HP COMPAQ 6720s / 6730s LAPTOP BATTERY, 10.8V 4400mAh/ 48Wh
Maxelon™ Laptop Battery for Hp Compaq 6720S 6730S 6 Cell- (Black) : Amazon.in: Computers & Accessories
AC Adapter Power Cord Battery Charger HP Compaq 6720s nx7000 nx7010 613149-001 | eBay
Lapcare Battery for Hp Compaq 6720S 6730S Laptop Battery - Buy Lapcare Battery for Hp Compaq 6720S 6730S Laptop Battery Online at Low Price in India - Amazon.in
Lapgrade Compatible Laptop Battery for Compaq Business Notebook 6720S 6730S 6720S 6820S 6830S Series (Black) - Buy Lapgrade Compatible Laptop Battery for Compaq Business Notebook 6720S 6730S 6720S 6820S 6830S Series (Black)
NBP6A96 - 6-Cell Battery for HP Compaq 510 550 610 6720 6720s 6730s 6735s 6820s - CPU Medics