How to query the part number of the Apple battery?

Apple Battery Part Number Identification

Essential to the purchase of your new laptop battery is the part number. A part number is a unique identifier that is assigned to a part to simplify referencing and to unambiguously define a part within a single manufacturer. Knowing about part number of the battery will more accessible to buy a correct battery, and it is comparatively accurate to search a battery by its part number than the model name of laptop.

Examples of Apple part numbers:

A1331
A1396
020-6380-A
M9325G/A
MB471LL/A
661-4833


Apple Battery Part Number