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Pretty sure that 50% SOC is not the version based on mere resting V you can find in tables, but rather their BECM SOC which is based on a few other values in a formula.
And leaves much to be desired for accuracy I'd wager.
Also not always dead, could be sitting for too long - starting could be a problem so start cutting out battery draws then.
Interesting 9.5 V must be enough to send out 1 last message from from truck modem it's going to deep sleep.
Would be interesting to see what is hit 1st - 14 days no driving, or dropping to those battery levels after constant communication. Surprised it could hit 14 days actually. Perhaps in great ATT cell coverage.
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Awesome…Tell that FORD, they wrote the service bulletin.
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Nowhere in the service bulletin does it say that the battery should operate at 9.5 V.
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Thank you for getting back to us! Can you please send over this info as a private message? I will be able to assist you as soon as you reach out to us privately. To send a private message, you can click our name and select 'send direct message'.
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The only time mine goes into power save mode is when I have had the radio on in my ACC mode waiting on my wife.
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Mine is a daily driver, so it’s not low use and I still swapped it to an AGM because of this issue. For most of us typically starts six months after ownership.
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It might be that you are not charging it around the Black "block" BMS battery sensor on the negative battery cable, so the Maverick is not sensing your charge. Connect the negative cable of the charger to where the negative cable attaches to body ground. Or it could be that you app is just taking time to update to the latest battery level, or your phone is reacting to an old notification.
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Did this inhibit your ability to drive the vehicle like you normally would or are you just concerned because you got a message in FP?
Not Exactly..........
While EFBs are an improvement over traditional flooded auto batteries, AGM batteries outperform enhanced flooded batteries. For starters, AGM batteries provide more electrical energy than an EFB can and recharge up to five times faster. An AGM battery will also typically last two to three times longer than a flooded battery, with an average lifespan of five to eight years. Plus, they're much better at standing up to the negative impact of vibrations and extreme weather. On the downside, an AGM battery will cost you more upfront than an EFB, however, since they last longer, an AGM battery will probably end up saving you money in the long run. In addition, AGM batteries have much longer warranties.
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Nowhere in the bulletin does it say anything other than battery saver parameters at 9.5v which was the whole point. I didn't write the F’ing thing FORD did, wtf is your beef with me?
Last edited:
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I never had an issue with driving but was concerned and annoyed with the messages that are now seemingly inaccurate based on my voltage tests after the message is received. I use FordPass for other things so have no plan to delete it and now I just ignore the messages and occasionally hook it up to a NOCO. If I ever have a starting issue I will just replace the battery with an AGM.
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