Garage Door Backup Battery Replacement 

This could become very useful for people who live in California

Does it matter with the connection of red or black with way the slide on terminal is connected as long as its slide on it right, theres not upside down or right side up, right

Thanks for the information. I have to replace mine.

my garage door is not opening but have electricity. my question if the garage door backup battery is expired will stop the garage door from opening.

can you install in an older unit that did not come originally with a battery

How do you test the new battery after 24-48 hours to see if the backup battery works