Maybe I have a misunderstanding of the F150 BMS, but I think once a battery fails to meet acceptable performance the ASS is disabled until the BMS is reset. The BMS needs to be reset anytime a new battery is installed. The reason for the AGM battery is that it is capable of a long life and good amperage output at a low state of charge that modern charging strategy calls for.
Not sure how your later model truck is but on my '15 2.7 truck I was able to disable the ASS on my truck by unplugging the current sensor on the negative battery cable. Since the control system is now current blind, it charges to a voltage rather than a state of charge. As far as I can tell, there are no downsides to this. There are no warning lights.
Not sure how your later model truck is but on my '15 2.7 truck I was able to disable the ASS on my truck by unplugging the current sensor on the negative battery cable. Since the control system is now current blind, it charges to a voltage rather than a state of charge. As far as I can tell, there are no downsides to this. There are no warning lights.