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

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 01-23-2022, 08:52 AM   #1
Senior Member
 
Cameraman's Avatar
 
Join Date: Sep 2013
Posts: 128
Battery Questions

I have a Magnum MS2812 inverter that was installed in the 2nd quarter of 2015. I had to replace the 30 amp circuit breaker in the unit a little over a year ago because it kept tripping off. I also replaced our house batteries last year with new Lifeline AGMs. We have not had any issues with the system in the last year.

Last night, watching TV, it suddenly went dead. I checked the panel and found that we had apparently been inverting and the batteries were registering just 11.3 volts. I checked the inverter and found the 30 amp circuit tripped. I reset it and the batteries began bulk charging. They finally went over to absorb charging after almost 11 hours.

We are almost always hooked up to shore power… rarely boondock. We live in the coach full time and have not experienced any power outages in the parks we’ve been in the past year.

Questions
1. What type of damage was possibly done to the batteries by getting to this level of discharge? How do I go about checking for damage?

2. Any suggestions on how to prevent this happening again? The inverter panel is behind a door and we don’t check it every day. Without looking at the Magnum display I don’t know if the coach is operating off the inverter when we are plugged into shore power.

Thanks in advance for any input.
__________________
Rick & Nancy – FMCA# F476913
2006 Country Coach Allure 470 Siskiyou Summit, Cummins ISL 400; 2012 Buick Enclave
Cameraman is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-23-2022, 09:04 AM   #2
YC1
Senior Member
 
YC1's Avatar


 
Join Date: Jun 2011
Location: FL
Posts: 10,272
Batteries should be ok.

I can't think of any quick easy suggestion on the inverter letting you know. Remove the door blocking the readout? Make a small opening over the indicator lights of the panel.

Look at the manual for the inverter to see if there is some sort of built in connection for remote monitoring.

As for the 30 amp breaker failing it sounds like you are using some heavy loads over time such as a floor heater etc.

Is your inverter in a compartment that is ventilated properly? My compartment houses the inverter as well as a breaker panel and has a end with a vent and a thermostat/ snap disc to turn a fan on. The fan has failed once and that compartment gets very hot. Heat is hard on electronics.
__________________
Myron & Deborah
08 HR Endeavor 40 SKQ
400 Isl, 400 HP/// Now 450 HP
2016 Ford F150 Limited V6 with Ready Brake
YC1 is offline   Reply With Quote
Old 01-23-2022, 09:13 AM   #3
Senior Member
 
Join Date: Oct 2014
Posts: 5,166
If, indeed this was/is due to heavy loads on the internal transfer switch in the inverter/charger, there is an easy solution:


Install a second ATS. Priority to shore power, secondary to inverter output.


Foretravel and perhaps others do exactly this-- two ATS's, one for shore power/generator and the second for shore power/inverter.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is online now   Reply With Quote
Old 01-23-2022, 02:47 PM   #4
Senior Member
 
Cameraman's Avatar
 
Join Date: Sep 2013
Posts: 128
Thanks Myron and Brett. Interestingly, yesterday and today have been the coldest days we've had here in Florida so far. I don't think heat was the issue... though I've looked at that before and the area seems to have adequate ventilation. My guess it was an overload situation that I didn't catch.

The circuit breaker in the inverter handles up to 30 amps, so between all the items plugged in, I must have overloaded it. I can see the heater, keurig coffee machine and maybe something else... like a microwave or hair dryer... tripping the breaker without me knowing it. I'll need to be more careful in the future.

This inverter can supposedly allow up to 7200 watts to pass through. I'll have to look at rewiring it so I can split the loads on it.


I'm just hoping the batteries are OK.
__________________
Rick & Nancy – FMCA# F476913
2006 Country Coach Allure 470 Siskiyou Summit, Cummins ISL 400; 2012 Buick Enclave
Cameraman is offline   Reply With Quote
Old 01-23-2022, 04:55 PM   #5
Senior Member
 
Harry B's Avatar
 
Join Date: May 2006
Location: Central Florida
Posts: 1,146
On the Magnum control panel is a setting to change the voltage at which the inverter automatically disconnects from the battery. It might be set to low.

I am not near the my motor home to check the exact location of the setting but it probably would be under inverter setup. I believe default voltage is 12.2

Just going by memory at the moment, which is not the greatest these days
__________________
Harry
2015 Tuscany 40 KQ
2018 Equinox
Harry B is offline   Reply With Quote
Old 01-23-2022, 05:01 PM   #6
Senior Member
 
Join Date: Oct 2014
Posts: 5,166
Quote:
Originally Posted by Cameraman View Post
This inverter can supposedly allow up to 7200 watts to pass through. I'll have to look at rewiring it so I can split the loads on it.

Ya, could be as simple as moving a space heater or two to an outlet not on an inverter circuit.


BTW, couldn't edit my post above on two ATS's. The second ATS is from either shore power or generator (priority) and inverter as secondary.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is online now   Reply With Quote
Old 01-23-2022, 08:33 PM   #7
Senior Member
 
Monaco Owners Club
Join Date: Jan 2020
Posts: 1,313
A keurig alone can take 15 amps at 1500 watts so that with another medium load could definitely pop that breaker.
__________________
New to us 2000 Monaco executive 40 500hp tag
Biljol is offline   Reply With Quote
Old 01-24-2022, 05:51 AM   #8
Senior Member
 
Winemaker2's Avatar
 
Join Date: Nov 2006
Location: Western NY
Posts: 5,153
Battys left in a discharged state for extended periods areca problem. Short term less of an issue if recharged soon. It may have reduced your AH capacity a bit but in order to quantify you would have to have baseline data and rerun a capacity test... not a simple check w meter, etc. I would not worry unless you find operational issues.
__________________
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
Winemaker2 is offline   Reply With Quote
Reply

Tags
battery



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
12v Battery Source and Battery Questions Lord Xzavyor Vintage RV's 24 06-01-2017 10:49 PM
Coleman mach 3 air questions coleman air questions Thehsdguy RV Systems & Appliances 1 07-31-2016 04:44 AM
Questions, Questions... Nise52 Tiffin Owner's Forum 16 08-15-2015 02:13 PM
Questions....lots of questions..... C Johnson Class C Motorhome Discussions 20 11-02-2010 07:00 AM
Questions, questions! Hope you can help? Born2RV Fleetwood Owner's Forum 5 08-31-2009 05:53 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 08:41 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.