12V Battery replacement with H4

[mr.Magoo]

Over time, going down to 50% or 40% before topping off will take its toll.
Going below 90% for 4 days is not a good thing for the battery.

Where do you find this information?

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[jwrezz]

OK, so it's not a backup for the truck itself, it's a backup for my data logger / dash cam.
It's placed where the OEM jack used to be and I have a separate DC/DC charger to maintain it.

So someone DOES have their battery in the rear seat!

 

[mr.Magoo]

So someone DOES have their battery in the rear seat!

Did I miss a question at some point ?

I'm not using any of the Ford Aux / 2nd battery stuff, this is just something I cobbled together on my own.

https://www.f150lightningforum.com/forum/threads/12v-battery-replacement-with-h4.35340/post-658128

 

[jwrezz]

Did I miss a question at some point ?

I'm not using any of the Ford Aux / 2nd battery stuff, this is just something I cobbled together on my own.

https://www.f150lightningforum.com/forum/threads/12v-battery-replacement-with-h4.35340/post-658128

No, my reference to the OP saying "rear seat" and my confusion thinking that they had their LVB in the rear seat of the vehicle. They were referring to the seat of the battery tray that that grabs the back of the battery before the hold-down is installed.

 

[jwrezz]

The tray in my 2024 Lariat was a bit diff. On the right rear corner 2 pieces needed to be cut. On the left it was 4 pieces.

 

[DreamBrother1]

Seems like people are having good success with the H4 AGM upgrades. Anyone put an Interstate MTX-H4 in their truck, or know if it would work?

 

[jwrezz]

Seems like people are having good success with the H4 AGM upgrades. Anyone put an Interstate MTX-H4 in their truck, or know if it would work?

It would work, 100%. Mine is not the interstate as seen by my pics, but if it's an H4, with the tray modifications, any brand will fit/work.

 

[Blochead21]

I just did this with a Walmart Everstart H4 AGM. Rockauto was 180 with shipping for an H3 AGM, and Costco didn’t stock and couldn’t order any Interstate H3 AGMs or H4 AGMs. However it’s a simple upgrade with just an oscillating tool, and for $189 at Walmart with a 4 year warranty it’s hard to beat.

 

[RLXXI]

I just did this with a Walmart Everstart H4 AGM. Rockauto was 180 with shipping for an H3 AGM, and Costco didn’t stock and couldn’t order any Interstate H3 AGMs or H4 AGMs. However it’s a simple upgrade with just an oscillating tool, and for $189 at Walmart with a 4 year warranty it’s hard to beat.

Both show the local store to get or order from on my screen.
Interstate H3
Interstate H4

You're better off sticking with the Walmart battery (Johnson Controls) same maker of Motorcraft and many others. Walmart at least you know you can find one open at just about any hour of day or night in practically every suburb and city. Comes in handy at 5am when you're off to work and your truck won't start. Don't ask me how I know

 

[Blochead21]

Both show the local store to get or order from on my screen.
Interstate H3
Interstate H4

You're better off sticking with the Walmart battery (Johnson Controls) same maker of Motorcraft and many others. Walmart at least you know you can find one open at just about any hour of day or night in practically every suburb and city. Comes in handy at 5am when you're off to work and your truck won't start. Don't ask me how I know

You have to go through Costco directly they have the link online with different stock. My local costcos didn’t stock anything lower than an H6 and wouldn’t order it for me. They told me to go through the site, but the site wouldn’t allow me to order it anyway. Which is half the reason I went with an H4 to be able to find future batteries easier.

https://www.costco.com/automotive-batteries.html

 

[RLXXI]

You have to go through Costco directly they have the link online with different stock. My local costcos didn’t stock anything lower than an H6 and wouldn’t order it for me. They told me to go through the site, but the site wouldn’t allow me to order it anyway. Which is half the reason I went with an H4 to be able to find future batteries easier.

https://www.costco.com/automotive-batteries.html

If you click the location tab on the battery website, it should populate many places to buy or order thru, mine shows 20 different stores within 10 miles of my location. But as I said previously Wallyworld hooked me up at 5am with a warranty replacement.

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