- Use a coin, key, or nail to twist open the battery cap on top of the ball.
- If this is your first time using the set, make sure to remove the white tabs.
- Carefully lift the metal battery arm to release the batteries, then flip the ball to dump them.
- Replace the batteries with 2x CR 1620 batteries, both facing up.
- Close the battery arm, then twist the battery cap back in place.
- Click the button to turn on the light.
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