Kaitimmer,  It is normal for that to happen. It is due to the fact that while shut down the UPS simply wasn't reporting it. . Once it initializes again the correct information is displayed. If you go to page 31 on this link -  [URL] On step 4 is where you are seeing it correct? If so that is completely normal.  Let me know if this helps answer your question.
Hello, we just got a new Dell UPS Rack 5600W. It works fine so far, there is just one little thing that I can't explain. During our graceful shutdown tests, we discovered that after the UPS gets powered off (after all systems connected to it are shut down) the remaining load in the UPS is always 0%. That happens even if there was about 20% left in the batteries after everything got shut down. You can see the phenomenon here. Since everything seems to be working normal, the question is: Is this really a normal behaviour or should I be worried about it? [IMAGE]
Dell UPS 5600w - Remaining battery time always 0% after graceful shutdown