Non-Invasive Identification of Macbook Battery

I'm specifically looking for the Battery Model number, like "A1234", for the sake of finding the correct replacement part.

Apple has never sold Retina Macbook Pro batteries as replacement parts except to Apple Authorized Service Providers who install them.

Apple did not design that battery to be user-serviceable. They GLUE the battery in place. Some Apple Authorized Service Providers will not service batteries because the the dangerous chemicals required to defeat the glue cannot be legally stored or used in a retail setting due to all sorts of safety, fire, and occupational health codes.

Therefore any battery part number is a moot point. The operative part number should your (shudder) chose to do it yourself is the computer's A number:

Any third-party who claims to sell original Apple batteries for user installation struggles with the concept of "truth."

The other issue is that far too many after-market batteries for Apple notebooks have a horrible reputation for being total cr@p. Some have destroyed otherwise working computers. And some at-home installers have also destroyed their computer trying to change the battery.

If you wish your Macbook Pro to live long and prosper, I strongly recommend you go to this Apple page:

Mac Repair & Service - Apple Support

and use the estimator to determine yours still qualifies for Apple service and the approximate cost. Apple stores generally no longer change batteries in-store—solvent issues again— so, even if you take yours to a retail store, they have to send it to a centralized Apple service facility where the work can be safely done. If you do the mail-in/ship-in service option you save time on each end.

You might want to look at the information here:

https://mactracker.ca/

Danovice wrote:

Within System Information, you can find the "Model Information" for your Macbook Battery, including "Serial Number" and "Device Name". How can you, from this, find the "Model Number" (AXXXX)?

This is a bit confusing question as presented, Model Number of the battery? Why.

If model number of Mac...this is not a specific identifier but identifies the group of similar machines.

ex. A1398

If you are interested in finding

Specific to your exact Mac—Model Identifier ex. "MacBookPro16,1"

ref: Identify your MacBook Pro model - Apple Support

>(Option Key) System Information>Hardware>

you can see this from the Terminal.app copy & paste:

sysctl hw.model | awk '{ print $2 }'

I believe in early Macs you could see this Model Identifier direct from the >About this Mac

Danovice wrote:

I'm specifically looking for the Battery Model number, like "A1234", for the sake of finding the correct replacement part.

Not necessary

refer to OWC/MacSales, well ahead of the curve all things Mac, with excellent customer support

MacBook Pro Battery Replacement Kits

You ask about "the battery", but a MacBook battery is 6 separate cells interconnected and glued in place. You can see them in this photo:

You can get kits to replace the batteries from several major vendors, but it is not a task for mere mortals without experience working on delicate electronics. If you damage a battery in the process they can explode, it takes toxic chemicals to release them from the glue that holds them in so you should do it in a fume hood, and it is very easy to damage other components in the Mac during the replacement process. Apple’s charge for battery replacement is quite reasonable.

I recently looked through the entire list of charges for replacing MacBook Pro batteries if still available. The answer was, in very case (in the US) US$249.

By the way, the assembly that gets swapped in most cases is the battery-keyboard-trackpad-TopPlate assembly, complete.