Am I able to upgrade the controller for my kit?

ninetimes

New Member
Probably. KT controller and display would be a possible upgrade. How many amps is the current controller? How many amps can your battery handle?

There are also some cooling options for direct drive hubs that will help it handle more power, like Statorade and hubsinks. I'm not an expert on those but you can google for more info.
 

Gkyle840

New Member
This is all that I could find on the amperage of the current controller.
Specifications:
- Wheel Size: 26"
- Top Speed: 28 MPH
- Motor: 48V 1000W
- Amps: 20.83
- Net Weight: 28.7lb

The battery is supposed to be 48 volt 20ah with Samsung cells but I am not sure what kind of draw it can handle. It was a little over $400 for the battery.
 

ninetimes

New Member
I think that number refers to the style of case. If you unscrew the black endcap, you may find a fuse on the discharge wires. That will give you an idea of the bms max discharge.
 

ninetimes

New Member
So, unfortunately that caps you at about 1000w with the current battery. 48v x 20a. Any more and you will blow the fuse and/or trip the BMS.
 

ninetimes

New Member
Sure thing. If you ever decide to upgrade the battery, there are people reliably putting 2000w+ into those motors.
 

ninetimes

New Member
On other thing - upgrading to a KT controller and LCD display will give you more adjustment and programming options, even if you don't increase the total power. Cost would be about $90.
 

Gkyle840

New Member
What would be a good battery option to get close to 2000w to the motor?
Would the KT controller be able to handle this if I upgraded the battery?
 

ninetimes

New Member
On other thing - upgrading to a KT controller and LCD display will give you more adjustment and programming options, even if you don't increase the total power. Cost would be about $90.
Edit: as far as battery choice, you need to make sure that the discharge rating matches the power you want to achieve. Unit Pack Power is a popular vendor and pretty cost competitive.
 

Gkyle840

New Member
I looked at the unit pack power batteries on Amazon and the highest rating I could find was a 52v 20ah battery with a max constant discharge current of 40 amps. Would this battery push my top speed much higher than it currently is being the battery is only 4 more volts? I assume it would definitely have a lot more torque.
 

ninetimes

New Member
It would have a lot more torque. Your top speed would be 8% higher ((52-48)/48). Motors have a Kv rating that determines how many rpm per volt a motor will spin. So, assuming you have enough torque to reach top speed (for a bicycle, it doesn't take much), the limiting factors are the motor's Kv and voltage.