RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×


Reply
 
Thread Tools Display Modes
Old 10-24-2020, 06:54 PM   #1
Junior Member
 
Join Date: Apr 2017
Location: Doubel Oak Tx
Posts: 29
Boondocking just for traveling

Ok, just wondering if I can make it from Dallas area to New England. I have 2 interstate SRM-24 Marine/Rv Batteries on my TT. The spec says Amp Hours 81, so I guess x2 come to 162Amp Hours x 12 v =1944 watts.??? I am dumb to electric math etc. So if this is correct, my Fridge is residential and runs while traveling with the inverter running. My water heater can run propane or electric, water pump for water uses etc. Anyone have any ideas how long I might can go before I need shore power or generator if I opt to buy one. I would like to be able to avoid 1 night rv parks as 5 or 6 days to get somewhere to spend maybe 3-4 weeks adds up.



Thanks for any response in advance.
ronthet is offline   Reply With Quote
Old 10-24-2020, 07:25 PM   #2
Site Team
 
bikendan's Avatar
 
Join Date: Jan 2007
Location: Camano Island, Washington
Posts: 23,314
Since both batteries are not true deep cycle batteries but dual-purpose marine batteries, if you don't use the furnace, I would guess at least 2-3 nights before needing shore power or a generator.
__________________
Dan-Retired California Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity
bikendan is online now   Reply With Quote
Old 10-24-2020, 07:41 PM   #3
Senior Member
 
Join Date: Aug 2016
Posts: 132
You should be fine, but we always take our Honda generator EU2200i with us just in case. So glad we did as we needed it on our last trip. We had booked an electric site but it was too tight for our RV, so we took a no hookup site which was nice & roomy!
Gottaluvlife is offline   Reply With Quote
Old 10-24-2020, 07:59 PM   #4
Senior Member
 
Join Date: Jul 2017
Location: Clymer NY
Posts: 480
The vehicle charge system will recharge the RV batteries while you are driving, if the electrical system is properly set up. You should have no problems with overnight stops as long as you are not wasteful with your power usage. If you are doing the trip soon the bigger worry would be if the furnace runs a lot, it can use the batteries up on an overnight stop.
__________________
2020 Coachmen Mirada Select 37RB
2019 Ford Mustang
H&H Aluminum Car Hauler
Cricket RX5 Golf(?) cart
DougW is offline   Reply With Quote
Old 10-24-2020, 09:02 PM   #5
Senior Member
 
NMWildcat's Avatar
 
Join Date: Jun 2012
Location: Southern NM
Posts: 6,408
Buy a generator.
With a residential fridge I'll be impressed if your vehicle charging system keeps up while traveling.
Even my friends with huge solar systems always bring a generator when we boondock.
__________________
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD 4dr short bed Duramax w/allison
Reese Fifth Airborne air ride king pin coupler with Sidewinder
NMWildcat is offline   Reply With Quote
Old 10-24-2020, 09:17 PM   #6
Junior Member
 
Join Date: Apr 2017
Location: Doubel Oak Tx
Posts: 29
yes I can drive 10 hrs or so a day and my fridge is still A-Ok when I stop. It is a small Whirlpool, not a large one but big enough.
ronthet is offline   Reply With Quote
Old 10-25-2020, 01:26 PM   #7
Senior Member
 
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 3,387
If your traveling partners are agreeable, you could turn the inverter off and just put a bag of ice in the freezer and another in the lowest shelf of the refrigerator--all the rest of the food on the higher shelves or bottom drawers. Replace the bags every second day.
__________________
Larry

Sticks and Bricks: Raleigh, NC
2008 Cherokee 38P: at Ivor, VA permanently
Larry-NC is offline   Reply With Quote
Old 10-25-2020, 01:30 PM   #8
2013 Georgetown XL 377
 
Join Date: Feb 2016
Location: Stockholm, NJ
Posts: 46
Just remember with your marine deep cycle batteries you should only use 50% capacity so divide total amp hours by 2 then you will have useable amp hours.
Georgetown377 is offline   Reply With Quote
Old 10-25-2020, 02:03 PM   #9
Senior Member
 
Join Date: Jul 2017
Location: North of Seattle, WA
Posts: 9,797
Quote:
Originally Posted by DougW View Post
The vehicle charge system will recharge the RV batteries while you are driving, if the electrical system is properly set up. You should have no problems with overnight stops as long as you are not wasteful with your power usage. If you are doing the trip soon the bigger worry would be if the furnace runs a lot, it can use the batteries up on an overnight stop.
Especially if driving long days. If driving 8-10 hours per day even a puny 5 amp charge rate from the tow vehicle will replace 40-50 amp hours to the batteries.

To the OP:

To get a better idea of what your tow vehicle is ACTUALLY delivering to the batteries, take an actual measurement. Use a clamp type ammeter and with engine running at a fast idle and measure current flow into the batteries at the ground/negative cable.

Do this two times, one with refrigerator shut off, record reading, then again with the the refrigerator running.

A positive current flow will indicate charging and negative, discharge.

Remember, the refrigerator only runs a percentage of the time so when it's not running the TV alternator is replacing some or all of what it used.


If enough charge current isn't enough one alternative is to add a DC-DC charger like the 20 amp Renogy DCC-1212-20. Even with stock wiring it will yield 12-15 amp at the house batteries. $127 is a lot less expensive than a generator, ESPECIALLY if driving long days between stops.

As for using up the batteries overnight with furnace running, a lower thermostat setting, sleeping bags, and flannel 'jammies' or sweats can conserve a lot of propane AND battery. You really just need to keep temps inside high enough to keep things from freezing. (the dog will become very popular too )
__________________
"A wise man can change his mind. A fool never will."

"You only grow old when you run out of new things to do"

2018 Flagstaff Micro Lite 25BDS
2004 Nissan Titan
TitanMike is offline   Reply With Quote
Reply

Tags
boondocking, travel

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

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 12:49 AM.