The HP JC04 2600mAh battery is a 4-cell, 14.8V Li-ion battery with a capacity of 2600mAh and 38Wh. It is compatible with various HP Notebook models, including those in the 15-BS, 15-BW, 17-BS, and 17-AK series. The battery is CE, FCC, and RoHS certified, indicating it meets safety and quality standards.