Several Places list the 805Y along with various others it will be compatible with Example:
This Site here     Near the bottom of the page - Compatible models.  As well as HERE
You just need to be careful where you buy from as a lot of places say they are in NZ but in  fact are over Seas.
I normally get Batteries from Raytech  Just looked  Battery Here ( in Auckland) In stock.
This Site here     Near the bottom of the page - Compatible models.  As well as HERE
You just need to be careful where you buy from as a lot of places say they are in NZ but in  fact are over Seas.
I normally get Batteries from Raytech  Just looked  Battery Here ( in Auckland) In stock.
Upgrades = Old bugs replaced with new Bugs.