12V Battery Status Indicator

[zvez]

sikkun posted the 12v battery FAQ link by Mach - Lee. If you read nothing else in the thread the first original post is a huge must read.

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[Snakebitten]

What is the app you are using for the Bluetooth voltometer?

It's a small ~$25 digital voltmeter that is installed permanently on the battery in the car/boat/truck/security gate........
Amazon sells it under multiple listings.

This is where it sits in the Mach-E

The range is plenty far that you do not have to approach or wake the vehicle in order to get a good clean accurate sitting voltage reading. Of course with the logging, even if you were to get a reading while the vehicle is running or awake, the app syncs with the logs and you can view the voltage historically, when the vehicle was asleep.

 

[florence]

Is voltage still an accurate reflection of battery health? I use a plug in device which shows 14.4. I verified it with a meter.

 

[J&S K]

My MME is also a 2021 and worried about the battery. Especially since live in the Phoenix, area and heat tends to kill batteries faster than normal. . What a deal for the OBD device, $12 on Amaz..

What's the App you recommend, for Android? Also is the port is tied up with another OBD device, Anyone know is there a way to plug two OBD devices into the MME. I have an OBD device from Allstate insurance OBD device plugged 24x7 for better insurance rates.

 

[nlions]

I don't get the 12v status?

 

[Flyboy]

From my post Dec 2023:
https://www.macheforum.com/site/thr...d-by-another-process.32539/page-3#post-733332

I have read many posts about the LVB and its SOC, which made me do something to easily monitor the battery. I attached an inexpensive digital voltmeter to an unused / switched fuse in the Body Control Module Fuse Box (under the glove box). Either fuse #1 or #2 should work (see Photos below). By choosing one of these locations, the voltmeter will not draw down the battery and will only fucntion when the car is running or on Accy mode. I couldn't find a good mounting spot for the voltmeter where it would be horizontal, so made do with a vertical mount.
Note there are 3 distinct readings to indicate 3 charging states:
12.7 - 12.9 V - fully charged and no significant 12 v drains
13.3 - 13.5 V - Trickle charging
14.2 - 14.8 V - Charging and usually with a significant draw, like fan/AC or headlights.

A fully charged 12 volt battery should read 12.9 V. If you are seeing readings below 12.3 V - your battery isn't being charged or there is at least one dead cell (or both).

The last picture is the voltmeter, with it on Assy mode and just the radio on (maybe headlights).

The voltmeter is here on Amazon (2 for $12):
https://www.amazon.com/gp/product/B091FM68Y6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

and here are the fuse-taps I used, also from Amazon ($12 for a variety pack):
https://www.amazon.com/gp/product/B08QJHXRN6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[Earlofsandwich]

You could also try/use the Ford Status Widget that one of the guys on this forum developed .

It shows 12V battery state

this is android right? I dont know if there is an iphone version wish there was

 

[generaltso]

Is voltage still an accurate reflection of battery health? I use a plug in device which shows 14.4. I verified it with a meter.

Yes, but not the way you’re measuring it. That’s just showing you the voltage while it’s charging.

 

[RickMachE]

Mine is only showing 67%
When to replace?

When, with the battery properly charged, you have a LOAD TEST run (many auto parts stores will run it for free), and it fails.

 

[AngryMan]

this is android right? I dont know if there is an iphone version wish there was

YES Android version

 

[zvez]

I don't get the 12v status?

You're looking at the wrong page, on ford.com you'll log in then go back up to right upper corner, click on person icon, then ".......account" in my case it's "chris account" that will open up the display and you will see it. You actually clicked on "vehicle dashboard" for the above screen

 

[nlions]

Got it, thanks. It would make too much sense to have those both on the same page.

[/QUOTE]

 

[FordFamily]

Ford.com Then sign in>account>(yourname)account. The charge level is actually your 12v charge level.

Sorry, when I sign in to my Ford account the icon I see labeled Charge Level shows 181 miles. Same as in the iPhone Ford app. No sign of 12v battery status. Any other pathways, without having to do the full monitoring apps?

 

[Gil McC]

You could also try/use the Ford Status Widget that one of the guys on this forum developed .

It shows 12V battery state

How do I get the app?

 

[dawger007]

What is the app you are using for the Bluetooth voltometer?

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