AJC® replacement compatible with Harley-Davidson Screamin Eagle Fat Boy FLSTFSE2 1690CC Motorcycle Battery. Factory activated, this battery arrives fully sealed, charged and ready for action. Maintenance free AGM technology, no need to add acid or water ever. Exact OEM replacement guaranteed to fit easily and precisely. High impact PP case for maximum vibration resistance. Built to handle whatever the road, dirt, snow and water can dish out.