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Battery Was 9 Years Old, I Replaced But Continued To Beep. What Could That Be?
replaced 9 year old battery but continues to beep
replaced 9 year old battery but continues to beep
LiftMaster LM21XPBB Answers
Battery Was 9 Years Old, I Replaced But Continued To Beep. What Could That Be?
Could be a faulty battery. Check the chart at https://www.manualslib.com/manual/442913/Chamberlain-L...
Could be a faulty battery. Check the chart at https://www.manualslib.com/manual/442913/Chamberlain-L...