Code Red Headsets sells a new aftermarket replacement Battery for Vertex Standard FNB-V87LI. Vertex Standard VX820, VX821, VX824, VX829, VX870, VX871, VX874, VX879, VX920, VX921, VX924, VX929, VX970, VX971, VX9774, VX929.
Voltage: 7.4V Capacity: 2200 mAh Type: Li-Ion