The 10.0Ah ARC Lithium™ Battery is the industry’s most powerful battery. It is fully equipped with an upgraded fuel gauge. The built-in indicator lights let you see how much run time you have left. With five segments wrapping the power button, you can now see how much battery power you have left in 20% increments. The ARC Lithium™ battery technology is the industry’s most advanced; it is equipped with patented Keep Cool Cell Technology, which keeps the cells cool and prolongs the battery's life. (Please note the 10Ah battery, BA5600T does not fit into the 49cm mower LM2001E) 

• Voltage: 56V, 560 Wh 
• 10. Ah Industry’s Most Powerful Battery 
• Upgraded fuel gauge to show how much run time is remaining – 20% increments 
• Patented power management system to protect your battery and enhance the life 
• Charges in 70 minutes with the Rapid Charger 
• Charges in 190 minutes with the EGO POWER+ standard charger 
• Compatible with all EGO tools ARC Lithium: Industry’s most advanced battery technology