- The HP Notebook 6-Cell Battery provides maximum battery life so you, friends and family can continue playing games, watching videos, listening to music, or viewing photo slide shows without having to plug in your AC adapter - The HP Notebook 6-Cell Battery delivers up to 4 hours battery life, requiring only 2 hours to fully recharge using your AC adaptor (whether notebook is turned on or off) - With a second battery you can work, play and watch movies up to twice as long without plugging in - Fit the slim battery profile flush under your PC - HP batteries are designed for and tested with all compatible HP notebook PCs so HP can deliver the highest quality products, services, and solutions to your home