12V Battery - Something has to be done!

[DeltaDelta]

How will you know the state of charge if you don’t use a separate battery charger?

Would a voltmeter work?

Also, I could charge for 24 plus hours.

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[4wheeldog]

Would a voltmeter work?

Also, I could charge for 24 plus hours.

Neither you nor I know what the car’s charging strategy is. And a volt meter only gives voltage not state of charge.
That said, it will work without charging the battery separately. It just isn’t as effective.

 

[Snakebitten]

Yes you get those two FordPass messages when the automatic 12V recharge is triggered because of a high drain.

The 12V battery is big enough, just not managed the best sometimes. Teslas only have 7 amp hour batteries now vs. our 35.

It's so strange that a H3 could be so dead, and without warning (FordPass notification) that a DC/DC converter charging event wouldn't make it possible to access the doors.

Or put another way, it would take almost a "perfect storm" to create the conditions necessary for not being able to access the doors and/or open the Frunk from the emergency leads in the front bumper. How can conditions be where neither option is functional?

 

[Maquis]

A week ago, I got a battery from the dealership, put it in myself, and reset the BMS.

I assumed it was fully charge.

Are they not fully charged when you get them?

Mine was not. I put it on my Noco 10 before I installed it and it took about two hours before it indicated it was fully charged.

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