I've come to the conclusion we as owners need to start monitoring our batter state of health ourselves. I'm hoping this car scanner will do that for me. I just purchased a Launch X431 CRP919 EV car Scanner and will start monitoring my HV battery after I get my truck back.
The loss of power I never really noticed because I seldom accelerate hard. But received a service soon and next charge attempt failed all red segments. They found 3 of 9 bad battery modules.
What I'd prefer to see with 3 of 9 modules bad after just 23k miles is a complete battery replacement instead of just module replacement. I'm sure those bad modules have caused damage to other modules in my battery pack which I'll be monitoring myself with the Launch X431 CRP919 EV car Scanner i just purchased once I get my truck back.
I agree. Mine is a 2022 and with just 23k miles 3 of 9 modules have gone bad.
Unlikely, Ford and it's supplier SK set a specification that individual cell groups should not deviate from, ideally this safety margin forces attention to the affected module(s) before anything catastrophic occurs.
I would agree with you if the truck completely stopped drawing power but since I could still drive it those bad modules weren't handling their part of the load so the electric motors drew more power from the good modules. The system does reduce the amount of power going to the motors but very little if any of that power is coming from the bad modules. That's also why I had 3 bad modules. Those 3 modules most likely didn't fail at the same time. Most likely one module got weak which caused more draw on adjacent modules which in progression damaged the other modules. The same thing happens with my home solar batteries if one gets weak it puts more of a load on the other batteries in the string. I was an electrical technician for the FAA and repaired 450,000 watt UPS SYSTEMS. Each had 192 AGM individual cell batteries in series. If one of those batteries started to get weak we got a warning to replace the battery before it damaged adjacent batteries. Each of the 9 modules in our lightning has many individual cells that are configured in a series and/or parallel configuration. I don't know if those cells are being monitored or just the modules. I suspect each individual cell. Regardless 3 modules going bad is not the best monitoring system in my opinion the system should have warned after the first module started to loose it's cells capacity.
With 3 of 9 modules bad before I got a charging error and service soon warning, I would say their monitoring system needs some improvements.
This is my understanding of the numbers involved: for the ER, (5P96S) there are 9 modules (arrays?), 8 mods with 11 cell groups of 5 cell pouches in parallel, and 1 mod with 8 cell groups of 5 cell pouches. So 96 cell groups x 5 cell pouches each, would be 480 cell pouches. SR (4P90S) is 90 cell groups (9mod x 10cells x 4 pouches = 360 pouches). New mid range is 5P90S. The ER 96 cells in series x nominal 3.7Vdc (approx 3.2V to 4.2V range 0 to 100% charge) is 355Vdc nominal (or 307-403V range). SR & Mid range would be about 288-378Vdc, which acounts for lower horsepower available than the ER.
There's no way all 3 of my modules died at the same time. I'll know more after I connect my Launch X431 CRP919 EV car Scanner.
I await with bated breath your results, BTW, running this conversation amongst 3 or so threads is irritating,
