LMP 7547 rechargeable battery

5400 mAh, 10.8V, Li-Ion polymer This battery delievers high performance and long battery life.
This battery can be charged without loss of quality despite not being fully charged or discharged.

Batteries in general have cycle lifes lasting over a few hundred cycles and performance and battery time usually decrease with age. If your current battery lasts less than 90 minutes it’s time for a new battery to provide your notebook with full battery capacity.