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i have a 2021 UX fsport with very low mileage for the year.
my question is that seeing i have a low mileage car that sometimes stands for a while i sometimes have to use a boost pack to start it.
the question i have is how can i make sure that the slave battery is actually charging from the engine and not giving priority to the hybrid battery. ?
i should point out my car is not able to be parked next to my front door so trickle charging is a no go without taking the slave battery off.