Changing the battery can be very awkward due to the lack of space between the inside frame and the battery compartment and I am sure a welder will find this very difficult and with the battery sitting directly on the pcb board, breaks very easily.These issues are causing customer complaints and helmets being returned after very little use, this is not going to give Parweld a good name, we have 9 returns already this year.Please advise on what improvements you propose.