Vertex/Standard (Battery Zone) FT11R/41R/51R Series, NiMH Quantity in Basket: None Code: BZ36238MH Price: $75.00 Shipping Weight: 3.00 pounds Quantity: Battery Zone BZ36238MH 10 Volt, 900 Mah NiMH Battery for Vertex/Standard FT11R/41R/51R Series Models.