How to Replace Battery on Tennis Tutor


Tennis Tutor is a portable ball machine capable of letting the user adjust the trajectory, speed, and even the time interval between feeds. From time to time you will need to replace the battery of the Tennis Tutor to keep it functioning at optimum performance. Replacing the battery in a Tennis Tutor is quick and easy and will get you back on the court in the shortest amount of time possible.

Things You'll Need

  • Screwdriver
  • 12V, 9AH replacement batteries
  • Lay the Tennis Tutor on its side in the typical functioning position.

  • Use the screwdriver to remove the six screws holding the two large pieces of plastic casing together.

  • Remove the additional three screws holding the top half of the plastic casing together with the metal framework.

  • Take out the metal framework and the wheel right next to it. Use the screwdriver to remove the screws from the exposed switch plate.

  • Use your hands and pop the top half of the case off.

  • Unscrew the screws attached to the metal strap protecting the existing batteries and remove the old batteries.

  • Install the new batteries and secure the metal strap to keep the new batteries fastened and protected.

  • Reassemble the other parts of the Tennis Tutor in the reverse order that you removed them.

Tips & Warnings

  • Visit specialty battery stores to find suitable replacement batteries.
  • Make sure you order the correct batteries to ensure working compatibility.

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  • Photo Credit Tennis ball and the shadow of tennis net image by Elzbieta Sekowska from
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