Motorola MT1000/MTX800/MTX900 Nicad (Intrinsically Safe Low Capacity), NTN4823 Quantity in Basket: None Code: NTN4823BR Price: $88.20 Shipping Weight: 3.00 pounds Quantity: Motorola NTN4823BR, Intrinsically Safe Nicad 550 Mah, 10v. For MT1000, MTX800, MTX900.