HP Compaq 6520 Laptop Battery Replacement (HSTNN-IB11 / 10.8V Series)

This HP 6520 battery is a reliable replacement designed to restore original performance for HP Compaq 6520 series laptops. It is fully compatible with related models such as 6520s, 6530s, and 6820s and uses widely known OEM battery families including HSTNN-IB11 and HSTNN-OB51. 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 business 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.