Anyone own a BMW Navigator IV (Is the battery replaceable?)

[Stuartw]

Yes, def a Zumo 660 battery for the BMW Nav 4
For those that have it are about to move onto the newer water cooled BMW with sat nav prep. Yes the Zumo 660 & Nav 4 will fit in the cradle and charge. But the whizz wheel thing doesn't interact with it in the same way as if it was a Nav 5 or 6.
I.e. Flick through the screens, show bikes details and tyre pressure etc. But as mentioned, will still charge and is more than a capable machine.