Why should I charge my 12v battery?

[Jeffredo]

I received 3 notifications that my remote features were disabled on my ‘24 hybrid. This is during the 4 months that I’ve owned the truck. I had some concern about the notices but everything seemed to normalize itself by just driving the truck.Today I got the notification again. My mileage is 1958 miles. I read that I’m supposed to trickle charge my battery to avoid going into “deep sleep”. I’m not happy about that.
IF NORMAL DRIVING WON’T CHARGE THE BATTERY,WHY DID’NT FORD BUILD IN ,A PLUG-IN BATTERY CHARGER ?
Why is getting an AGM Battery and rigging a charger yourself, acceptable to the members of this club?

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[Glen Baker LLC]

I received 3 notifications that my remote features were disabled on my ‘24 hybrid. This is during the 4 months that I’ve owned the truck. I had some concern about the notices but everything seemed to normalize itself by just driving the truck.Today I got the notification again. My mileage is 1958 miles. I read that I’m supposed to trickle charge my battery to avoid going into “deep sleep”. I’m not happy about that.
IF NORMAL DRIVING WON’T CHARGE THE BATTERY,WHY DID’NT FORD BUILD IN ,A PLUG-IN BATTERY CHARGER ?
Why is getting an AGM Battery and rigging a charger yourself, acceptable to the members of this club?

Exactly.
It is not acceptable to me.
From 2000-2019. I owned a 1996 Chrysler Town and Country LXI minivan. There were times I would not touch it for 6 months and it would still start never plugged it in.
I would replace the walmart battery every 2-3 years. I sold that van back to the original owner with 97,000 miles on it.
I will be damned, if I can not leave my 2023 Maverick for 2 weeks without having to worry about having a dead battery. If it happens and I have cell signal. I will call roadside assistance.
If not then I have to rely on Stanley.

 

[mav47]

My experience: simply installing an AGM battery solved my Hybrid's deep sleep issues.

No need for a charger.

The Hybrid Maverick should have had an AGM battery from the factory, just like all (similar) Toyota planetary Hybrids do. I've had multiple Hybrid Toyotas, and have had zero battery charging issues.

At this point, I think this was simply a cost cutting decision by Ford, likely not the right one in hindsight. I am sort of surprised that they haven't switched to AGMs in later Maverick model years, as there are obviously lots of reports of these issues.

Anyway, not a major deal: a new AGM was only $135 or so, and that fixed it for me.

 

[Waterick]

My experience: simply installing an AGM battery solved my Hybrid's deep sleep issues.

No need for a charger.

The Hybrid Maverick should have had an AGM battery from the factory, just like all (similar) Toyota planetary Hybrids do. I've had multiple Hybrid Toyotas, and have had zero battery charging issues.

At this point, I think this was simply a cost cutting decision by Ford, likely not the right one in hindsight. I am sort of surprised that they haven't switched to AGMs in later Maverick model years, as there are obviously lots of reports of these issues.

Anyway, not a major deal: a new AGM was only $135 or so, and that fixed it for me.

If it's been less than 11 months since you installed the AGM, don't count on your deep sleep issues being solved. I've heard of them recurring. It may work if the charging rate is raised to 95 percent from 70 percent in Forscan. Still waiting to see. This is a Ford Battery Management System problem compounded by the Telematics installed, can't compare with the Toyota - I have a Prius also.

 

[mav47]

If it's been less than 11 months since you installed the AGM, don't count on your deep sleep issues being solved. I've heard of them recurring. It may work if the charging rate is raised to 95 percent from 70 percent in Forscan. Still waiting to see. This is a Ford Battery Management System problem compounded by the Telematics installed, can't compare with the Toyota - I have a Prius also.

You may be right with your warning, and we'll see!

But the truck has been flawless since installing that Group 140R AGM.

I have fiddled a bit with the SOC target rate in ForScan, kept it at 95% for a while, and even bumped it up to 100% just to see what it would do. With either setting, right after starting the truck the voltage runs at around 14.6V, and then after 5-10min it drops down to 13V. Just for fun, I should do some running for a while at the stock 80% setting, but I think that the observed behavior will be mostly similar. I'll report back if that's not the case.

