Reply
 
Thread Tools Display Modes
 
Old 11-17-2018, 10:38 PM   #1
Bronze Member
 
Join Date: Jun 2017
Location: FL
Posts: 32
Default 12v battery low voltage disconnect

What do you use to prevent your battery from discharging too low?
__________________

dvrdwn is offline   Reply With Quote
Old 11-18-2018, 12:10 AM   #2
Platinum Member
 
Join Date: Feb 2016
Location: Portland, Oregon
Posts: 979
Default Intellitec

I use the Intellitec main power disconnect relay with remote switch in convenient location at the sliding door. The solar charge controller is still connected but I can turn it off with an easy access CB/switch if parked inside.
Attached Images
File Type: jpg int (1 of 1).JPG (413.5 KB, 23 views)
__________________

__________________
George
2013 Sprinter VOILA
https://goo.gl/photos/2NCR3teXLSwNYSwN8
GeorgeRa is offline   Reply With Quote
Old 11-18-2018, 01:47 AM   #3
Bronze Member
 
michaelingp's Avatar
 
Join Date: Aug 2015
Location: MD
Posts: 46
Default

If you're looking for a manual disconnect then there are a number available. My old Roadtrek had one made by Intellitek. My new van doesn't have a disconnect, but it's easy to turn off all the devices that use power, except for the propane detector, for which you have to pull the fuse.

If you're looking for an automatic way to disconnect the battery when it was discharged too low, I think you may be disappointed. Even if you could get consensus of what "too low" means, it would be an expensive device to build since it would essentially have to determine how much energy you've pulled out of the battery since the last full charge.
michaelingp is offline   Reply With Quote
Old 11-18-2018, 01:56 AM   #4
Platinum Member
 
Join Date: Aug 2017
Location: CA
Posts: 830
Default Just returned from a 7 week trip WITHOUT the RV....

Quote:
Originally Posted by dvrdwn View Post
What do you use to prevent your battery from discharging too low?
Yes, that's correct, took our car across the USA this time... learned a lot in the process.

First, we saved about $800 in fuel and you know what....it paid for nearly all of our hotels.
Priceline....my friends....try it once and you'll be amazed at how much you will save.... just book the rooms from the car before arriving....

Second, while it hurts me to say this...the car is a LOT faster than driving the van and we could easily go further without feeling tired...and my wife will help...she doesn't like driving the RV and is not comfortable doing so... hence, makes me uncomfortable when she does.

Third, more agility....car can go anywhere and park in every place, plus it has heated seats which were very helpful in cold weather.

Fourth, we've taken the van on several trips and in 18 months have had three incidents of the dreaded "check engine light".... sometimes more than 150 miles or more from the nearest Mercedes Benz dealership....(not happy about this!)

Had the car for almost 5 years and it's a 2010 Subaru Outback... twice the mileage...and older than the van..... yeah, you guessed it....the check engine light has NEVER come on.
So, in my experience so far...yes, I have more confidence in my Subaru Outback than I do in the Roadtrek RS Adventurous as far as the vehicle drivetrain is.......two of the issues were the emissions system and the other was a glow plugs failure....

Thankfully, I have a brand new updated emissions system, compliments of Mercedes Benz and a brand new set of glow plugs.... other things with the house failed and needed brand new starting battery.....

SO.... I was a little concerned about leaving my RV in the driveway at home for almost two months....

Here's what my RV mechanic said to do.... push the disconnect switch for the batteries in the house, unplug the power cord, turn off the propane, switch off the refrigerator and prop open the door to the fridge....

Well, I return recently and voila, everything is fine.... vehicle starts, turned on the propane, reactivated the house batteries BEFORE plugging it in ( VERY IMPORTANT)... and fired up the generator for exercise.....

I guess it does help that I have a 160 watt ZAMP solar panels system on the roof...works whenever the sun shines.......

The ZAMP solar panels system was one of the best upgrades I ever made on my RV.

