Vertex/Standard (Battery Zone) FT11R/41R/51R Series, Nicad Quantity in Basket: None Code: BZ36233 Price: $45.00 Shipping Weight: 3.00 pounds Quantity: Battery Zone BZ36233 4.8 Volt, 1800 Mah Nicad Battery for Vertex/Standard FT11R/41R/51R Series Models.