Sponsored

12V battery replacement

RLXXI

Well-known member
Joined
Jun 10, 2021
Threads
17
Messages
539
Reaction score
410
Location
S. E. Louisiana
Vehicles
2025 F 150 Flash, 2013 F 150 XLT, 2014 Escape, 2011 Suzuki DR 650SE
Occupation
Auto tech
12v_LiFePO4_battery_voltage_chart.png


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

Well-known member
Joined
Jan 8, 2022
Threads
9
Messages
572
Reaction score
937
Location
Georgia
Vehicles
Prev: 2000 SVT Lightning; Now: 2022 BEV Lightning
Occupation
Engineer
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.

Ford F-150 Lightning 12V battery replacement Ohmmu SOC


Ford F-150 Lightning 12V battery replacement Car Scanner SOC
 

Maxx

Well-known member
Joined
Jul 15, 2021
Threads
44
Messages
2,146
Reaction score
2,531
Location
MD
Vehicles
23 Pro, Sky RL, Frontier, Aurora V8, Buicks, ....
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.

Ohmmu SOC.jpeg


Car Scanner SOC.jpeg
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?
Sponsored

 
 







Top