This Gen 1, 5Ah 40V MAX Lithium-ion battery is a powerhouse. It features an increase of over 60% in charge capacity from the original 3 Amp-hour ION® batteries, meaning extended high-performance from your ION® auger, with more holes from a single charge—up to 1600 inches of ice per charge with an 8" bit. Compatible with Gen 1 augers.