[MrMCar]

Just about every BMW ever made has multiple screw down options at the battery tray. From 2.0L petrol to 3.0L diesel, and all the battery requirements therein.

 

[MrMCar]

Also, with an AGM battery, before I install it in the car I want to keep it inside and make sure it is charged 100%. Can a conventional battery charger such as a BatteryMinder charger, charge an AGM battery, or do I need a special charger?

Depends on what charger.
Personally I VERY much prefer the CTek brand. They offer many models that are dual charging type.

 

[MrMCar]

Depending on which type of battery one installs: Lead/Acid AGM or Li Ion there are different charging strategies.
Hence the need for a battery registration on the newer cars.

Also an average AGM's sweet spot is about 5-7% SOC of that of a Lead Acid.

 

[MrMCar]

I got this a few days ago:

BatteryMINDer® Model 1500: 12Volt 1.5 Amp Maintenance Charger-Desulfator

BatteryMINDer 1500 12 volt 1.5 amp temperature compensated charger desulfator extends battery life up to 4x when compared to new, non-maintained batteries.

www.batteryminders.com

Question for the pros...when I get my new battery, is it recommended I put it on this charger and make sure she's fully up to charge before installing?

Sent from my ONEPLUS A6000 using Tapatalk

Never hurts. Some batteries sit and are weak, others are fresh.
Let's say you got a weak one, now your alternator has to work hard to bring it up to snuff.

As a generality we do.

 

[MrMCar]

Batteries: I've installed them all, trust me.
Not only is how well the battery performs a criteria, it's how easily or difficult is it for me to deal with warranties, replacement & availability. That has waxed/waned over the decades.

Believe it or not currently the one that ticks off all the boxes currently is the dealer. But I'm in a different position that you. My customers (nor do I) want to drive to Wallmart and replace/buy a battery. When the supply of AGM's dips, the dealer always seems to have stock.