About this replacement
Designed for Avaya, Ascom, Telstra devices. Compatible models include DH6, DECT 3730, DECT 3720, R1D, D41, 9D41, D43, i63 Talker, WH2-AAAA, T hub, 660177, 660177/R1C. Replacement part numbers include BKB201010/1, FA01302005, FA83601195, 660177 R1A, 660177 R1D, 660177 1F, BKB 201 010/1. Key specifications: 3.7V, 650mAh, Li-ion.