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Old 03-31-2020, 11:38 PM #1
theCROM theCROM is offline
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Fridge Install?

I just got a fridge from Costco that looks to be a rebrand of a Alpicool fridge for my wife for her to use with breast milk and camping/road trips. I currently just have a standard interstate(brand new) battery and was curious if I should get a new battery for it and if I did could I use the stockish interstate battery side by side with a new deep cycle battery? I saw it recommended to wire the fridge straight to the battery as well and was just going to buy the ARB kit. Is there anything else I should be looking at getting or doing to get the most out of it? Could I run it initially off the interstate battery until we can grab a new $300 deep cycle battery without killing the battery to quickly?
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Old 04-01-2020, 12:15 AM #2
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Quote:
Originally Posted by theCROM View Post
Could I run it initially off the interstate battery until we can grab a new $300 deep cycle battery without killing the battery to quickly?
I ran mine off the stock battery with the fridge wired directly for a long time. No issues.

I didn’t keep it on all the time. Just grocery store runs, road trips, and breast milk as well.
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Old 04-01-2020, 06:31 AM #3
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Depends on how much draw it has too, do you how many amps it pulls when on?

I run my IndelB on a goal zero battery pack next to the fridge. I have the goal zero being charged from the 12V in the cargo area when the vehicle is on.
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Old 04-01-2020, 01:15 PM #4
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That fridge look pretty affordable... are these compressor based fridges or the peltier based units that can only do 40F below ambient?

If you dont want to run off the car, you can always consider using a portable.

I metered my ARB 50 for 24 hours, and it used about 350 watt hours.

A 100Ah deep cycle is about 1200 watt hours of energy, meaning you are good for about 2-3 days of continuous use without charging.

I have a dual battery, but I made my own portable battery pack for the times I use it outside of the truck.


Last edited by Bumbo; 04-01-2020 at 01:20 PM.
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Old 04-01-2020, 02:21 PM #5
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@theCROM how often will you be needing to run it overnight?

The stock size battery should have enough capacity to run your fridge overnight on an occasional camping trip, the issue is that the stock type battery doesn't like being discharged that deep so everytime you do it you are shortening the life of your battery.

My stock battery lasted about 6 months running my fridge 24/7 with some maintenance charging before i started to see reduced performance. so if you are just doing an occasional camping trip your stock type battery is fine, just maybe carry a jump pack for security

the next best step is to replace your starting battery with an AGM type, and when doing this you can also increase the capacity with a larger battery. you will need a voltage booster to charge correctly, but the AGM battery isn't as negatively impacted when you discharge it.

your use case doesn't sound to me like you need dual batteries, unless you just have the money and want the security; what i would do in your case is just carry a reliable jump pack if this was just an occasional thing or upgrade to an AGM if more common



yes run a dedicated 12v outlet, the stock wiring is small and causes some fridges to shutoff from voltage drop




also, don't get a goal zero, there are better options for less money
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Old 04-01-2020, 03:31 PM #6
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Before my 2 battery setup I would run my Indel B at nights from a Stanley 1000/500 amp jump pack. I could run for 18 hours off that pack and plug in while driving to recharge.
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Old 04-01-2020, 03:52 PM #7
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Quote:
Originally Posted by OYOTA TRD View Post
I ran mine off the stock battery with the fridge wired directly for a long time. No issues.

I didn’t keep it on all the time. Just grocery store runs, road trips, and breast milk as well.
Thanks, hopefully I'll be good for a while then!
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Old 04-01-2020, 03:59 PM #8
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Quote:
Originally Posted by hLARP7 View Post
Depends on how much draw it has too, do you how many amps it pulls when on?

I run my IndelB on a goal zero battery pack next to the fridge. I have the goal zero being charged from the 12V in the cargo area when the vehicle is on.
Honestly I have no clue.
The specs say its rated for 3.75A/1.875A and total input power is 45W. I cant find a whole lot if information on them online either so im kinda running on hopes lol. The unit is called a Massimo CX50.
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Old 04-01-2020, 04:02 PM #9
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Quote:
Originally Posted by KWSRStorm View Post
Wheter or not it will kill the battery depends on the size of the fridge amd how long youll be running. The fridge will run more if there is alot of empty space. The cold items in the fridge help keep it cold. So 45qt a fridge full of cold beer will run less than a 45dt fridge with only a few packs of breast milk.

Also, the fridge wont run with the car off unless you convert the cig lighter to be run directly off the battery.

I have an alpicool 45qt. I run it off of my aux battery. Its a great fridge but the voltage readings are terrible. They are off by 3 volts (not an issue because it runs fine, just wouldnt trust the battery protection thats built in).

If youre looking at replacing a good battery with a new AGM one(and the fridge is your main reasoning for that) you could just get a goal zero battery pack (or similar) and leave it in the back. It adds some other functions vs just replacing you oem battery(portable, can run lots of other devices, good for.home emergency in a pinch). Plus you can just leave it plugged into the cig adapter and not modify it (ie wont risk killing main battery) and just run the fridge off of that. While you drive, it will charge the yeti/run the fridge, when the cars off the fridge just runs off of the yeti.

