Vertex FNB-V57 battery by AtBatt.com is designed for use with VX160, VX180, VX210, VX400 2-way models. AtBatt.com 2-way batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility, and safety to exceed original equipment manufacturer specifications. • Chemistry: NiMH • Rating: 7.2V 1500mAh Capacity