A battery powered motor driven tip-up ice fishing line winder including a tip-up housing body supported by a platform and a U-shaped channel across a lid which retains and releases a spring-loaded flag shaft of a flag adjacent to the housing body to indicate a fish strike. The housing is divided into upper and lower portions with respective cold-resistant, waterproof, and electrical insulating outer and exterior walls. Activation of a forward-reverse sliding switch in the lower portion into alternate forward reverse positions activates the motor, which turns a drive shaft clockwise and counterclockwise, respectively, to turn the line spool on the end of a vertical line shaft in operational communication with the drive shaft in a respective direction thereby extending and retracting the fishing line on the line spool.
