First of all the upgrade has turned my board into a beast, I love it.
The only issue I had was the battery which was approximately 2mm too big for my old cover. The only way I could get it to fit in was by spreading the bottom of the case out with pliers ( difficult to do) and adding an 20 mm rubber seal to make it water tight. It is a very very tight fit. I have only ridden it for approximately 100kms and it is performing brilliantly, I use 7 inch air tyres and I have not been able to flatten the battery in one run as yet as my feet hurt after 40 Kms, bloody brilliant for 7 inch wheels, I think I’d get between 45 and 50 Kms with the big tyres. So glad it did the upgrade. Only used the 1 and 2 power setting , that’s fast enough for me.