BMW 12V 90Ah Battery, Car Accessories, Accessories on Carousell
Battery replacement isn't cheap - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
BMW - Original BMW G01 - AGM-Battery, 90Ah (17,44) 61216924023
GENUINE BMW EXIDE BATTERY 90Ah 900A 12V AGM 2014 61217575575 61216924022 £80.00 - PicClick UK
BMW - Original BMW F30 - AGM-Battery, 90Ah (45) 61216924023
BMW Replacement battery from 90Ah, and 720A to 74Ah & 680A - YouTube