This replacement battery for Novatel MiFi devices has a capacity of 1500 mAh / 5.6 Wh and a voltage of 3.7 V. It is compatible with Verizon Novatel MiFi 4620L Jetpack 4G, Verizon Novatel JetPack MiFi 4510L, and Sprint Novatel Wireless MiFi 4082 models. The battery is made of Li-ion material and comes with no items included. Please note that this battery contains materials or chemicals that are unsafe for drinking water, as indicated by the California Prop 65 Warning. Exposure to such may cause cancer, birth defects, or other harm. Please check with the manufacturer for specifics or visit www.p65warnings.ca.gov for more information. Dispose of the battery properly.