Normal amps is 25-35 in turbo mode. 200 amps would be a dead stop of the motor and the controller will automatically shut down at those amps. That would be if you had the scooter wot and against a wall. Anything over 100 amps like going up a steep hill at a slow speed and the chain will probably skip anyways. It is almost impossible to get over 100 amps just because since it is a stand up scooter you would just be thrown off of it with that much power at high speeds, unless maybe you have a dirtbike track or something that is meant for speed and keeping your balance. Just get atleast a 10c pack(s) totaling 10ah or more total and you will be fine. BMS is not needed using a balance charger but if you use the onboard charger(which will charge 7 series packs) you will need that to balance them keeping any cell from over voltage. For undervoltage you can use a lipo meter and set the alarm to around 3v at any cell, at that voltage you will notice the scooter drop from medium speed(about 3-5mph less then a full charge) to a lower speed. The controller shuts off at a voltage that will be under 2.5v a cell if you use 7s which will either start a fire or destroy the pack, using 6s it will shut off at a safe 3v a cell as long as your cells are not out of balance. It is important to monitor the cells while riding. On my pack with turnigy's they have been fussy with the voltages. I have always used a pcm/bms but after about 50 cycles I would get two of the cells ending at 2.5v when the other cells would be way up at 3.2v. About another 50 cycles later it is back at 2.5v-2.9v a cell on a full drain. Without my pcm/bms shutting off my pack for sure I would have had a dead pack by now from undervoltage.
