radio shack 23-283 cordless phone battery ni-cd 1x5aa/c, 6 volt, 850 mah - ultra hi-capacity - replacement for rechargeable batteryEM-CPB-432C - Ni-CD 1X5AA/C, 6 Volt, 850 mAh, Ultra Hi-Capacity Battery - Replacement Battery for Rechargeable Cordless Phone Battery