Compare that to the stock FLA battery with the system ALWAYS charging at >15.1V, irrespective of the SOC setting, and occasionally the truck still would report going to deep sleep right after parking it.

Overall, my take is that installing an AGM battery is a vast improvement in the Maverick Hybrid.

I had a 2011 Prius for 10 years (270k miles) from new which I replaced with the Maverick, and we have a 2017 Highlander Hybrid. I replaced the 12V batteries in both Toyotas, but each after many years and many miles. Both come stock with AGMs, had zero charging issues, but they also don't have a BMS chasing a target SOC value. The Highlander just charges at 14.4V continuously while the vehicle is on.

 

[Waterick]

You may be right with your warning, and we'll see!

But the truck has been flawless since installing that Group 140R AGM.

I have fiddled a bit with the SOC target rate in ForScan, kept it at 95% for a while, and even bumped it up to 100% just to see what it would do. With either setting, right after starting the truck the voltage runs at around 14.6V, and then after 5-10min it drops down to 13V. Just for fun, I should do some running for a while at the stock 80% setting, but I think that the observed behavior will be mostly similar. I'll report back if that's not the case.

Compare that to the stock FLA battery with the system ALWAYS charging at >15.1V, irrespective of the SOC setting, and occasionally the truck still would report going to deep sleep right after parking it.

Overall, my take is that installing an AGM battery is a vast improvement in the Maverick Hybrid.

I had a 2011 Prius for 10 years (270k miles) from new which I replaced with the Maverick, and we have a 2017 Highlander Hybrid. I replaced the 12V batteries in both Toyotas, but each after many years and many miles. Both come stock with AGMs, had zero charging issues, but they also don't have a BMS chasing a target SOC value. The Highlander just charges at 14.4V continuously while the vehicle is on.

Good to know that maybe the SOC does not need to be changed as long as you've got an AGM. SO far, so good with mine, but I've taken no chances. Pulled TCU fuse, no Ford Pass and keep fobs sealed away. Courtesy lights have always come on when I open the door. Maybe if I do have an issue all that will be needed is an AGM upgrade.​

 

[Rickthetech]

If it's been less than 11 months since you installed the AGM, don't count on your deep sleep issues being solved. I've heard of them recurring. It may work if the charging rate is raised to 95 percent from 70 percent in Forscan. Still waiting to see. This is a Ford Battery Management System problem compounded by the Telematics installed, can't compare with the Toyota - I have a Prius also.

How do you change the battery charge rate? does anyone have an example of how to change it Via Forscan ?
I have the same issue headed to dealership today.. I will post an update later today when I get done at dealership.

 

[Matso]

Please do Rick. I take my 24 Lariat in on Monday. I am curious to find out what if any solution they find for your issue. Thanks

 

[Oscarcat]

I received 3 notifications that my remote features were disabled on my ‘24 hybrid. This is during the 4 months that I’ve owned the truck. I had some concern about the notices but everything seemed to normalize itself by just driving the truck.Today I got the notification again. My mileage is 1958 miles. I read that I’m supposed to trickle charge my battery to avoid going into “deep sleep”. I’m not happy about that.
IF NORMAL DRIVING WON’T CHARGE THE BATTERY,WHY DID’NT FORD BUILD IN ,A PLUG-IN BATTERY CHARGER ?
Why is getting an AGM Battery and rigging a charger yourself, acceptable to the members of this club?

Agree 100%, Unacceptable. Ford should provide an AGM battery if that is the fix. That said, I have zero issues with my 2024 Lariat hybrid in 4500 miles.

Yes, the courtesy lights etc. do not come on if it sits awhile. It sat for 16 days while we were away and "started" right up, no deep sleep warning msgs, no battery tender.

We had a 2011 Prius (III trim) and had zero issues in 10 years, although it only had 65k miles. I replaced the 12v. battery once.

That said, the Mav has many more advanced electronics. And the Mav transmission feels better than what was in the 2011 Prius.

My '24 Mav gets just a few mpg under what my wife got in the 2011 Prius.

I had a 2006 BMW 530i and after a few years, new flooded battery and only 28k miles, it required a battery tender. All sorts of electrical gremlins in that car. I didn't know about AGM batteries then.