Good luck with your system...
Roadtrek Adventuous RS1 is offline   Reply With Quote
Old 11-18-2018, 02:29 AM   #5
Bronze Member
 
michaelingp's Avatar
 
Join Date: Aug 2015
Location: MD
Posts: 46
Default

Quote:
Originally Posted by Roadtrek Adventuous RS1 View Post

First, we saved about $800 in fuel and you know what....it paid for nearly all of our hotels.
Priceline....my friends....try it once and you'll be amazed at how much you will save.... just book the rooms from the car before arriving....
That comes out to about $16 a night for a hotel room. Was this in the U.S.?
michaelingp is offline   Reply With Quote
Old 11-18-2018, 02:52 AM   #6
New Member
 
Join Date: Oct 2018
Location: MM
Posts: 10
Default

Quote:
Originally Posted by dvrdwn View Post
What do you use to prevent your battery from discharging too low?
My Crossfit came with this:

http://precisioncircuitsinc.com/product/battery-guard/

It automatically cuts off the load side of the coach at either 12.2 volts, or 10.5 volts, depending on how its wired. Coachmen set it up at 12.2. I'd rather have a 12.0 volt cutoff.

It also has one of these:

http://precisioncircuitsinc.com/prod...ation-manager/

So apparently, either truck or house battery circuit can charge the other.
@Michael is offline   Reply With Quote
Old 11-18-2018, 03:08 AM   #7
Platinum Member
 
Join Date: Aug 2017
Location: CA
Posts: 830
Default

Quote:
Originally Posted by michaelingp View Post
That comes out to about $16 a night for a hotel room. Was this in the U.S.?

It was in the USA... how did you figure $16 per night..
Just curious??
Roadtrek Adventuous RS1 is offline   Reply With Quote
Old 11-18-2018, 03:10 AM   #8
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 6,436
Default

Quote:
Originally Posted by Roadtrek Adventuous RS1 View Post
It was in the USA... how did you figure $16 per night..
Just curious??

Take $800 and divide it by 49 nights.
booster is offline   Reply With Quote
Old 11-18-2018, 03:47 AM   #9
Platinum Member
 
Join Date: Feb 2016
Location: Portland, Oregon
Posts: 979
Default

Yes, flying could be even cheaper without a battery disconnect debate, for folks who went tangent see the OPís first post!
__________________
George
2013 Sprinter VOILA
https://goo.gl/photos/2NCR3teXLSwNYSwN8
GeorgeRa is offline   Reply With Quote
Old 11-18-2018, 06:15 AM   #10
Platinum Member
 
Join Date: Aug 2017
Location: CA
Posts: 830
Default Hmm, now I understand...but, that was just traveling to our destination...

Quote:
Originally Posted by booster View Post
Take $800 and divide it by 49 nights.
OK... let me explain something that I failed to explain...my apologies...

.. YES...we were gone for 7 weeks..I get where you got the 49 days.... however, we have a second home in Michigan near the great lakes and we stayed there for over one month.....

SO... our trip to and from one house and the next is about 16 nights in the road ...

I said it paid for a significant portion of the hotels....not everything.... BUT, with the Priceline app on our smart phones we saved more money on this trip than others....

Plus, we went a LOT of places.... round trip from our primary residence to Michigan and back again was a total of 7,746 miles...at an average of 31 MPG....vs. 18 MPG... what's more is that diesel fuel was .75 cents per gallon higher than diesel all the way across the USA.... average price unleased outside of California...2.19 to 2.69...diesel fuel was $1 more in some areas... At least 65 cents per gallon more.

Diesel fuel consumption at 18 MPG..7, 746 miles... more than 430 gallons of fuel...
Gasoline engine consumption. 31 MPG 7,746 miles...250 gallons of fuel...

430 gallons @ 3.19 average per gallon = $1,372
250 gallons @ 2.50 average per gallon= $ 650

Difference of $722

Even if we had taken the van ..16 nights on the road would have added another $25 per night for hook-ups... for another $400

Our average hotel room cost was around $65 to $70..

If you take the cost for the fuel of the RV plus the cost for the hook-ups.. it's closer to $1800...

Ironically...it is $1,690 to $1,770 for the car's total cost even with hotels... almost a tie.

We carried a cooler in the car and only ate out once per day.. breakfast at the hotel was included and we had plenty of food, sandwiches and snacks for lunch...

For all the places we went ..there were places in cities that would have been challenging for the van...

Finally...and I'm sure a lot of you will not believe this .. but in terms of cargo carrying capacity....we can actually carry more in the car than we can in the van....the RS Adventurous is more about carrying people.. not cargo... Sure, there's a lot of cabinets but they are small.... aside from placing things in the aisle..and tripping over them...we could carry larger items in the cavernous large space behind the two front seats in the station wagon.....
__________________

Roadtrek Adventuous RS1 is offline   Reply With Quote
Reply

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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 06:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.