I went for first ride today. I got a little less than 7 miles on 6ah battery. However, I only charged to 80% because I wanted to get more cycles out of it. But now I changed my mind. From now on, I will charge it all the way and see how it does. I'll let you know.
Overall, I really like the BBSHD kit. Even though this mid drive is not as powerful as my aft mid drive, it's compact, quiet, reliable, and seems has enough power for the trails. It was simple installation. I rode it pretty hard for less than hour. It was warm but not hot. Again, will see after I ride on the trails.
I'm not sure about the battery yet. It's nice and compact, but heats up fast. It was so hot after my ride today it wouldn't charge. My display cut off also at end of my ride. Most likely ran out of juice and not from heat. I'll keep testing it and see how it does on the trails. I may have to put some holes in the saddle to get some air flow. I may need to get bigger battery if continues this way.