Battery for HP Compaq 6720 6720s 6820 6820s

Product details We get it. You're busy. You need a reliable battery that won't let you down when you need it most. We've got just the thing for you - high quality HP Compaq 6720 6720s 6820 6820s batteries so you can keep on going when others would stop. Specifications. The HP Compaq 6720 Battery comes with a 6 cell Lithium Ion battery pack which will provide up to 4 hours of battery life when running on the lowest power setting.