Constantly Beeping Backup Battery Opener

You've had your garage door motor, a LiftMaster Battery-backup, installed for a while. All of a sudden it's starting to beep constantly. What happened? A beeping opener is an indication that the motor is running from the battery source and not your power outlet. We see this a lot after major storms that involve lightening. The most common source of the problem we have come across is that the outlet where the opener is plugged into has died. You can do a few things to test this.
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1. Unplug the motor from one side of the outlet and plug it into the other.
2. Plug the motor cord into an extension cord and plug the extension cord to an outlet in a different part of the garage.
3. Use an extension cord to plug a different electronic to the outlet that the motor is originally plugged into and see if that electronic works.

These steps will be able to uncover what the source of the problem is. If there is something wrong with the motor, call your installer or if you installed it yourself call the manufacturer's customer service. If your outlet has gone bad, call an electrician.