Hitech - Replacement Cordless Phone Battery for Motorola 61, 671, 681, HCNN4005A, MD61, MD671, and MD681 Phones Capacity: 1500mAh Voltage: 2.4V Chemistry: Ni-MH Fits Motorola 61, 671, 681, HCNN4005A, MD61, MD671, MD681 Replaces Panasonic P-P546, P-P546A/B, HHR-P546A, and Vtech VT-2431 batteries