The 5 Ah ARC Lithium™ battery is now equipped with an upgraded fuel gauge. The new built-in indicator lights lets you see how much run time you have left. The ARC Lithium™ battery technology is the industry's most advanced equipped with patented keep cool cell technology, which keeps the cells cool and prolongs the life of the battery.

• Long-lasting power, rapid charging and durability in all weather conditions
• Unique arc design and Keep-Cool battery technology keep each cell cool for long life and hard work in the most extreme conditions
• Integrated fuel gauge to let you know how much power is left in your battery
• Charges in 40 min with EGO POWER+ rapid charger
• Charges in 100 min with EGO POWER+ standard charger
• ARC Lithium™ battery is compatible with all EGO POWER+ power equipment and chargers

• https://assets.unilogcorp.com/187/ITEM/DOC/EGO_102420001_Owners_User_Manual.pdf Owners/User Manual