These UFO LED Emergency drivers have approval of UL and a 5 year warranty
Emergency time 90mins (Min.), Charging Time: 24hours
When AC power fails, this emergency LED driver immediately switches to the emergency mode, operating the LEDs at a reduced lumen output for a minimum of 90 minutes. When AC power is restored, the emergency driver automatically returns to the charging mode.
These Battery Backups are constructed with a long-life recyclable Lithium battery. Mounts to the junction box and provides flexible conduit for remote mounting of the test accessories. For battery capability Its recommended for at lease 10% of the wattage of the fixture that is working as battery backup. ( For example if the UFO is 300W, the recommended EM UFO battery would be the 40W and not the 25W
Power: 25W or 40W
Input Voltage: 100-347VAC 50/60Hz (*option to custom made for 277V to 480V.)
Output Voltage: 120-170 Vdc * (option to custom made for 277V to 480V.)
Emergency Time: 90 Mins * (option custom made for 270 mins or 3 hours in battery discharging time.)