The Vertex Standard FNB-V104LI has been replaced by the FNB-V132LI UNI battery.
FNB-V104LI is an incredible 2000 mAh battery that has a run time of
16.5 hours (13.5 hours w/o saver). It will not work with new UNI
chargers. It will only work with the VAC-300B, VAC-6300B, and