Epson EMP-7550 Owner's Manual page 28

5. To insert the batteries in the remote control device, slide
off the battery compartment cover as shown below.
6. Insert the two AA batteries included with the projector.
Make sure the polarity of the batteries is correct.
7. Replace the battery compartment cover.
When replacing batteries, take the following precautions:
• Do not recharge the used batteries or expose to fire or
water.
• Replace batteries as soon as they run out. If the batteries
leak, wipe away battery fluid with a soft cloth. If fluid gets
on your hands, wash them immediately.
• Remove the batteries if you will not be using the projector
for a long period of time.
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