BMW battery replaces OEM 53030.  There is no need to break the bank when replacing your OEM power sport battery. UPG and their Adventure Power line of batteries are made to meet or exceed the highest standards in the industry. These premium conventional batteries arrive with an acid pack and must be filled and properly charged prior to being connected to your machine. The advantage of this type of battery is that you can activate the battery just a few hours prior to instalation. Enjoy the assurance of a one year hassle free replacement warranty as you ride!