HP EliteBook 820 G3 Laptop Battery Replacement (SN03XL / ST03XL Series)

This HP 820 G3 original replacement battery is designed to restore full performance and battery life for HP EliteBook 820 G3 business ultrabooks. It is fully compatible with the SN03XL / ST03XL battery family commonly used in the 820 G3 and related 725 G3/G4 models. Built with high-quality lithium-ion cells, it delivers stable 11.4V output and consistent runtime for everyday productivity tasks such as office work, browsing, and business applications. The battery is an internal slim type designed for ultrabook chassis, and it includes essential safety protections such as overcharge, over-discharge, and short circuit protection to ensure safe and reliable operation.