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I might try this. I was watching some reviews for the Jackery recently and it looks to be a solid unit and I could use it for multiple things where as getting a new battery after just replacing our OEM battery would sound counter intuitive.
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Old 04-01-2020, 04:05 PM #10
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Quote:
Originally Posted by Bumbo View Post
That fridge look pretty affordable... are these compressor based fridges or the peltier based units that can only do 40F below ambient?

If you dont want to run off the car, you can always consider using a portable.

I metered my ARB 50 for 24 hours, and it used about 350 watt hours.

A 100Ah deep cycle is about 1200 watt hours of energy, meaning you are good for about 2-3 days of continuous use without charging.

I have a dual battery, but I made my own portable battery pack for the times I use it outside of the truck.

Yea i got the 50L for 300$. the 40L was only 260$ and I think the 30L was around 220-240$ so not a bad deal. It says its compressor based and can be used as a freezer. We just hooked it up today to a wall outlet to see if it actually cools down pretty low or not. How did you go about making your own portable and what is the cost comparison to buying a premade one like a Goal Zero or Jackery?
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Old 04-01-2020, 04:09 PM #11
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Quote:
Originally Posted by jhguth View Post
@theCROM how often will you be needing to run it overnight?

The stock size battery should have enough capacity to run your fridge overnight on an occasional camping trip, the issue is that the stock type battery doesn't like being discharged that deep so everytime you do it you are shortening the life of your battery.

My stock battery lasted about 6 months running my fridge 24/7 with some maintenance charging before i started to see reduced performance. so if you are just doing an occasional camping trip your stock type battery is fine, just maybe carry a jump pack for security

the next best step is to replace your starting battery with an AGM type, and when doing this you can also increase the capacity with a larger battery. you will need a voltage booster to charge correctly, but the AGM battery isn't as negatively impacted when you discharge it.

your use case doesn't sound to me like you need dual batteries, unless you just have the money and want the security; what i would do in your case is just carry a reliable jump pack if this was just an occasional thing or upgrade to an AGM if more common



yes run a dedicated 12v outlet, the stock wiring is small and causes some fridges to shutoff from voltage drop




also, don't get a goal zero, there are better options for less money

Thanks, yea the goal zeros are crazy expensive, Id get one of the newer brands that are way cheaper as I've seen a few reviews on them. I'll probably just wire it directly as you state as I probably wouldnt need any long term usage. Probably just let it cool down and cut it off while sleeping at night and if/when it kills the battery I'll use it as a excuse to buy a $$$ deep cycle battery. We carry a battery jumper with us just incase we get stranded when camping already so this would also probably be my cheapest option.
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Old 04-01-2020, 04:10 PM #12
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Quote:
Originally Posted by theCROM View Post
I might try this. I was watching some reviews for the Jackery recently and it looks to be a solid unit and I could use it for multiple things where as getting a new battery after just replacing our OEM battery would sound counter intuitive.
I use a Jackery 500 to power my Dometic fridge and just charge the Jackery with the 12 volt outlet in the back. That way, no need to install a 2nd battery or run a new cable to the back from your existing battery. When I’m camping, I charge the Jackery with a 100 watt solar panel.
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Old 04-01-2020, 04:10 PM #13
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Quote:
Originally Posted by Mack1611 View Post
Before my 2 battery setup I would run my Indel B at nights from a Stanley 1000/500 amp jump pack. I could run for 18 hours off that pack and plug in while driving to recharge.
Yea they had a youtuber I was watching that ran some stuff off a jackery over night then would just plug the battery pack in while driving so thats probably my next best option.
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Old 04-01-2020, 05:48 PM #14
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Quote:
Originally Posted by theCROM View Post
I might try this. I was watching some reviews for the Jackery recently and it looks to be a solid unit and I could use it for multiple things where as getting a new battery after just replacing our OEM battery would sound counter intuitive.
Yea if you just got a new battery i wouldnt bother with a new battery. If youre only running a fridge, a dual battery syatem is alot. Do a goal zero (or whatever brand) i think a better brand plus a always hot cig plug wouldnt hurt the battery, but again alpicools readings are bad.

Heres a good vidoe for the jackery even though this one is much larger than what youd need. He had a 200$ coupon though

https://www.youtube.com/watch?v=nJSJph64f9Y&feature=youtu.be

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Old 04-01-2020, 07:19 PM #15
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Yea i got the 50L for 300$. the 40L was only 260$ and I think the 30L was around 220-240$ so not a bad deal. It says its compressor based and can be used as a freezer. We just hooked it up today to a wall outlet to see if it actually cools down pretty low or not. How did you go about making your own portable and what is the cost comparison to buying a premade one like a Goal Zero or Jackery?
That's really inexpensive... I think I am going to go buy the 30L just to have a smaller option. Right now my ARB is on overflow duty holding frozen meat in the house because of current events.

My portable setup is equivalent capacity to a Goal Zero Yeti 1000 and probably cost me about $200 to make.

I cobbled it together using recycled lithium batteries and an assortment of parts I found to use useful for the setup.

Last edited by Bumbo; 04-01-2020 at 09:41 PM.
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