12V battery replacement

[RLXXI]

Pretty flat discharge curve. I see your point now.

That's the beauty of those batteries. They have just as much power to work with at 90% as they do at 20%.

Sponsored

 

[Lytning]

I bought and installed in my Lightning an Ohmmu Li-H3-BH (LFP) 12 Volt Battery two weeks ago, based upon positive user comments on this forum. I just returned from a 25 mile errand trip. Ohmmu 12 volt SOC, easily accessible in the Ohmmu app, is at 100%.

Among several reasons for rewarding Ohmmu with my purchase, them delivering an easily accessible 12 volt battery SOC was near the top of my list ... something that @Ford Motor Company would not do in over 3 years.

Now, if Ohmmu sold BlueCruise 1.4 ...

Attached are screen copies of 12 volt data from the Ohmmu app and Car Scanner at the same time in my Lightning. Both show 100% 12 volt SOC. Ohmmu shows 14.39 volts, and Car Scanner shows 14.2 volts at the battery and 14.4 volts at the OBD port. Interestingly, both show 0 amps 12 volt battery current. Car Scanner shows 49 amps DC-DC Low Voltage. The truck was "On" with the AC running when the data screens were captured. It appears that the main battery DC-DC Low Voltage powers all 12 volt users when the truck is running, and the 12 volt battery is inactive.

 

[Maxx]

Attached are screen copies of 12 volt data from the Ohmmu app and Car Scanner at the same time in my Lightning. Both show 100% 12 volt SOC. Ohmmu shows 14.39 volts, and Car Scanner shows 14.2 volts at the battery and 14.4 volts at the OBD port. Interestingly, both show 0 amps 12 volt battery current. Car Scanner shows 49 amps DC-DC Low Voltage. The truck was "On" with the AC running when the data screens were captured. It appears that the main battery DC-DC Low Voltage powers all 12 volt users when the truck is running, and the 12 volt battery is inactive.

It looks like Truck provides the same voltage to my battery (OEM) and Yours. I get 14.35V when truck is running and 12.4V when it is off at 100% LVB SOC. It is the first time I see mine at 100%. I drove for 140 miles yesterday and charged for eight hours last night. That should do it. What I don’t know understand is that this morning around noon, when I tried to leave fan started going crazy trying to cool something. My AC was not running. Granted truck was sitting in the sun for a few hours but when I checked the battery temp, it was at 73F with ambient temp at 82.

Note; by the time I plugged in to ODB II, the fan had already stopped cooling. It was running 1-2 minutes. I doubt battery temp can drop from really hot to 73 that quickly. Does anyone know what was fan cooling?

 

[htobin]

This evening when I turned off my truck, I got the following message. Not sure what it means. I have been parked for about an hour with the car running and I’m not sure if that had anything to do with it my truck is a 2023 lariat with about 25,000 miles. Is that any indication that I might need a 12 V battery exchange? I did turn it off and on and got the same message. Everything else seems fine

 

[TaxmanHog]

Is that any indication that I might need a 12 V battery exchange? I did turn it off and on and got the same message. Everything else seems fine

Possibly, you could take it in for a battery test.

 

[Maquis]

This evening when I turned off my truck, I got the following message. Not sure what it means. I have been parked for about an hour with the car running and I’m not sure if that had anything to do with it my truck is a 2023 lariat with about 25,000 miles. Is that any indication that I might need a 12 V battery exchange? I did turn it off and on and got the same message. Everything else seems fine

Are you sure you had the truck “running?” It looks like it was in accessory mode. That’s why it’s telling you either turn it on or turn it off.

 

[htobin]

It occurred when I shut down the truck. I restarted it and shut it down again and got the same message

Sponsored