The 4 Ah Greenworks 24V lithium-Ion battery will power any of the Greenworks garden tools in the 24v range. Charge levels are displayed with the LED indicator. Leading-edge lithium battery design with high-quality cells which offer consistent charging without loss of memory or power. Charged fully in 80 minutes & 80% charged in only 40 minutes using the standard charger. Specification: Voltage: 24 V Watt hours: 86.4 Battery type: Lithium-Ion rechargeable Built-in LED display Weight: 0.92kg Warranty: 2 years