This Lithium-ion 40V battery is designed for cold weather performance, and comes standard in-the-box with all Alpha(TM) Pro auger models. Extend your on-ice drilling capacity by bringing along an additional battery, or by replacing an older battery model. This 4 Amp-hour battery is backwards compatible to fit and power all previous ION(R) auger models (excluding ION(R) G2). 4 Amp-hour 40V Lithium-ion Cross-compatible with all Gen 1 and Gen 3 ION(R) auger models