radio shack 23-197 cordless phone battery 1x3-2/3aa/d - 3.6 volt, ni-mh 750mah 1x3-2/3aa/d - 3.6 volt, ni-mh 750mah - replacement batteryEM-CPH-403D - Ni-MH 1X3-2/3AA/D, 3.6 Volt, 750 mAh, Ultra Hi-Capacity Battery - Replacement Battery for Rechargeable Cordless Phone Battery