier) to do....

Bob
uncle_bob is offline   Reply With Quote
Old 02-04-2019, 12:15 PM   #33
SHE SHED
 
trikdacy's Avatar
 
2019 30' Classic
Brooklyn , New York
Join Date: Sep 2018
Posts: 183
Images: 4
I use a permanently installed Noco Genius 3500 on my TV hooked up to dual batteries. I connect the positive of one battery, and the negative of the other battery, so it's charging in parallel. Works perfectly. I plan to do the same configuration after my new Airstream is delivered.
trikdacy is offline   Reply With Quote
Old 02-04-2019, 03:19 PM   #34
Rivet Master
 
2018 27' International
Southeastern MI , Michigan
Join Date: Aug 2016
Posts: 2,344
Quote:
Originally Posted by wulfraat View Post
I just received (early Christmas!) a batteryMINDer model 128CEC1. 2/4/8 amp option. $150 bucks shipping included.

This is for my GMC 2500 diesel with 2 lead acid batteries. I don't use it much during the winter since it is a dedicated tow vehicle so I am going to leave it on a 4 amp trickle charge to keep everything topped off and sulfate free with a constant low-grade current.

The 128CEC1 is IP65 certified so my plan is to permanently mount it in the cavernous engine bay, and expose the 120v plug down near the bumper along with my block heater.

For the airstream, I am not going to bother because in the spring I will move to lithium. Lithiums are Ok sitting at a less than 100% charge, have very low self-discharge rates, and will be completely disconnected from the system when not in use.
Do you have dual batteries? Iíve read that they arenít always connected. I have a maintainer on my passenger side battery and hopefully thatís charging both!
Countryboy59 is offline   Reply With Quote
Reply


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
Solar trickle charger.... drboyd Generators & Solar Power 30 10-21-2019 11:23 PM
Can I leave my Interstate marine flooded batts on trickle charger in winter? bonginator Batteries, Univolts, Converters & Inverters 20 10-06-2012 11:06 AM
Great deal on Solar Trickle Charger ddruker Generators & Solar Power 1 08-28-2012 06:33 AM
Recommendations for trickle charger? bonginator Batteries, Univolts, Converters & Inverters 2 09-27-2010 09:10 AM
Trickle charger to replace Univolt jwaldin Electrical - Systems, Generators, Batteries & Solar 2 02-18-2003 10:12 AM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 08:35 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.