Hp Laptop batteries are mostly made up of lithium or Li-Ion which are both rechargeable batteries and are capable of holding the charge for an appropriate amount of time. In order to have a complete life out of the laptop battery and make it work more time efficiently, a proper care and proper battery charging also increase its life . The depth of discharge is one of the most known terms that you might be familiar with if you are in search of finding the matters related to the life of the battery. And It is usually quoted as DOD, which means for how far has the battery been discharged before being plugged back to the socket. You can find your laptop battery by searching in the search field. These laptop batteries provide maximum 3 hours battery time but extra battery capacity may increase laptop battery time.