Harley FXDF Dyna Fat Bob 1584, 1690 500cca Lightning Start 20ah High Performance Sealed AGM Motorcycle Battery replacement for year 2008, 2009, 2010, 2011, 2012, 2013, 2014 Factory Activated Sealed AGM Maintenance-Free, no acid water needed, never needs re-filling Included Harley terminal hardware for flush front or top mount. Ultra High Performance Starting Power OEM compatible replacement battery Polarity | - ||||| + |