Chamberlain 41A6357-1 Garage Door Opener Replacement Battery by UPS Battery Center Chamberlain 41A6357-1 Garage Door Opener Replacement Battery 12V 5Ah, F1 Terminal - 100% Compatible - Arrives fully charged and ready for use High Performance Rechargeable Battery - Exceeds original specifications 1 Year Replacement Warranty Manufactured and sold exclusively by UPS Battery Center