Factory battery ongoing issues

[scott011422]

Once again you are blowing smoke... If the state of charge is 30% and the applied terminal voltage is 15VDC... the current into the battery will be well above 0.1 amps. Unless there is a means to control the current applied the electro-chemistry will determine the current in, given any specific applied voltage. Having measured both system and battery terminal voltages, they are the same. Hence I conclude that Ford did not install some kind of separate battery controller. If you control the system voltage to the temperature adjusted voltage that will charge or maintain the battery, your statement above is wrong. A battery that is fully charged is "floated" with neither ingoing nor outgoing current (and a battery can be floated at any state of charge). Your words about charging and then maintaining a battery charged are just wrong.

Not making any progress here, you just keep saying the same things over and over and now you are disagreeing with yourself even..... So with that.....Moving along................

Sponsored

 

[scott011422]

Based on what I've seen briefly monitoring the "SOC" variable, its calculation includes the aux batt if it's present. I have seen the SOC variable go from 87% to 100% in less than 15 minutes as the LFP batt gobbled up power (under-hood was already fully charged). The under-hood battery uses a shunt to measure the current while the aux battery has a current transformer, that doesn't really matter though. Below is some battery usage info regarding how much energy is consumed for a given circumstance. For those with continued issues, it's probably due to the proximity of the truck to the key fob and it constantly getting woken up. Even with welcome lighting disabled, there is still a BCM wakeup occurring, it's just using 1/5th of the power.

I had to disable welcome lighting on my mach-e because my phone would trigger it from 40' away. While I don't carry my keys in my pocket indoors, my phone does move around and simply picking up my phone and looking at it was enough to trigger the lighting wakeup to the point that it'd low-power sync almost daily.

F150 specific energy costs when tested...

How does the BMS see your LEP? Obviously, if the LEP is higher than the main 12v battery at shutdown, power is going to flow to the main to equalize the charge. Does the truck see this?

 

[Gros Ventre]

The problem is most seem to be approaching this from the computer... And what it thinks it's doing. My view is from the battery and what the chemistry says is really going on. I've observed the system voltage in real time and have checked to see if the battery voltage differs from system and it doesn't in my observation. I frankly don't care what the computer thinks it is doing, if it's programmed poorly it's not charging the battery properly. We'll see how long my non-Ford battery goes, but so far so good. Lets be clear, you cannot have a 6 cell lead acid battery being charged with an input voltage of 15 VDC long term and not be over charging it. Say what you will about what the computer thinks it is doing to the battery. BTW an AGM battery can handle mild overcharging given its recombination capability, so perhaps Ford's counting on that. Still, long term overcharging remains bad for a lead acid battery.

 

[HammaMan]

Funny you should mention it.
The Mach-E gets parked close to the RV because of the location of the L2 charger.
When my truck is parked similarly close, it sits quietly and calmly dormant even though the FOB is just inside the RV.
But the Phone-As-A-Key absolutely tortures the poor Mach-E and wakes it up while I'm sitting in the Lazyboy.

I turn Bluetooth off on the phone when I get in bed, just so the car can get some sleep while I'm attempting to as well. ?

Have you gotten the pirellis warm enough to not spin on launch yet? I have the factory wheels and tires stacked. PITA to clean and the tires aren't very impressive. Besides they hide the brembos
The latest updates on the MME will charge the 12v if there's a parasitic draw. It also turns on the DC/DC every 48hrs to put 3xx wh of energy into the 12v. Still isn't enough to keep up with the phone / sync wakeup.

 

[Snakebitten]

Have you gotten the pirellis warm enough to not spin on launch yet? I have the factory wheels and tires stacked. PITA to clean and the tires aren't very impressive. Besides they hide the brembos
The latest updates on the MME will charge the 12v if there's a parasitic draw. It also turns on the DC/DC every 48hrs to put 3xx wh of energy into the 12v. Still isn't enough to keep up with the phone / sync wakeup.

Came with Continentals and I don't know how warm I have gotten them, but all 4 can bite pretty good after just a slight moment of slip.
I probably help them by rolling into WOT rather than a violent STAB to the floor?

And I have not spent an aftermarket dime on it yet. Considering a conservative duckbill type spoiler. It already has a nice rear valance.

