Replacing the Hybrid's OEM 12v. Battery

[CurtisB]

I asked and I did not get an AGM. They knew why I asked and said they had to put in what Ford tells them to.

Thanks. This answer the question Is Ford still telling the dealership service departments to install flooded batteries. Or at least in your case it appears this is true.

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[Glen Baker LLC]

We’ll see how long this battery lasts. I’m a cheapskate. I won’t pay unless it’s out of warranty.

While I agree with in spirit.
I think most members decided their time and aggravation was worth more than another Ford battery.

 

[ronlennon]

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 did this about 3 weeks ago. Got AGM battery from Amazon, perfect fit and no more notices about battery saving mode. At one time, I had a 97 Miata I bought used with an AGM battery. I drove it for around 7 years and sold it with same battery still working fine.

 

[Dad]

We’ll see how long this battery lasts. I’m a cheapskate. I won’t pay unless it’s out of warranty.

I think "good money management" a better phrase than "cheapskate". Best of luck with it.

 

[Dad]

I did this about 3 weeks ago. Got AGM battery from Amazon, perfect fit and no more notices about battery saving mode. At one time, I had a 97 Miata I bought used with an AGM battery. I drove it for around 7 years and sold it with same battery still working fine.

That's amazing about the Miata! Yeah, I haven't been getting any battery saving notices either. One of the tips I got here was to top off the new battery with a battery maintainer and THEN do the BMS. Glad to hear all went well.

 

[Dad]

I put mine in today.
First thing that I noticed was the AGM one I bought was noticeably heavier.
I think more weight is a good thing for car batteries.
I followed OP first post. It was easy to do.
I did the battery reset of 5x flash lights 3 x hit brake and saw the battery symbol flash. I think I'll be all set now.

A member posted that it would be a good idea to top off the battery with a maintainer before resetting the BMS. That way, the computer has the best voltage readings.

 

[GreyCacti]

A member posted that it would be a good idea to top off the battery with a maintainer before resetting the BMS. That way, the computer has the best voltage readings.

I put it on a noco genius 2 amp till full before installing. I could also put the genius 2 under hood to the terminals if I have to charge it for the truck to see the voltage?

 

[Ozarkbeard]

I put it on a noco genius 2 amp till full before installing. I could also put the genius 2 under hood to the terminals if I have to charge it for the truck to see the voltage?

That's where I always connect my NOCO. Also installed a quick connect charger cord under the hood, to use instead of the alligator clips.

 

[MakinDoForNow]

That's where I always connect my NOCO. Also installed a quick connect charger cord under the hood, to use instead of the alligator clips.

The noco with the clips are bolted on and can be removed and use the ring terminals to bolt to vehicle.

 

[Dad]

Thanks for the posting this info.

$111.99 is the BEST price you will find for a Maverick Hybrid AGM Battery that fits perfect.

True enough. Thanks for pointing that out.

 

[Dad]

That's where I always connect my NOCO. Also installed a quick connect charger cord under the hood, to use instead of the alligator clips.

Though I already have a good battery maintainer, I purchased the NOCO that installs under the hood based on the advice of our members on this thread. Have yet to install, but feel I made the first step towards ensuring the battery stays at its peak performance as long as possible.

 

[Dad]

The noco with the clips are bolted on and can be removed and use the ring terminals to bolt to vehicle.

Good to know. Anyone know the size of the nut on the negative body bolt?

 

[HeyBales]

I have been driving in 'Sport' mode lately, and it's still in deep sleep mode. Guess I need a visit to the dealer.

Couple of posts in actual battery issue threads that point out why that doesn't matter on hybrid, if point was to have engine running more.

 

[Dad]

I put it on a noco genius 2 amp till full before installing. I could also put the genius 2 under hood to the terminals if I have to charge it for the truck to see the voltage?

Sorry for my ignorance. Are you asking a question? If so, I didn’t understand. Please ask again.

 

[HeyBales]

I put it on a noco genius 2 amp till full before installing. I could also put the genius 2 under hood to the terminals if I have to charge it for the truck to see the voltage?

You sure can install it in there.

https://www.mavericktruckclub.com/forum/threads/battery-maintainer-where-did-you-put-the-plug.57600/

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