Battery charge level?

[Ruggybuggy]

So on my 2024 hybrid I'm having no issues with my 12v battery or deep sleep issues. What is the advantage of changing the state of charge from 80% to 95%? Why 95% when you could change it to any figure? Why not 100%? Why did the Ford engineers decide 80%?

Thanks

Sponsored

 

[Mr Pibb]

That is the level at which you can quickly charge up to, without creating excess oxygen and water loss. After that it technically could be charged at a slower rate.

 

[Ruggybuggy]

Bumped for answers.

 

[Packer Bill]

The reason Ford limits the charge level to 80% is to save on gas (a very small amount). I changed my charge level to 95%...I did not want to risk overcharging by setting it to 100%.

 

[Ruggybuggy]

The reason Ford limits the charge level to 80% is to save on gas (a very small amount). I changed mt charge level to 95%...I did not to risk overcharging by setting it to 100%.

Thanks for the reply. I just set my battery to 95% just before your post. I also changed the battery type from AGM to flooded. I'll keep it at those settings and monitor the voltage. I noticed that the battery was only reading 12-12.2V in the morning and thinking this may help. I haven't had any deep sleep issues but would like to prevent it.

 

[grumpyunk]

I get a sleep message when the battery charge is at about 12.48V using a Fluke DVOM meter. It takes about 9-10 days to go from fully charged (13.18V w/o surface discharge) to that level with the radio modem turned off.

 

[EONR24]

Thanks for the reply. I just set my battery to 95% just before your post. I also changed the battery type from AGM to flooded. I'll keep it at those settings and monitor the voltage. I noticed that the battery was only reading 12-12.2V in the morning and thinking this may help. I haven't had any deep sleep issues but would like to prevent it.

You should do some tests now that you changed the coding and let me know if it makes a true difference in voltage on your hybrid. I would love someone to test the state of charge setting change on an ecoboost as well. I am under the impression it works on the ecoboost but does not on the hybrid. I just posted this below in another thread.

So basically you can change State of Charge for the hybrid but testing by other forum members has shown changing this state of charge setting on the hybrid doesn't change anything at all in regard to the actual voltage the battery receives. This is likely because the hybrid has a DC / DC converter that monitors and controls voltage. The hybrid does not have an alternator so the converter acts as the hybrid maverick"s alternator.

A quality AGM battery is a big improvement over the Motorcraft Flooded batteries and no coding changes are necessary to install it, however.. You are going to need to perform a BMS reset after installing a new battery to make sure the BMS is working properly and reading your battery properly.

Other fords, such as the focus ST, have been using 80 % state of charge for well over 10 years and batteries do not prematurely wear. I really don't think it's necessary to change this setting but you can change it on the ecoboost on both flooded and AGM batteries to theoretically extend the life of the battery. AGM batteries usually handle undercharge much better than flooded batteries.

Also, The Maverick has battery codings that are set up for an AGM battery from the factory. There is a choice for AGM or flooded in the BCM coding and every single Maverick comes from the factory with this coding set to AGM. The maverick likely should have came with an AGM battery from the factory and I believe some ecoboosts DID come with an AGM from the factory.

Anyways, long story short, just replace your battery with the correct sized AGM battery and do a BMS reset. You can change the State of Charge on the ecoboosts but it isn't a necessity

 

[EONR24]

I hope this does make a positive difference in battery voltage for you. I just am not sure it will make a real world change. It seems to make a difference changing state of charge on the ecoboost but I have not tested it. The true answer is the hybrid and the ecoboost should have came with an AGM from the factory. But thats too expensive for Ford. lol

 

[Ruggybuggy]

You should do some tests now that you changed the coding and let me know if it makes a true difference in voltage on your hybrid. I would love someone to test the state of charge setting change on an ecoboost as well. I am under the impression it works on the ecoboost but does not on the hybrid. I just posted this below in another thread.

