The Tridonic PC 2x36-33 COMBO is a combination electronic ballast and emergency lighting unit for linear 36 Watt T8 fluorescent lamps. It has a 3 hour rated duration To run: 2 x 36 Watt T8 fluorescent tubes and should be used with a 3 cell battery pack. This product comes with a 5 year warranty. 
The Tridonic part number: 89805268