@o00scorpion00o - Yeah I am going disassemble my large display CA from Tidalforce ebike and install on Yuba to test MPIII motor. The headway battery pack's BMS can only given 35A max (Dave is right unless I double parallel more ampere but grossly battery pack weight). It doesn't mean headway battery pack is best BUT it is very good battery pack easy play and plug-in for my girlfriend. I probhit using LiPo battery pack for my girlfriend. She is not experience rider.
I would love boost more voltage on headway battery pack however it will not enough room due 2 girls haul on cargo bike.
Reason, I barked this thread because in future soon, We are in saving money for the down payment on first time buyer house for ourselves and Where we will move in the area will have some hilly (8-10% grade). I concerned about the MPIII's performance limitation and I am talking about commute 2 girls 7 and 8 years old weighted 55lbs and 62% + my girlfriend 135lbs combine heavy load on Yuba haul to the school. Where the school place has bit hilly about 4-5% grade (My estimate).
@neptronix - Yeah yeah yeah............... so my Lyen controller doesn't heat up either.....Again I was talking about MPIII internal controller created super HOT.
One day if you attend the events somewhere in california someday (Never know?) and I'll let you ride my Yuba cargo bike and see yourself how the MPIII performance.