i was woundering if I can connect electric bike hub motor or mid motor directly to my batteries, so when i hit switch on it goes on and when I hit off it completely stops giving power. No controller, is it possible and safe for those kind of small motors?
A brushless motor will always need a controller to work.
A regular DC motor can work by just connecting them to a battery, but it’s not recommended since you get no control of the power output, so it could become dangerous.
But it all depends on what you’ll be using it for.
I guess that controller would be more than desirable. Anyway there are hub motor sets that cost around 200-250$, its not worth of risking for that much money.