HP Compaq 6720s / 6730s Laptop Battery Replacement (HSTNN-IB42 Series)

This HP 6720s / 6730s battery is a reliable replacement designed to restore original performance for HP Compaq 6700 series laptops. It is fully compatible with both 6720s and 6730s models and uses the widely known HSTNN-IB42 battery platform, which is common across this series. 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 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.