When I purchased the bike it was advertised as having a LI-PO battery, so at this stage I can only assume it has a LIFEPO4 battery, but I am going to have a more detailed look at it over the next couple of days.

I don't have a volt meter yet but will aquire one if necessary?

As I am unable to find out the manufacturer of the bike will battery's from other manufacturers also be compatable with my machine?