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 > How many amp-hours?

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NRALIFR

Truck Camping Out West

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Posted: 05/27/20 02:43pm Link  |  Quote  |  Print  |  Notify Moderator

Well,I would probably choose two group 27 or 31 AGM’s, and build a box that can double as a step up into the cab-over bed if possible. Those type batteries will fit in a step/box with a rise (height) that will feel normal to you when you are using the step. 6v golf cart batteries could be used if you want, But they are taller than the group 27 and 31 batteries, so if you made a step box for them, it would probably feel unusually tall to you.

Flooded batteries always need a sealed and vented compartment, but AGM’s aren’t as prone to that as wet cells. Technically, I believe all batteries can vent under the right conditions, but it’s pretty rare for AGM’s. They are more expensive than flooded deep cycle batteries, but if you compare quality flooded deep cycle to quality AGM deep cycle, they aren’t that much more.

[emoticon][emoticon]


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srschang

Western NY

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Posted: 05/27/20 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

For our use in the Northern U.S., 2-100 ah lithium batteries and 4-100 watt solar panels is a bit more than what we need. Spent a couple months traveling to Alaska and back last year, and didn't need to plug in the entire trip. We didn't have a generator. The batteries didn't charge from the truck either, as I have that wire disconnected. We did plug in a couple nights at campgrounds to run the a/c when it was too hot for us.

Our typical daily power usage:
- watch tv for 2-3 hours at night
- lights
- water pump for showers and stuff
- electric compressor fridge
- listen to music for an hour or so in the morning
- 3 or 4 cups coffee Keurig on the inverter every morning
- wife dries hair on the inverter every morning

Typically the batteries are at 60 - 70% in the morning before the solar starts charging them back up.

* This post was edited 05/27/20 02:55pm by srschang *


2020 Ram 3500 SRW Crewcab Longbed Cummins, 2019 Northstar 12 STC

maria_bettina

Auburn, CA

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Posted: 05/27/20 03:09pm Link  |  Quote  |  Print  |  Notify Moderator

cewillis wrote:



Thank you for your input. I think we are going with a 200Ah battery... Now to find the "right" one [emoticon]

NRALIFR wrote:

Well,I would probably choose two group 27 or 31 AGM’s, and build a box that can double as a step up into the cab-over bed if possible. Those type batteries will fit in a step/box with a rise (height) that will feel normal to you when you are using the step. 6v golf cart batteries could be used if you want, But they are taller than the group 27 and 31 batteries, so if you made a step box for them, it would probably feel unusually tall to you.

Flooded batteries always need a sealed and vented compartment, but AGM’s aren’t as prone to that as wet cells. Technically, I believe all batteries can vent under the right conditions, but it’s pretty rare for AGM’s. They are more expensive than flooded deep cycle batteries, but if you compare quality flooded deep cycle to quality AGM deep cycle, they aren’t that much more.

[emoticon][emoticon]


Holy moley, Batman! That is a grand idea! We will need to move the cooler, but that placement below the cabover bed was annoying me anyway. having the battery there as a step is a bleeping GREAT idea!!!!!

srschang wrote:

For our use in the Northern U.S., 2-100 ah lithium batteries and 4-100 watt solar panels is a bit more than what we need. Spent a couple months traveling to Alaska and back last year, and didn't need to plug in the entire trip. We didn't have a generator. The batteries didn't charge from the truck either, as I have that wire disconnected. We did plug in a couple nights at campgrounds to run the a/c when it was too hot for us.

Our typical daily power usage:
- watch tv for 2-3 hours at night
- lights
- water pump for showers and stuff
- electric compressor fridge
- listen to music for an hour or so in the morning
- 3 or 4 cups coffee Keurig on the inverter every morning
- wife dries hair on the inverter every morning

Typically the batteries are at 60 - 70% in the morning before the solar starts charging them back up.


Wow! Alaska is on my To-Do list [emoticon] Thank you for all the detail about your panels and useage. Helps me make our decision. I think we might disconnect the truck battery too, if we already haven't. Might as well try it out before a huge trip. (Coffee that I don't have to wait for a boil sounds heavenly! Great info - thank you!!)

