The Lind BACH1630-3470 BB-2590 Battery Charger is designed to charge a single BB-2590 military battery, with or without the SMBUS (military battery pictured is not included with this unit). - Compatible with BB-2590 military battery and BB-2590 military battery with SMBUS - Velcro strap secures the connector to the battery to ensure a solid connection between the connector spring loaded pins and the battery contacts - Green LED on adapter indicates charging state - Other input cable options available upon request