Replacement NiMH Battery for the Nortel Norstar T7406, T740655075, M2616CT, NT8B45, NTAB9628, NT8B45AAAB and M7410. Battery fully replaces part numbers NTAB9682, M7001 and A0845917. The 1650 mAh capacity rating is 18% higher than the OEM's 1400 mAh NiMH battery, and is 83% higher than the OEM's 900 mAh NiCd battery.