Old 01-19-18, 08:32 PM
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Location: Chicago Suburbs
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Bikes: GT Transeo & a half dozen ebike conversions.

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An LCD display is around $50, while most 20-25A controllers are about $25. I would say you're better off buying a second controller with an LCD display as a pair, as opposed to rolling the dice and hoping that an arbitrary display will work with an arbitrary controller.

And you might even have a controller that isn't compatible with any LCD display. There are plenty of these. My first kit is like that, and I like it that way. I put on a $10 bike computer to tell me speed and distance, and that's all I need.

KT controllers with the LCD-3 display are pretty nice, in my opinion. Many will take multiple voltages and I like the way one can use pedal assist and throttle.
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