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I had a flat repaired on rear wheel. After reassembly, display shows Error 34, with an unhelpful explanation of something ... ??? Bike no longer works. Manual supposedly has an Attachment of error codes, but no such attachment was on my manual downloaded. Any ideas?

20" wheel setting fixed the battery display!!!

Rattan tech support said 24" ... but I will try 20" -- thanks

Mine only showed regenerative charging one time when coasting down a hill at 35mph. The bike suddenly slowed down (like downshift in a car), and the display showed red watts with a minus sign on the right side, verus green on the left. Thanks for the info!

I got color display on Fat Bear. It shows 100% during the entire ride. When the battery is charged, it shows single or low double digit battery life after a full charge, and then slowly returns to 100% as I ride and stays there. Customer support said change voltage to 48v. But that didn't fix...