 

[nitrobass24]

I think this is a new high score for battery SOC. Did the ole fan setting 5 trick on a recent road trip.

 

[KTM753]

I think this is a new high score for battery SOC. Did the ole fan setting 5 trick on a recent road trip.

Have you changed your target SOC with Forscan? 100% is higher than OEM set point... maybe fan 5 trick bypasses that.

 

[nitrobass24]

I have changed mine but only to 85 or 90 as I recall.

fan 5 or higher disables/bypasses the BMS logic.

 

[apMechorse]

After dealing with ongoing low power mode issues with my second Ford battery (most of which started after the truck sat in the dealer lot for 6 months waiting for a replacement engine) I recently replaced it with the Walmart EverStart Platinum AGM Battery (Group Size H8, 900 CCA, 160 RC) and finally got 2 OTA updates the very next day, while my SOC was still over 90%.

Two days later my SOC is down around 68% and the updates stopped again, so I bit the bullet and just finished installing a NOCO GENIUS10 (already had on hand) plugged into a NOCO GCP2 15A AC dual Port Plug (~$30) that I swapped out for the single plug one I had originally installed for just the block heater, and installed the ANCEL BM300 12V Battery Monitor (~$30).

Frankly I feel it's ridiculous that we have to modify our trucks in such a way to compensate for Ford's inability to write sensible charging schedule code for the BMS, but if this helps me get my OTA updates, then so be it.

I guess I drive a hybrid 5.0 now. ?

 

[LouDog]

After dealing with ongoing low power mode issues with my second Ford battery (most of which started after the truck sat in the dealer lot for 6 months waiting for a replacement engine) I recently replaced it with the Walmart EverStart Platinum AGM Battery (Group Size H8, 900 CCA, 160 RC) and finally got 2 OTA updates the very next day, while my SOC was still over 90%.

Two days later my SOC is down around 68% and the updates stopped again, so I bit the bullet and just finished installing a NOCO GENIUS10 (already had on hand) plugged into a NOCO GCP2 15A AC dual Port Plug (~$30) that I swapped out for the single plug one I had originally installed for just the block heater, and installed the ANCEL BM300 12V Battery Monitor (~$30).

Frankly I feel it's ridiculous that we have to modify our trucks in such a way to compensate for Ford's inability to write sensible charging schedule code for the BMS, but if this helps me get my OTA updates, then so be it.

I guess I drive a hybrid 5.0 now. ?

Pics of how you mounted the plug? I’ve been wanting to do the same but couldn’t find a good place to mount the external plug.

 

[apMechorse]

Pics of how you mounted the plug? I’ve been wanting to do the same but couldn’t find a good place to mount the external plug.

Sure thing!

I got the 5.0 w/block heater which originally came with the open center grill. Wanting to swap that out I needed to find somewhere else to access the plug. At the time I did a whole thing about it here:

https://www.f150gen14.com/forum/thr...eater-to-closed-grill-w-integrated-plug.3480/

But the part I assume you're most interested in is this:

 

[LouDog]

Sure thing!

I got the 5.0 w/block heater which originally came with the open center grill. Wanting to swap that out I needed to find somewhere else to access the plug. At the time I did a whole thing about it here:

https://www.f150gen14.com/forum/thr...eater-to-closed-grill-w-integrated-plug.3480/

But the part I assume you're most interested in is this:

Thats awesome. I thought there was radar behind there for CC but now that I am thinking about it, maybe thats only on the drivers side.

Pretty easy to pop off?

 

[Snakebitten]

I think radar is on the other side.
But yeah, that's cool.

 

[apMechorse]

Thats awesome. I thought there was radar behind there for CC but now that I am thinking about it, maybe thats only on the drivers side.

Pretty easy to pop off?

Yup. Just a plastic pry tool and it pops right off. I think there's 6 or 7 of those metal clips that hold it in place.

And yeah, the radar for the Adaptive Cruise is only on the driver's side. Passenger's side is lots of empty space.

 

[UGADawg96]

Tried these steps this morning after having the "Charging System Service Soon" message the last couple days. I also kept the fan speed on 7 during my 14mi 25min commute this morning. Took the truck out for lunch and no more error message. Then I idled for 30min with the PB going on and off. Then turned it off for 30min, restarted, and still no more error message. Will see if that fixed it or not.

Sponsored