The polarity symbols are imprinted in the bottom of the compartment.
How to change battery in genie garage door opener remote.
Insert the new battery into the compartment ensuring that you have the polarities pointing in the correct direction.
Repeat the same process for the remote taking out the old batteries and replacing them with new ones.
Place the battery cover back over the remote and push the remote button to operate the opener.
You will likely need to reprogram your remote at this point.
This is easier than it may seem as modern openers come with a single button for pairing your remote though older openers use dip switches for pairing the remote.
Check again and see if your door is opening.
Like many common wireless garage door opener remotes genie s basic three button and one button remotes rely on a single cr2032 lithium coin cell battery.
Insert the replacement battery and replace the cover in the reverse steps you took to remove it.
Battery needed for this type of garage remote is a cr 2032 coin cell type.
To replace the battery open the remote s case by inserting a coin into the slot on top of the device and using it to pry off the battery compartment cover.