Basement Watchdog 9 In. H X 10-1/4 In. W X 6-1/2 In. L Maintenance Free Battery

The Basement Watchdog Maintenance Free AGM Battery is completely sealed making it the perfect choice for years of reliable service for your battery backup sump pump system without having to add battery fluid or distilled water. This battery is compatible with most Basement Watchdog systems including the Basement Watchdog Emergency (BWE), Basement Watchdog Combination (DFK961), Basement Watchdog Special+ (BWSP+), Basement Watchdog Big Dog+ (BWD12-120C+) and Basement Watchdog Big Combination sump pump system (BW4000) with Special + backup controller. Look for the + on the upper left hand corner of the BWSP+ and BWD12-120C+ control panel to ensure compatibility. This battery will run the various Basement Watchdog sump pump systems intermittently for days. Connect 2 batteries to increase the run time (BWSP+, BWD12-120C+, and BW4000 with Special + backup controller). Parallel battery cables are required (sold separately).No need to add battery fluid or distilled waterCompatible with Basement Watchdog emergency (BWE), combination (DFK961), special+ (BWSP+), big combination (BW4000) and Basement Watchdog bigdog+ (BWD12-120C+)Up to 40-hour protection (based on a 10% duty cycle) on the Basement Watchdog big dog and sump pump system (BWD12-120C+)Up to 48-hour protection (based on a 10% duty cycle) on the Basement Watchdog special + (BWSP+) and Basement Watchdog big combination sump pump system (BW4000, CITS-50)Up to 80-hour protection (based on a 10% duty cycle) on the Basement Watchdog emergency (BWE) and Basement Watchdog combination sump pump system (DFK961, CITE-33)Runs pump intermittently for daysPlease note this battery is not compatible with older versions of the Basement Watchdog Special (BWSP), Basement Watchdog Big Dog (BWD12-120C) or Basement Watchdog Big Combination (BW4000) systems