It will still probably help if they would update the charging software to charge to more than 85%. I think the lousy batteries are most of the problem though. One week with the AGM so too soon to tell on my part.
Thát was addressed already by the previous dealership
My '24 XLT got a Ford warranty replacement lead/acid after only 10 months in service...
Yeah, that is what the replacement is even though they now have the AGM readily available. I know one guy who is on his 5th battery. Until Ford gets rid of these defective batteries the problem will continue.
There is nothing wrong with the batteries, it's the faulty BMS that is chronically undercharging them and leaving them sulfated and unable to hold a charge.
Yep, the AGM will furnish current longer because it has a higher specific gravity electrolyte with greater voltage range of operation. It would be interesting to see how much liquid has "disappeared" from the OEM "enhanced" batteries. May keep one of mine and check it out when it's replaced (if not surrendered for warranty).
I have the original battery in my hybrid Maverick that was purchased on 3/9/22. (into my 4th year) yes, my truck is in sleep mode most of the time, but always starts, and the interior light go on when I push the start button on my Lariat. As long as my truck don't snore, it can sleep as long as it wants!
Given that the BMS programming never allows the battery to even get to 80% charge and that EFL batteries have a built-in catalyst to reform water out of the outgassed hydrogen and oxygen, I would very much doubt that there is any significant liquid loss when you look. The side-effect of the BMS programming error is that the battery sulfates and will no longer hold a good charge, and that's why people keep complaining about the crummy batteries. Its not the batteries, its the BMS programming error.
The problem with reformed water is remixing to keep the specific gravity uniform within the battery and not stratified. Surely the BMS has a destratify routine. In any case I will continue to use my noco g5 every 60-90 days. I had a H 2012 CRV. 12v would last about 24-30 months in it. The last battery was on 61st month of service when I put my noco on it every 90-120 days.
In some cases it's a persistent draw that will deplete the battery within a few days. Even when sitting overnight it will pull it down significantly essentially treating it like a deep cycle battery. The deep cycles will sulfate a battery too. The low state of charge isn't noticeable at first because it doesn't take much power at all from the 12v battery to start the hybrid since it's started by the high voltage battery . All it needs from the 12v battery is enough power to wake the modules up. So by the time the degraded state of the 12v battery is noticed, it's completely gone. I admit that it doesn't replenish the battery as quickly as most charging systems. But on those that don't have a significant draw, the battery usually remains at a full charge.
If the bms monitor is reset. The battery will indeed reach well over 80% if given enough time. The problem is that they are drained deeply and have to replenish more current than designed. It can be compared to if you leave your headlights on for 15 minutes everyday after you shut your vehicle off. Even if your alternator on a conventional car replenishes it, the battery was still have a relatively short life, especially if it's a somewhat small battery anyway. If a vehicle is working right, if you shut it off at 85%, it should still be close to 85% the next morning. It shouldn't have to charge from 50% every day. If it did it would kill the battery fairly quickly
The Ford SOC % value PID of 85% is actually the reading for a fully charged new battery.
Even those reporting no Deep Sleep Mode on their old batteries - which are few and far between most posts - show low voltage on battery when measured, no where near what would be considered fully charged 12.6-.7 V on FLA. They just seem to maintain above the cutoff for DSM. (until winter!)
