Replacing the Hybrid's OEM 12v. Battery

[rk06382]

I believe it's the same size as previous years; Size H4. I don't think Ford changed the battery size for the 2025 hybrids.

My 2025 Ford Maverick Lariat Hybrid AGM Battery.

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[Dad]

My 2025 Ford Maverick Lariat Hybrid AGM Battery.

Thanks for verifying the 2025 size. Ford finally realized swapping out the previous wet cell battery for the AGM would save them a ton of headaches and complaints.

 

[CurtisB]

Update:

Installed Duralast Platinum AGM BCI Group Size 47
680 CCA H5-AGM Battery on 5/11/2024

No dead battery since then.

Occasional sleep messages (Sometimes twice a month, sometimes once every 2 months). I only have to drive 5 minutes and it charges the battery back up (eliminating the sleep prompt).

 

[Matso]

I am happy for those where Installing an AGM battery resolves their issue, but it doesn't work for everyone. I am proof of that. And along with the ACCM update as well, battery saver mode is a daily occurrence.

 

[HeyBales]

Interesting the 2025 manual is very clear about the battery.
(the battery swap page is another good example of sloppy copy/paste for the hybrid - says truck will loose transmission shift adaptive strategy - uh, wrong model!)

But they are clear some BMS config could be in order depending on replacement battery.
Which is new.

MOTORCRAFT PARTS - 2.5L, HYBRID ELECTRIC VEHICLE (HEV)

Component	Motorcraft Part Number
Battery. 1​	See note below. 2

1 Configure your vehicle’s battery management system to match the replacement battery. Failure to use an appropriate configuration for your battery management system could result in shortened battery life, features not working correctly, or your vehicle not starting. Consult your local dealer or service provider for further details.
2 See your dealer for the most current part number.


I'm wondering if all the PIDs with battery info are actually used now in the 25MY, or at least some of them.
Compared to 24MY where it seemed not really used, as independent corrections didn't really seem to change any effects.
(I'm aware many posters made multiple changes at once - that's bad experimental data)

 

[rknrbt]

Thanks for verifying the 2025 size. Ford finally realized swapping out the previous wet cell battery for the AGM would save them a ton of headaches and complaints.

I am sure that will help but it remains to be seen if it totally solves the issue.

 

[Dad]

I am sure that will help but it remains to be seen if it totally solves the issue.

I've had absolutely no issues since the AGM battery swap and I would go so far as to say that most members who did the same would agree.

 

[maverick4natic]

Absolutely no issues since install. No need to update BCM. No "deep sleep" issues. Interior lights come on as needed. Touch door lock/unlock work flawlessly. The best upgrade I've done.

Thank you so much!

 

[Dad]

Thank you so much!

Happy to help!

 

[Matso]

I'm glad you said "most" and not all because the AGM swap did nothing to solve my issue, so buyer beware. In fact, nobody should be paying for an AGM. If the 12v battery is a suspect regarding your particular problem, then demand the dealer shoulder that burden if you're still under warranty.

 

[JimInWI]

I'm glad you said "most" and not all because the AGM swap did nothing to solve my issue, so buyer beware. In fact, nobody should be paying for an AGM. If the 12v battery is a suspect regarding your particular problem, then demand the dealer shoulder that burden if you're still under warranty.

I agree, however it can cost much more in time, gas, and effort to get the dealer to finally act. For me, the 130 bucks and half hour to install the AGM, which worked for me, was a far better use of my time and money than repeated time consuming trips to the dealership, and perhaps being without the truck for days.

We’ve all got to decide if it’s worth our time and effort to prove a point, or to have more time enjoying our Mavericks. To each, their own.

 

[Dad]

I'm glad you said "most" and not all because the AGM swap did nothing to solve my issue, so buyer beware. In fact, nobody should be paying for an AGM. If the 12v battery is a suspect regarding your particular problem, then demand the dealer shoulder that burden if you're still under warranty.

While I agree with you in principle, it can be a burden on your time and patience to get a dealer to agree to do this within a reasonable time. Choose your battles as they say and so it's worth considering buying the battery and do it yourself install. Not at all difficult.

 

[bighap]

While I agree with you in principle, it can be a burden on your time and patience to get a dealer to agree to do this within a reasonable time. Choose your battles as they say and so it's worth considering buying the battery and do it yourself install. Not at all difficult.

This. I wasn't going to be hassled with dealing with a dealership, being without my truck, getting rides, etc. I bit the $130 bullet and it has been bliss ever since.

 

[Mavreezy]

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.

I just finished replacing the 12v battery with the one you recommended.

I got tired of the infamous, "Remote features disabled to ..." message popping up on my cell phone every single day.

I will post updates if it resolved my issues or if the gremlins continue.

But anyways, thanks for the link to the battery. It is reasonably priced compared to everywhere else.

 

[4sambos]

I just finished replacing the 12v battery with the one you recommended.

I got tired of the infamous, "Remote features disabled to ..." message popping up on my cell phone every single day.

I will post updates if it resolved my issues or if the gremlins continue.

But anyways, thanks for the link to the battery. It is reasonably priced compared to everywhere else.

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