EGO-BA2800T POWER + 5.0Ah Battery with Fuel Gauge BA2800T

The 5.0 Ah ARC Lithium Battery is equipped with an fuel gauge. The built-in indicator lights lets you see how much run time you have left, and The ARC Lithium battery technology is the industry’s most advanced, equipped with patented Keep Cool Cell Technology, and which keeps the cells cool and prolongs the life of the battery. (Charger sold separately).