So basically you can change State of Charge for the hybrid but testing by other forum members has shown changing this state of charge setting on the hybrid doesn't change anything at all in regard to the actual voltage the battery receives. This is likely because the hybrid has a DC / DC converter that monitors and controls voltage. The hybrid does not have an alternator so the converter acts as the hybrid maverick"s alternator.

A quality AGM battery is a big improvement over the Motorcraft Flooded batteries and no coding changes are necessary to install it, however.. You are going to need to perform a BMS reset after installing a new battery to make sure the BMS is working properly and reading your battery properly.

Other fords, such as the focus ST, have been using 80 % state of charge for well over 10 years and batteries do not prematurely wear. I really don't think it's necessary to change this setting but you can change it on the ecoboost on both flooded and AGM batteries to theoretically extend the life of the battery. AGM batteries usually handle undercharge much better than flooded batteries.

Also, The Maverick has battery codings that are set up for an AGM battery from the factory. There is a choice for AGM or flooded in the BCM coding and every single Maverick comes from the factory with this coding set to AGM. The maverick likely should have came with an AGM battery from the factory and I believe some ecoboosts DID come with an AGM from the factory.

Anyways, long story short, just replace your battery with the correct sized AGM battery and do a BMS reset. You can change the State of Charge on the ecoboosts but it isn't a necessity

I did change the setting back to AGM from flooded. The charge profile of a higher voltage would be preferable. I did leave the charge level at 95%. I did do a couple of voltage checks first thing in the morning and have seen 12.2-12.4v and haven't seen under 12. I'll monitor it over the next couple of weeks.

Your right that an AGM battery would solve the issue but I'm going to keep using the flooded battery if it continues to work. My goal is to maintain a higher voltage in the flooded battery so that it last as long as possible by preventing sulfation.

 

[EONR24]

I did change the setting back to AGM from flooded. The charge profile of a higher voltage would be preferable. I did leave the charge level at 95%. I did do a couple of voltage checks first thing in the morning and have seen 12.2-12.4v and haven't seen under 12. I'll monitor it over the next couple of weeks.

Your right that an AGM battery would solve the issue but I'm going to keep using the flooded battery if it continues to work. My goal is to maintain a higher voltage in the flooded battery so that it last as long as possible by preventing sulfation.

Sounds good! and same Im trying to keep the flooded one on my ecoboost as long as possible and then when it goes bad im going AGM

 

[Johnkn]

How did you change to 90-95%


.

 

[The Real Maverick]

My stock battery is/was a piece of crap.

Charging it to 100% with grid powered charger did nothing to change the baseline resting voltage of the battery.

FWIW my hybrid applies 15.3 V to the 12 volt battery every single day. Still, the resting voltage is about 12.2 to 12.3 volts.

To paraphrase an old catch-phrase:

"It's the battery, stupid."

(Or it's the stupid battery.)

Probably best to leave the truck alone.

 

[Ruggybuggy]

My stock battery is/was a piece of crap.

Charging it to 100% with grid powered charger did nothing to change the baseline resting voltage of the battery.

FWIW my hybrid applies 15.3 V to the 12 volt battery every single day. Still, the resting voltage is about 12.2 to 12.3 volts.

To paraphrase an old catch-phrase:

"It's the battery, stupid."

(Or it's the stupid battery.)

Probably best to leave the truck alone.

Even if the battery does drop to 12.3v and it still starts the vehicle and doesn't go to deep sleep I'll continue to use the flooded untill I start to see a problem.

No doubt an AGM battery will be in my future but untill then I will keep the money in my bank.

 

[The Real Maverick]

Ford's point to me was:

"Your truck starts every day. What's the problem?"



Kinda true. The battery / charging acts weird. But to their point, it is getting the job done. But I never leave it parked longer than a weekend.

 

[Ruggybuggy]

Well after testing the battery after setting the charge level to 95% I see very little difference in the voltage level. My feeling is that the battery just does not have enough capacity and overnight it drains down. I'm sure if the vehicle wasn't a daily driver and was left for a week it would go into sleep mode. I'll run it until it dies then purchase an AGM battery.

Sponsored