You can then select batteries and wire that can properly handle this current. Lancaster High School used clip leads to connect the batteries to the motor circuit. As a result, they had a few surprise failures. The clip leads were not rated for the current drawn by the motors and heated during stalls. They also tended to break contact while the robot moved through the obstacle course.
Wire nuts produce similar problems.
Darth Bot's team wrapped all wire nuts with electrical tape to reduce failures. Use crimp connectors and terminal blocks for power wiring. As an alternative, invest in Molex or AMP connectors. Digi-Key sells connectors, semiconductors, batteries and more. Use a Suspension System and Adequately Sized Wheels Robots must travel up ramps that don't always have clean seams.