Vertex/Standard (Battery Zone) FT11R/41R/51R Series, NiMH Quantity in Basket: None Code: BZ36233MH Price: $55.00 Shipping Weight: 3.00 pounds Quantity: Battery Zone BZ36233MH 4.8 Volt, 27000 Mah NiMH Battery for Vertex/Standard FT11R/41R/51R Series Models.