HB Optoelectronic HBB056 - Manual (Page 8)

HBB056 User Guide
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2. Hold the projector and battery together. Turn the screw clockwise and tighten it. Plug the DC plug into the DC jacket on the
projector, and then you can start using the projector.
3. You can still connect the tripod to the projector through the screw hole at the bottom of the battery.