You need to register within 4 weeks of purchase to extend warranty to 6 years from the standard 2 years (1 year commercial or professional use). More details can be found here
https://webapp.bosch.de/warranty/locale.do?localeCode=en_AU
Name something unique (not used by other Brands or used in other Bosch battery packs) about the construction of Bosch Eneracer/Procore battery packs not mentioned in its promotion.