Primary battery, HP 3-cell Long Life Li-Ion (46 WHr), Up to 13 hours.
Battery appears good, have not tested the length of time.
Located in Bismarck,
Message, text, call or email to for an appointment to come and test this for yourself.
Retired so Im available almost anytime.
One last thought, I don't just sell you a computer, if there's anything wrong or you have questions, I have the answers..
After building and supporting computers for 32 years and 24 years professionally, I will also support you after the sale, within reason. Thanks for looking!