Epson EB-825 - Manual (Page 68)

This section explains how to replace the Remote Control batteries, the
Lamp, and the air filter.
Replacing the Remote Control Batteries
If delays in the responsiveness of the Remote Control occur or if it
does not operate after it has been used for some time, it probably
means that the batteries are becoming flat. When this happens, replace
them with new batteries. Have two AA size manganese or alkaline
batteries ready. You cannot use other batteries except for the AA size
manganese or alkaline.
Attention
Make sure you read the Safety Instructions before handling the batteries. s
Safety Instructions
Procedure
A
Remove the battery cover.
While pushing the battery compartment cover catch, lift the cover
up.
B
Replace the old batteries with new batteries.
Caution
Check the positions of the (+) and (-) marks inside the battery holder to
ensure the batteries are inserted the correct way.
C
Replace the battery cover.
Press the battery compartment cover until it clicks into place.
Replacing Consumables
68