New Radbike?

[BKing]

On the bikes with the battery inside the frame, how do you replace or repair those batteries?

 

[BigNerd]

On the bikes with the battery inside the frame, how do you replace or repair those batteries?

There are integrated batteries that are removable.

 

[AHicks]

On the bikes with the battery inside the frame, how do you replace or repair those batteries?

There are exceptions of course, but the idea is so popular they've standardized them. Many are made by Reention. My newest uses the Reention Dorado. Google Reention Batteries.