This battery pack works with Vertex Standard UHF and VHF Two Way Radio Models not using UNI chargers:
VX-451U, VX-451V, VX-454U, VX-454V, VX-459U
If you are looking for the new UNI battery, please visit the FNB-V133LI that now comes standard with your Vertex VX-450 two way radios.
Li-Ion - Lithium Ion offers the best power-to-weight ratio, no memory effect and has slow loss of charge when not in use. Low toxicity, should be recycled.