About this replacement
Designed for Vertex Standard devices. Compatible models include VX-820, VX-870, VX-920, VX-970, VX-821, VX-824, VX-829, VX-921, VX-924, VX-929, VX-P820, VX-P920. Replacement part numbers include FNB-V128Li, AAJ62X001. Key specifications: 7.4V, 2200mAh, Li-ion.