sony bp-t23 cordless phone battery ni-cd, 3.6 volt, 600 mah - ultra hi-capacity - replacement for cidco cl990, sony bp-t23 rechargeable batteryBATT-23 - Ni-CD, 3.6 Volt, 600 mAh, Ultra Hi-Capacity Battery - Replacement Battery for Cidco CL990, SONY BP-T23 Cordless Phone Battery