Battery Drain issue

[HeyBales]

Pointless since they are working on a fix. No one will throw a more expensive AGM until clear instructions come out.

My bet is that whatever fix they come out will solve battery issues for 97% of people.

I'm betting the issue and fix as stated in the SSM will help the 3% of people with overall battery issues.
I hope I'm wrong.

But dealership is going to pass the buck as long as they can.

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[uga]

So the BXT-99RT4-A battery isn't AGM because the dealer told me it was?

Take a pic and post it here just to be sure. Unfortunately, not sure you can trust anything a Ford dealer says anymore...................................................

 

[Matso]

That's their stance and it's not likely to change.

 

[NedF]

The dealer may have paid for it themselves.... or put in a different battery than they claimed to Ford.
Or a Ford Field Service Engineer may have given permission for a different battery?? That might be a possibility? They will at times overrule normal warranty policy.

Ford is very picky about battery warranty claims. Every single one of them is manually reviewed. I can't see how Ford would pay for any battery other than BXT-99RT4-A in a hybrid Maverick unless special permission was received.

If I recall correctly there was a shortage of the stock batteries for a while and Ford had allowed the dealers to make substitutions.

 

[uga]

NO 2022 - 2024 Maverick Hybrid has ever come from the factory with an AGM battery even though the module is programmed for an AGM battery. Thank you FORScan !

Since 2025 Hybrid models now come with an AGM battery perhaps Ford has seen the light.

 

[KevCuRaoi]

So the BXT-99RT4-A battery isn't AGM because the dealer told me it was?

Correct, BXT-99RT4-A is the lead acid battery that the workshop manual calls for for 22-24 Maverick hybrids. BXTs are always conventional flooded lead-acid batteries.

The Ford part numbers for AGM batteries always(/usually?) start with BAGM.
The AGM battery in the 25 Maverick hybrid is # BAGM-H4.

 

[Ozarkbeard]

I requested an AGM replacement on several occasions. There aren't budging.

Depends on the stealership and circumstances. Several have posted on MTC they have received AGM replacement batteries.

 

[KevCuRaoi]

I requested an AGM replacement on several occasions. There aren't budging.

The dealership only gets paid by Ford if they follow Ford's policies.

 

[NedF]

I updated my tracking today and took a look at my 12V batteries average voltage since installing the voltage monitor.

I am not liking the trend...

I hope the fix comes sooner than later. I would rather get it fixed under warranty if possible.

(This is the batteries average voltage excluding any charging over 13.5+ volts.)

 

[Matso]

Looks to me like you're in great shape. My voltage ends up at 11.6 or lower every day.

 

[23grayXLT84]

I'm betting the issue and fix as stated in the SSM will help the 3% of people with overall battery issues.
I hope I'm wrong.

But dealership is going to pass the buck as long as they can.

Nah, that SSM is temporary and it clearly states that they are working on a software fix.

Big question will be under what circumstances will you get new software. If battery tests fine, it's a mute point (as we all know it's a BS test) and dealer will send you on your way.

 

[Dluep1]

May be pointless, but those of us who have AGM batteries haven't suffered a dead battery. Also, the Maverick Hybrid in forscan is formulated for an AGM battery. All I am trying to see is if the dealership service departments are at least in the know about this. That's all. Putting in a flooded battery is a temporary fix. Most of us (including me) have installed our own AGM batteries and have not had a "dead" battery.

I still get the occasional "sleep" message, but its been since May of 2024 that I put in my AGM battery and it removes the "sleep" issue just driving 3 miles. And, after a sleep message and driving only 3 or 5 miles, it's weeks before I see another one. My original flooded battery gave me a sleep message within 4 weeks after I got the truck new and died the next morning. I got a flooded battery installed and it died within 8 weeks.

My AGM battery is still going strong since May 2024.

I wish mine did, MY AGM went into deep sleep mode in about two weeks after I put it in. did the BMS reset and went on a 200 mile trip. . then it sat in front of my house and still drained. The dealer did a parasitic drain test and said it was in specs. so Cmon FORD. going to try a solar trickle charger to keep it alive. grrr.

 

[GeorgiaBulldog]

Just found this thread and wanted to add my experience in my '24 Hybrid thus far. Got deep sleep/battery saver notification for the first time in mid December. Drove a decent amount, including a trip to the airport to leave for a few days for Christmas. Got another notification the day before I got back, but truck still started without issue on 12/27. Drove it the 75 miles home from the airport plus another 60 or so miles that day. Still ended up getting the battery saver notification, and by 12/30 the truck wouldn't start at all.

Had truck towed to dealership, diagnosed as a battery failure due to sulfation. Replaced under warranty with another BXT-99RT4-A, BMS reset, and got truck back on 1/2. Woke up to the same battery saver notification with the new battery, and truck won't start again on 1/3. Back to the drawing board...

 

[HeyBales]

Just found this thread and wanted to add my experience in my '24 Hybrid thus far. Got deep sleep/battery saver notification for the first time in mid December. Drove a decent amount, including a trip to the airport to leave for a few days for Christmas. Got another notification the day before I got back, but truck still started without issue on 12/27. Drove it the 75 miles home from the airport plus another 60 or so miles that day. Still ended up getting the battery saver notification, and by 12/30 the truck wouldn't start at all.

Had truck towed to dealership, diagnosed as a battery failure due to sulfation. Replaced under warranty with another BXT-99RT4-A, BMS reset, and got truck back on 1/2. Woke up to the same battery saver notification with the new battery, and truck won't start again on 1/3. Back to the drawing board...

Yikes.
Well, except for that 12/30 day - the battery saver and deep sleep routines worked to allow truck to start.

Would be hard to believe you got a bad battery as next one off their shelf - but that is possible.
Not like any of them are really great anyway.
Might take a peak at Negative battery terminal - mfg date is stamped there.
Week
Year

 

[NedF]

Looks to me like you're in great shape. My voltage ends up at 11.6 or lower every day.

Well I set up the pivot to show the worst voltages at starting of the truck...

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