Hitachi 326823 14.4 Lithium Ion Battery 50-Percent lighter weight than an average NiCd battery, reducing user fatigue and improving manageability without losing power 3.0Ah battery provides more power and extended run time between charges; overall battery life is extended 3x longer than NiCd or NiMH battery Battery can be used in Hitachi's DMR or DVF3 series 14.4-Volt cordless tools for more flexibility and value Battery provides a steady level of power during the entire usage ensuring the battery's full potential every time 30 satisfaction gaurante and 1-Year warranty