HP Compaq 6720s / 6730s / 6735s Laptop Battery (HSTNN-IB42 / 10.8V Series)

Laptop Battery For HP Compaq 615 6720s 6730s 6735s 6820s 550 610 HSTNN-LB51 This HP 6720s / 6730s / 6735s battery is a reliable replacement designed to restore original battery performance for HP Compaq 6700 series laptops. It is fully compatible with multiple models including 6720s and 6730s and uses widely known OEM battery families such as HSTNN-IB42 and HSTNN-IB62. Built with high-quality lithium-ion cells, it delivers stable 10.8V–11.1V output and consistent runtime for everyday computing tasks such as office work, browsing, and general use. The battery is designed as a removable internal unit, making installation simple and fast. It includes essential safety protections such as overcharge, over-discharge, and short circuit protection to ensure safe and reliable operation.