Battery Detail : 20 Volt, 6.0 Ah, 120 Wh. Lithium-ion battery. Compitable Device: Battery for SKIL PWRCORE 20V series cordless power tools. Replacement for Skil battery model BY519601, BY519603, BY519702,etc. Long Lasting & High Capacity: Utilizing lithium-ion battery cells for increased energy density, enhanced power, extended usage time, and long usage cycle. Easy to Install & Reliable Quality: Directly replace the battery on Skil 20V PWRCORE series cordless tools, no need extra tools. The product's reliability is confirmed through tests such as FCC, UL, CE, RoHS, and more. It comes equipped with protection modules including temperature, overcurrent, and overvoltage protection, safeguarding both the battery and your tools. Product Services: 12 months warranty. If you have any questions about the replacement 20V battery and charger, 24*7 customer service. 20V 6.0Ah Battery for SKIL PWRCORE 20V Series Cordless Power Tools, Replacement for Skil Battery Model BY519601, BY519603, BY519702, Lithium-Ion Battery