Not to pile on this thread and thank you for the great info and specs. on batteries. It was informative and will help in my swap out in the coming days. This may be a naive question (at least I am certainly not aware or I wouldn't be asking) but when you purchase a new battery do you need to charge before installing it? This may be 101 stuff but the last few I purchase over the past decade I basically just did a swap and install. You brought up in your reply above that it should be charged (prior?). Can you elaborate if you have moment? Greatly appreciated. Thanks. Also I'm a city driver/dweller and unfortunately I park on the street. Therefore, when doing a swap I am basically grabbing few tools, heading to Autozone, and half hour late hopefully I'm done. Not sure if that was important to share, but don't have a garage unless I actively pursue one.

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'14 X1 7000 miles

Hasta luego a

'10 X3 3.0 55k miles
'09 335i 55k miles
'08 528i 94k miles
'09 Mini 88k miles
'06 X5 3.0 112k miles
'04 X5 3.0 128k miles
'99 528i 120k miles