Question - My ebike has a 1000 watt motor and 36 volt 10 Amp battery. I'm pretty happy with it for now. However, I'm curious, lets say 1-2 years from now when my 36 Volt battery dies I want to use it as a chance to get more speed.

Can I just go out and buy a 48 volt or 72 volt battery to go faster? Is that how it works? Or would I need to get a new controller, even higher wattage motor...etc etc....I honestly have no clue. I do know that getting more amps will let me go farther at the same given speed, but what about faster? Can I literally just slap a higher voltage battery on with no other additional parts and viola I go faster with the same 1000 watt motor?

Thanks in advance.