Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
Hello, I can not open the back of the remote control to change the battery. Any suggestions? Thanks so much!
I have the same remote. You need to wedge in a flat-head screwdriver. Push it into the plastic and turn. This will release it from the catches. Now I just have to find out where to get the flat 1/2" lithium battery to replace it.
Posted on Aug 02, 2009
9v Battery Compartment? Little screw under the battery perhaps?
Posted on Mar 11, 2009
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Posted on Jan 02, 2017
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Setting up the remote control
WARNING: Keep the remote control battery away from children. It may cause a fire or
chemical burn if mishandled. Do not recharge, disassemble, heat above 100°C (212°F), or
incinerate. Dispose of used battery promptly. Replace only with a battery of the correct type
and model number.
Your remote control may be one of two types. Each is identified by the way
the battery compartment unlocks to install or replace the battery.
1. Place the remote control face down on a flat surface.
2. If your remote has a slot on the back, follow step A. Otherwise, follow step B:
A. Insert the tip of a ballpoint pen into the slot. Push to the side as shown and hold. Slide
the battery compartment open with your finger.
B. Using your finger, push the tab lock to the side as shown and hold. Slide the battery
instructions for types of
battery to be used
Note: Use only a Duracell, Eveready, Maxell, or Toshiba CR2032 or DL2032 lithium battery
(available at electronics stores). If you have difficulty finding a replacement battery, contact
Bose® Product Support (see phone numbers on the inside back cover).
3. Keeping the remote control face down, insert the new battery into the compartment with
the + symbol facing up.
4. Gently slide the battery compartment closed. It locks automatically.
5. Use the supplied mounting strip if you want to attach the remote to a surface in your
listening room. Peel off the protective backing to stick one piece to the back of the remote
and the other to the selected surface.
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