The HP 800231-2C1 is a three-cell internal battery for a laptop, designed to fit inside the computer rather than connect as an external battery pack.
It uses Li-Polymer technology and has a listed capacity of 4036 mAh (46 Wh) with an output voltage of 11.4 V. These figures describe its electrical capacity and output for laptop use.
Use this part to replace an internal laptop battery when HP 800231-2C1 is the required part number. The listing identifies it as an HP battery for laptop power.