Yes, the kit supports 1000W / 250W conversion. Simply connect the two blue speed limit wires of the controller to achieve 250W, and disconnect them to achieve 1000W. If you want the front wheels, you can check this link

https://www.voilamart.co.uk/e-bike-conversion-kits/outdoor-cycling/1000w-48v-ebike-conversion-kits/26-inch-wheel-kits/front-wheel/voilamart-26-48v-1000w-electric-bike-front-hub-motor-wheel-conversion-kit-with-lcd-dispaly.html

The system requires a 48 Volt electrokinetic cell battery with a nominal capacity not less than 11.6Ah.

We also offer fat bike wheel. But the required rear dropout is 170mm, and the front wheel dropout size is 100mm.You can check this:https://www.voilamart.co.uk/snow-wheel.html

This kit is not suitable for 9-speed gears.

Connect Line No.3 to the controller and it will turn into 250W. Disconnect it and it will turn into 1000W.

Our battery interface is a wire core, you can purchase a conversion interface.Recommended XT60, XT90.

No,the 1000W controller is incompatible with 1500W motor.

Yes,it can work at 1000W with throttle.

Not suitable for cassettes.

7 Speed Freewheel.Screw-on type.

No,it's not.

If you want a waterproof kit,you can check this one: https://www.voilamart.co.uk/e-bike-conversion-kits/outdoor-cycling/1000w-48v-ebike-conversion-kits/26-inch-wheel-kits/voilamart-48v-1000w-waterproof-electric-bike-bicycle-conversion-kit-26-rear-wheel-lcd.html

The battery is not included.You need to buy seperatly.

Perhaps you can check if there is a limited speed line, just disconnect it.

Acid battery or Lithium battery is ok, So long as the battery can provide the voltage which is consistent with the controller and the electrical machinery voltage.

You can use several batteries series connections so that it can reach its specified power. However, we suggest you do it by a technician, that will be safer so that it will not damage the wheel kit or influence its function.