I have made a few test batches of melts with the Q230. I did them at the max load of 18%. I tested at 24 hours (since I had enough and was curious), 5 days, and 2 weeks out. One performed really well at 24 hours but the rest did better at the 5 day and 2 week mark.
Both CT and ht were great. I've had to pause on testing due to a cold. So, I'm still testing for longevity. But, I test my melts by writing down what time I turn my melter on/off and leave it on for 4 to 8 hours at a time. I take notes on how it's throwing throughout the process. Trying to simulate how customers would use it. I also do a test run with leaving it on til it dies out. Also, I do this in a bedroom and then in my kitchen/dining to see how it goes in other/larger parts of the house.
If I'm satisfied with my results I give it to testers to get some outside feedback.