Smaller and lighter than other rechargeable batteries, making it perfect for on-the-go use Proprietary Battery Size for enhanced reliability and usability 71 Wh battery energy for long-lasting and convenient performance 4 cells for maximum feasibility and productivity Delivers 15.36 V to your compatible notebook, ensuring it's always ready for use BTI Battery For Notebook Battery Rechargeable 4620 mAh 71 Wh 15.36 V...