Kayteg1

California > Nevada

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Posted: 05/27/20 05:38pm Link  |  Quote  |  Print  |  Notify Moderator

maria_bettina wrote:

( No can do a gennie at this point; we are maxxed out on our payload. And really have nowhere to put it either.


The 1000W inverter generator weight about 25lb and takes less space than the battery.
If you will eliminate 1 battery having it, you have perfect solution.
With TC you can go several ways as technology is flooding us with new gizmos. You will find parallel thread how other member is trying to shave 3/4 tons of batteries from his TC and trailer rig.
Good luck finding the best for you solution.





maria_bettina

Auburn, CA

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Posted: 05/27/20 07:54pm Link  |  Quote  |  Print  |  Notify Moderator

Kayteg1 wrote:

maria_bettina wrote:

( No can do a gennie at this point; we are maxxed out on our payload. And really have nowhere to put it either.


The 1000W inverter generator weight about 25lb and takes less space than the battery.
If you will eliminate 1 battery having it, you have perfect solution.
With TC you can go several ways as technology is flooding us with new gizmos. You will find parallel thread how other member is trying to shave 3/4 tons of batteries from his TC and trailer rig.
Good luck finding the best for you solution.


Thank you!

theoldwizard1

SE MI

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Posted: 05/27/20 09:48pm Link  |  Quote  |  Print  |  Notify Moderator

For batteries, I recommend a pair of 6V golf cart batteries. That is about 225 AH @ 12V. These would be cheaper and store more energy than a pair of dual purpose marine/RV batteries. AGM golf cart batteries are available but are $$$ !

The real issue is recharging, especially when shaded or during short days. I think you are going to need more solar panels than you can practically mount on a TC.

This means a generator or a DC-DC battery charger (and running the truck engine for hours) is a must !

Don't forget a good battery monitor like a Victron BMV-700 !

Kayteg1

California > Nevada

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Posted: 05/27/20 11:07pm Link  |  Quote  |  Print  |  Notify Moderator

theoldwizard1 wrote:



Don't forget a good battery monitor like a Victron BMV-700 !


Looks like I saved 170 bucks buying this one for 4 bucks.
I think mine looks better.
[image]

jimh425

Western MT

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Joined: 06/11/2006

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Posted: 05/28/20 06:09am Link  |  Quote  |  Print  |  Notify Moderator

We can’t see yours though. What model did you buy?


'10 Ford F-450, 6.4, 4.30, 4x4, 14,500 GVWR, '06 Host Rainer 950 Dbl Slide, Torklift Talon tiedowns, Glow Steps, and Fastguns. Bilstein 4600s, Firestone Air Bags, Hankook DH-01 225/19.5 Fs, Curt front hitch, Energy Suspension bump stops.


jaycocreek

Idaho

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Posted: 05/28/20 07:28am Link  |  Quote  |  Print  |  Notify Moderator

Just a side note on your Dometic CFX cooler..I have seen countless reviews of all the portable compressor refer's seeing just how long they will run on battery power..

As an example,the CFX-50 will run about 60 hours on the 500 WH Jackery power station which is equal to a good group 24 battery at 50%..84 amp hours to watt hours is 1008wh but at 50%,which is he lowest you want to go with a 12V battery,it is 504wh or the same as a power station with 500 watt hours..

So in 60 hours of running the refer for the CFX refer alone,you would be out of juice or at 50% on that group 24 battery in alittle over two days...

I run my Engel refer on a stand alone battery with a volt readout and all the other stuff on other batteries...The refer alone draws more than people realize,depending on which model you get/temp and how often it is opened...Dometic public numbers are alittle deceiving compared to actual use..


1994 F-350 DRW /460/k&n intake /415# torque/lance 9.6/Engel compressor fridge/3 gr 27 batteries/Honda 2k/Honda 3K/WH Camo 2250/Reese solid bar extension/Buddy heater/3 inverters//Happi Jack tie downs /Firestone bags/Yamaha Rhino/Winch and Lockers

pianotuna

Regina, SK, Canada

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Posted: 05/28/20 12:14pm Link  |  Quote  |  Print  |  Notify Moderator

More amp-hours is better so long as there is a way to fully recharge the bank assuming lead acid jars.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

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