We finally can put the driver, emergency pack into the driver box for our HiCloud high bay.  It will be 10W 3 hours or 20W 1.5 hours.  Good news is that because we choose high ambient temperature battery. It can work at 40 degree maximum.  And with the die-casting driver box, it looks much better.

Below picture is just for reference, not the final design. Many projects ask for emergency functions. Sometimes the end user may not ask for it. But you can educate them to get it. Imagine, there are full of heavy machines in their facility, how dangerous for their workers without emergency lighting?