Laptop Internal Batteries

One of the easiest ways to determine what kind of battery you have is to turn off and unplug your laptop and then remove the battery to look at it. Most batteries will have a set of printed information on them, including the battery type, its model number, a part number, its voltage and a charging current.

A part number is a unique identifier that is assigned to a part to simplify referencing and to unambiguously define a part within a single manufacturer. Knowing about part number of the battery will more accessible to buy a correct battery, and it is comparatively accurate to search a  laptop batteries  by its part number than the model name of laptop.

Here are examples of identification via Battery Part Number.