3 years ago i bought a 4500 xtreme scooter with a standard controller, after 1 month I had to change it
the next one came with roughly 70A capacity but I burned it out 3 month later
the next controller was a chinese kelly with 80 A and modified mos fets (other producer and higher capacity) and works always
I remember that I asked a chinese producer to give me a controller capable of 100A and he told me that 100 was too much and his engine could not support it
I read now that a sevcom controller reaches with the same dimension and plastic cover instead of iron cast 350 or 550 A
Could somebody explain me what is the difference in the technology, between the classical chinese ones with 36 mos fets and the new ones working till 500A and 85 Volts?