INCLUDES: One Husqvarna B140 (40V Battery) Lithium Ion Battery for Husqvarna Power ToolsINTERCHANGEABLE BATTERY SYSTEM: The 40 Volt lithium battery fits all Husqvarna battery tools, our lithium-ion batteries are durable, easy to swap and recharge quicklyACTIVE COOLING TECHNOLOGY: 144Wh Li-Ion battery provides consistent power and longer battery lifeLED CHARGE LIGHTS: Husqvarna batteries feature an easy-to-read intuitive 3-LED charge and battery life indicator4 AMP HOURS: The Li-ion battery provides 4 Ah (Amp Hours) of power and top-class performance for Husqvarna power toolsLONG-LASTING PERFORMANCE: Rechargeable up to 600 timesREPLACES: B140 Battery replaces BLi22 Battery