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      08-07-2019, 10:05 AM   #3
08mojo
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Drives: 2018 M3
Join Date: Mar 2018
Location: Atlanta

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I believe you are on the right track. The battery is certainly being charged under engine coasting or braking scenarios, and it is also being charged when needed while driving normally.

My car sits for over a week at a time due to travel, the longest was 12 or 13 days and the car started without any issues at all. I would not worry one bit about the car sitting for a few days. LiFePO4 batteries can take a lot more 'abuse' than the old lead acid batteries they replace.
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