Replacing the Hybrid's OEM 12v. Battery

[MMDavis]

I've seen many a thread about how the hybrid's 12v battery is woefully inadequate and after 34 months my OEM battery finally got the point where it wouldn't start the truck. Thanks to several members here, specifically @Glen Baker LLC, I found a AGM replacement battery from Amazon and installed it today. Very satisfied with the install. The battery fit perfectly without any type of modification to the tray. Took a bit of doing to remove the original . . . mostly just figuring out where the holding clamp was located and navigating the thing out of it's bed.
I tried YouTube for a how-to and wow, was that disappointing. The one I found consisted of jerky and fast camera movements, almost no instructional context, and the capper was after finally getting it out, the installers realized the replacement was too big! Good grief! Why they published that is beyond me.

Anyway, this will serve not so much as a how-to replace the battery, but more of what you should have on hand before you begin.
Naturally, you'll need the battery.
I got mine from Amazon. Great price, 3 year warranty and 570 CCA The best feature of this battery is that it is an exact duplicate of the OEM and so it fit perfectly. No tabs to bend or cut. No plastic to trim.
https://www.amazon.com/dp/B0CM3KNG1H?ref=ppx_yo2ov_dt_b_fed_asin_title

You'll also need the following:

• 10mm socket (this will fit the nut holding the cable clamps on the terminals)
• 1/4 drive with at least an 8" extension to get to the holding clamp on the passenger side of the battery. I recommend using a 10mm socket with a built-in magnetic holder so you can better align and hold the bolt when you try to put back in. Tough to get your fingers down in that narrow slot.
• Telescoping magnetic pick up tool. Absolutely necessary for removing the holding clamp and replacing it.
• Long blade screwdriver. You'll need to adjust the holding clamp over it's securing hole once you get it dropped in there and it will also serve to hold it down so you can retract the magnet pick-up tool.
• You'll need something to keep the negative cable away from the battery bay otherwise it just gets in the way as you try to remove one battery and put in the new one. I zip tied mine to a small dumbbell.

Remember to reconnect the vent tubing and reset your BMS after install.

One last note: Amazon will give you a message that this battery will not fit your Maverick. Ignore that. It pops up because the Maverick hybrid's stock battery is not an AGM type. It fits perfectly.

*UPDATE* Battery has been in for a week with no negative issues. One minor, but welcomed result is that the dome courtesy lights come on when I enter the truck at night. Before the new battery, they did not light up which was inconvenient and frankly a bit irritating towards Ford for lousy quality.

Also: when I installed AGM replacement battery in my 2024 XLT the Ford tech reset the battery type to AGM. (See pic)

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[Dad]

Also: when I installed AGM replacement battery in my 2024 XLT the Ford tech reset the battery type to AGM. (See pic)

Great reminder!

 

[HeyBales]

Also: when I installed AGM replacement battery in my 2024 XLT the Ford tech reset the battery type to AGM. (See pic)

I'd suggest if they thought that one mattered to the BMS - then the others should too, even more so.
So they all should have info entered.
CA, CCA, Ah Size, Design, they got Type, Manufacturer doesn't matter.

I don't think they are used fields on the pre-25MY hybrids.

 

[opentext]

I ordered the battery and hope it does drop right in, as this old vet is not up on things as much as you young ones are.

 

[MakinDoForNow]

I ordered the battery and hope it does drop right in, as this old vet is not up on things as much as you young ones are.

I am 83 year old disabled Veteran and my replacement procedure is to call my Ford dealer and have remote tech bring one out and replace it.

 

[opentext]

Have to get an oil change as well, and will take it in tomorrow, and thanks for your service as well brother.

 

[MakinDoForNow]

Have to get an oil change as well, and will take it in tomorrow, and thanks for your service as well brother.

Oh yes, I need oil change as well plus slow leak for discount Tire with rotation this week.
Thanks for your service as well!!!

 

[MaverickDragon]

The standard AGM battery is a plus for the MY25., although it's a 540 CCA..

 

[rk06382]

The standard AGM battery is a plus for the MY25., although it's a 540 CCA..

Hybrid does not use the AGM battery to crank the engine. (Cold Cranking Amps) It uses the traction battery to start the ICE.

 

[MaverickDragon]

Hybrid does not use the AGM battery to crank the engine. (Cold Cranking Amps) It uses the traction battery to start the ICE.

I didn't say it did, and am aware of that. Maybe there are some folks who were not aware of that.

A prior post noted a battery that fit the hybrid with a 570 CCA rating, and an automotive battery's standard designation is in CCA whether it's used for starting or not, because most of them are.

Regardless, It's still indicative of capacity, albeit for the Mav, a kwh designation would be more in line with how it's actually used.

 

[Dad]

I ordered the battery and hope it does drop right in, as this old vet is not up on things as much as you young ones are.

If it's an H4, it will fit without any modification.

 

[Pope]

I have a 2022 Maverick XLT Hybrid and I had to have my battery replaced already and now my second battery is dying (keeps going into sleep mode again). The dealer said they will replace the battery and reset the battery management system for $425.

After reading this thread, I've decided I'm going to replace it myself with the battery mentioned in the original post. Thanks everyone for your help!!

 

[PeteSJCA]

I have a 2022 Maverick XLT Hybrid and I had to have my battery replaced already and now my second battery is dying (keeps going into sleep mode again). The dealer said they will replace the battery and reset the battery management system for $425.

After reading this thread, I've decided I'm going to replace it myself with the battery mentioned in the original post. Thanks everyone for your help!!

I had my 2022 Maverick Lariat Hybrid 12v battery replaced on Tuesday with a Ford AGM battery, that I assume is the same one used in the 2025 Maverick Hybrid. I had it done at Sunnyvale Ford in northern California. I paid $229 for the battery and $80 for installation and programing. Total was $333. No more daily "battery saver mode" messages. Fingers crossed.

 

[Mikes22Mav]

I had my 2022 Maverick Lariat Hybrid 12v battery replaced on Tuesday with a Ford AGM battery, that I assume is the same one used in the 2025 Maverick Hybrid. I had it done at Sunnyvale Ford in northern California. I paid $229 for the battery and $80 for installation and programing. Total was $333. No more daily "battery saver mode" messages. Fingers crossed.

When you say Installation and Programming, was that just the BMS Reset or did they actually change settings in Programming? Does anyone know exactly where to go in Forescan and what to change when an AGM Battery is installed, or just leave it alone?

 

[PeteSJCA]

When you say Installation and Programming, was that just the BMS Reset or did they actually change settings in Programming? Does anyone know exactly where to go in Forescan and what to change when an AGM Battery is installed, or just leave it alone?

Sorry, they were kind of vague about what they were going to do... and I didn't ask.

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