Features: The IQv Choice - both Lithium Ion and Nickel Cadmium batteries work with all tools. Patent pending IQv Grip twist to lock battery attachment ensures snug battery-tool connection with little risk of battery dislodging. You can count on your IQv tools, which are made with the most durable, stable, and reliable battery cells from the world's leading battery manufacturers. These intelligent batteries feature active onboard diagnostics and protection to guarantee battery longevity. Cutting-edge cell technologies and protection circuitry also deliver best in class pack battery life. In addition, receive a FREE upgrade to the industry leading IQv Warranty with product registration. IQV Lithium Ion Battery Features: • Battery charge level gauge displays exactly how much charge is left in the battery anytime • More than 35% lighter than 18v NiCd or 28v and 36v Li Ion packs • At 2.4 Ahrs, up to 30% higher capacity than NiCd and most competitive Lithium Ion batteries • No Memory Effect or Fading power. Consistent performance for the life of the pack Note - By registering your tool within 4 weeks, you receive a free upgrade to the Ingersoll Rand IQV warranty: 1-Year "Hassle Free" Tool and Charger Replacement 2-Year (or 1,000 recharge) Limited Battery Warranty 3-Year Limited Warranty for Tools and Chargers