Replacement battery fits 37 Anritsu compatible models. Specifications: 2100mAh, 10.8V, Nickel. Compatible with: MT9083A, MT9083A8, MT9083B, MT9083C, S113C, S114B and 31 more compatible models. Replaces: Anritsu 633-27, Bard Medsystem OM0045. Anritsu replacement battery designed for Medical devices. Dependable performance you can count on.