Sylvania 3094 Cordless Phone Battery Ni-CD 3 AA w/ Cut Outs, 3.6 Volt, 800 mAh - Ultra Hi-Capacity - Replacement for AT&T 9400; ATT, NW Bell, Radio Shack models Rechargeable Battery Replacement Battery for AT&T 9400; ATT, NW Bell, Radio Shack models - Ni-CD 3 AA w/ Cut Outs, 3.6 Volt, 600 mAh. 100% compatible with your OEM battery - 3 year warranty. Made with high quality Japanese cells. Synergy Digital is a Registered Trademark