About this replacement
Designed for Topcon, Sokkia, Hioki devices. Compatible models include Field Controller FC100, Field Controller FC2000, FC100, FC2000, FC-100, FC-120, FC-200, FC-2200, FC-2500, GMS-2, GPT-7000i, GPT-7500. Replacement part numbers include BT-30, BT-62Q, BT65Q, BT66Q, BT-66Q, Z1007. Key specifications: 7.4V, 3400mAh, Li-ion.