2021 7.3l Tremor: Do I need 2 batteries?

Alabamacoastie

Tremor Fanatic
Joined
Jan 22, 2021
Messages
101
Reaction Points
327
Location
Pittsboro, North Carolina
Military
Ex Coast Guard
Current Ride
2021 F250 Tremor 7.3l
Current Ride #2
2020 Yamaha Kodiak 700cc
First Responder
Ex Combat Medic
Hi guys (and gals if you are reading)!

Two weeks ago, I bought a new 2021 7.3l XLT Tremor. I didn't order it. I didn't even know what Tremor was... I just wanted a new F250, and when I saw the Tremor package, I fell in love (I was gonna buy a F250, lift it, and put mud tires on it, so Tremor package was amazing). I searched local dealers until I found a Tremor in my price range, I drove 2 hours each way, and I bought it.

I love everything about the truck. It's fantastic in every way, in my opinion.

Today, I was watching an offroad video on YouTube and the guy said, "Every F250 Tremor comes with 2 batteries. "

I thought, "That's awesome. I didn't know I needed two batteries, but cool. I've got two batteries!"

Well, I just walked outside, and checked... My Tremor only has one battery.

Now, I'm wondering... Should I pay to get another battery installed?

I do not intend to run a winch, plow, additional lights, etc... I probably won't make many upgrades to my truck.

Do I want (need) a second battery? Thanks guys and gals!
 
No, you don't need a second battery. Given your intended usage, installing a second battery is analogous to lighting the money on fire. In fact, lighting a thousand dollars of singles on fire would definitely be more fun, and you could have a party doing it.
 
What? You only have one battery!?!? That’s embarrassing. Everyone knows you need 2 to look even remotely badass pulling up to the grocery store. I just don’t think you deserve to be a part of this forum anymore. It’s been nice knowing you and I wish you good luck Mr. One Battery Man.
 
Like stated above. If you’re going to have extra lights, winch or additional sub amps it would help. With the subzero weather I’ve noticed that my dash cam running in parking mode continuously drains the battery when it’s cold outside as well. But my battery is still the stock one about a year and a half old and Toyota stock batteries suck.
 
Is the second battery standard on the diesel?
Yes, all Diesels come with 2 Batteries as Standard equipment. It needs double the Cranking Amps to turn over the engine.
My 1999 F250 Powerstroke came with 2 batteries also, so this is nothing new.
With the extra weight of the heavy Crankshaft, and the Heavy pistons, and the much higher compression ratio it takes every bit of at least 1300 CCA JUST to spin that motor. ?
 
Is the second battery standard on the diesel?
I don't know about Ford. It is on Ram.
There's so much weight to spin and compression to overcome. Especially when cold.

Oops. Just read the above post. What he said.
 
Hi guys (and gals if you are reading)!

Two weeks ago, I bought a new 2021 7.3l XLT Tremor. I didn't order it. I didn't even know what Tremor was... I just wanted a new F250, and when I saw the Tremor package, I fell in love (I was gonna buy a F250, lift it, and put mud tires on it, so Tremor package was amazing). I searched local dealers until I found a Tremor in my price range, I drove 2 hours each way, and I bought it.

I love everything about the truck. It's fantastic in every way, in my opinion.

Today, I was watching an offroad video on YouTube and the guy said, "Every F250 Tremor comes with 2 batteries. "

I thought, "That's awesome. I didn't know I needed two batteries, but cool. I've got two batteries!"

Well, I just walked outside, and checked... My Tremor only has one battery.

Now, I'm wondering... Should I pay to get another battery installed?

I do not intend to run a winch, plow, additional lights, etc... I probably won't make many upgrades to my truck.

Do I want (need) a second battery? Thanks guys and gals!
Dual batteries is optional on the 7.3L gas engine. My Tremor has one battery. I also did not plan on buying a Tremor but I decided to once I saw it and test drove it. Good Luck!
 
Is the second battery standard on the diesel?
Yes, the diesel needs extra capacity since running glow plugs on top of higher compression to overcome with the starter.

As others have stated extra battery is not nessicary on the gas if not running enough aux lights to light a small city or heavy motor loads like a winch / hydraulic pump.
 
Dumb question, but how does a dead battery work? Presumably one dies and the other is not sufficient to turn over the engine? So instead of providing redundancy the extra battery makes you more likely to get stuck? When jumping, how do you know which battery needs charging?
 
Dumb question, but how does a dead battery work? Presumably one dies and the other is not sufficient to turn over the engine? So instead of providing redundancy the extra battery makes you more likely to get stuck? When jumping, how do you know which battery needs charging?
You have to disconnect both of them, and if you have a voltmeter check the voltage on each one first. If this is inconclusive then they need to be load tested individually. That can usually be done at your local Auto Parts store. They have the test sets that do this.
Or you can buy one yourself on Amazon. They can run anywhere between $40-$100 depending on what kind.
 
Also good to know that when you have one battery that's going bad and has low voltage, it'll draw off the good battery and lower it as well (they'll both equalize to lowest common voltage). So the above post is correct. Go have them load tested. You may only have to replace one. In case you know which is the bad one, disconnect it until you can replace it. Usually, however, it's best to replace both at same time. For the reason I stated above.
 
My 7.3 King Ranch came with 2 batteries. I guessed it was to run the power outlets and any extra lights or winch if I put them on.
 
My 7.3 King Ranch came with 2 batteries. I guessed it was to run the power outlets and any extra lights or winch if I put them on.
It’s also handy for those who want to put a truck camper on their truck too!
Many of those type of campers will ”charge” off of the truck, so it’s good to have that extra capacity.
 
I bought my truck off the lot and that was the one option I wish it had. I haven't seriously looked into what it would cost to add if after but it was a pretty cheap option on the order sheet. Couldn't believe mine didn't have it as it was someone else's order and he almost ordered everything... such as floor mats, the Ford gooseneck ball etc.
 
It’s also handy for those who want to put a truck camper on their truck too!
Many of those type of campers will ”charge” off of the truck, so it’s good to have that extra capacity.
I would use cation with that. Yes you do have to get dual batteries to get the dual alternators in the gas but unless you are running a heavy gauge wire additional charge circuit directly from the batteries to your camper batteries/converter won’t be able to take advantage of extra alternator output. Also if doing that I recommend some type of ACR(automatic charge relay) or other type of disconnect to ensure camper load doesn’t draw down the truck batteries as well. Regardless of alternator options the charge circuit in the camper plug is limited to 30A so if using that there is really no advantage to the bigger alternator or extra battery for camper battery charging.
 
Back
Top