Step by step guide:
1. Unscrew the battery cover and remove the batteries.
2. Locate the two copper battery contacts/tabs inside the laser battery
compartment.
3. Using a paperclip, gently pry the battery contact outward.
4. When the battery contact is slightly repositioned, it will look like this.
5. Repeat step 4 on the other battery contact.
6. Install batteries back into the device and replace the battery cover.
[Note: When installing the batteries, you should feel some resistance when
pressing them into the device. They should not drop into the device freely.]