 

[MrMoustache]

Running my '24 Hybrid daily since January, and I've never seen issues like this. Came back from 8 days out of country, and no battery issues either. What am I doing right? My biggest frustration is that the battery capacity if too small, with engine braking engaging in places where I'd love to be able to store more energy.

 

[Shelbyv8]

My 2023 XL Hybrid is 15 months old has 6000+ miles on it and has had 0 issues. I have a 400 watt inverter in the bed that maintains the charge on my mobility scooter.

 

[MakinDoForNow]

I received 3 notifications that my remote features were disabled on my ‘24 hybrid. This is during the 4 months that I’ve owned the truck. I had some concern about the notices but everything seemed to normalize itself by just driving the truck.Today I got the notification again. My mileage is 1958 miles. I read that I’m supposed to trickle charge my battery to avoid going into “deep sleep”. I’m not happy about that.
IF NORMAL DRIVING WON’T CHARGE THE BATTERY,WHY DID’NT FORD BUILD IN ,A PLUG-IN BATTERY CHARGER ?
Why is getting an AGM Battery and rigging a charger yourself, acceptable to the members of this club?

The AGM as well as a noco g4 or g5 multi function maintainer are available as dealer installed items. As far as being acceptable I am happy to put factory or AGM battery on a maintainer for a week 3 or 4 times a year to double or triple my batteries life. Before I had my maverick I had a 2012 Honda CRV which would eat a battery in 28-36 months without a 4 stage maintainer on it 3 or 4 times a year. (The 4th battery when I was using my noco g5 was still going after 61 months). Also I plug my cell phone into it's charger EVERY NIGHT.

 

[HeyBales]

Running my '24 Hybrid daily since January, and I've never seen issues like this. Came back from 8 days out of country, and no battery issues either. What am I doing right? My biggest frustration is that the battery capacity if too small, with engine braking engaging in places where I'd love to be able to store more energy.

Just to confirm you went from a sentence about the Low Volt 12V battery, to a sentence about the HV battery.
Connection being the 12V allows the HV to "run", which then can charge the 12V.

 

[scotty]

My experience: simply installing an AGM battery solved my Hybrid's deep sleep issues.

No need for a charger.

The Hybrid Maverick should have had an AGM battery from the factory, just like all (similar) Toyota planetary Hybrids do. I've had multiple Hybrid Toyotas, and have had zero battery charging issues.

At this point, I think this was simply a cost cutting decision by Ford, likely not the right one in hindsight. I am sort of surprised that they haven't switched to AGMs in later Maverick model years, as there are obviously lots of reports of these issues.

Anyway, not a major deal: a new AGM was only $135 or so, and that fixed it for me.

Where did you buy your agm? Was it local or in the mail?
What was the manufacturer? Did it fit without pulling out the plastic trim.
I want to be ready if my battery goes south and i need to mail for a battery (i have only 1 car).
thanks

 

[Silver23]

You may be right with your warning, and we'll see!

But the truck has been flawless since installing that Group 140R AGM.

I have fiddled a bit with the SOC target rate in ForScan, kept it at 95% for a while, and even bumped it up to 100% just to see what it would do. With either setting, right after starting the truck the voltage runs at around 14.6V, and then after 5-10min it drops down to 13V. Just for fun, I should do some running for a while at the stock 80% setting, but I think that the observed behavior will be mostly similar. I'll report back if that's not the case.

Compare that to the stock FLA battery with the system ALWAYS charging at >15.1V, irrespective of the SOC setting, and occasionally the truck still would report going to deep sleep right after parking it.

Overall, my take is that installing an AGM battery is a vast improvement in the Maverick Hybrid.

I had a 2011 Prius for 10 years (270k miles) from new which I replaced with the Maverick, and we have a 2017 Highlander Hybrid. I replaced the 12V batteries in both Toyotas, but each after many years and many miles. Both come stock with AGMs, had zero charging issues, but they also don't have a BMS chasing a target SOC value. The Highlander just charges at 14.4V continuously while the vehicle is on.

Seeing 15.1V when running tells me the battery was bad. The truck was trying to charge it without it happening.
I had the deep sleep/dead battery problem when mine was new, it turned out to be the cheap alarm the dealer put on it as an upsell. Once disconnected no problems since. Even with the chepo battery Ford put in it from the factory.
When the time comes I will get an AGM to replace it.

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