kiwiAdventure
Registered user
Yes they are available and some guys on here run them, quite how though I do not know as the standard battery is pretty dire.
The more I look the more B*W options I find for the HP2, I am sure a dealer list exists someweher, I have just not found it yet.
You have to fit them after you get the bike as they are not a factory item. I have installed them to my HP and have had no problems with the battery.