Anker Expansion Battery 760 is built to last over a decade, even with everyday use, thanks to its proprietary long-lasting technology InfiniPower™, combined with LiFePO4 batteries, ultra-durable electronic components, a smart temperature control system that monitors temperature up to 100 times per second, and impact-resistant structural design. Double the Power: Use the 760 Expansion Battery (2048Wh) with Anker PowerHouse 767 (2048Wh) and scale up the battery capacity to 4096Wh. Extremely Durable and Safe: The drop-proof unibody design, electronic components with a 50,000-hour lifespan, and a ventilation grille for better heat dissipation show that the 760 Expansion Battery is designed for the long run. A secure 3-point protective clasp safeguards the battery and ensures no leakage current occurs while charging. 5-Year Full-Device Warranty: Instead of the average 2 years, Anker 760 Portable Power Station Expansion Battery is designed to reliably power your devices every day for 10 years. Additionally, it offers a superior 5-year full-device warranty for a guaranteed, worry-free experience. What You Get: Anker 760 Portable Power Station Expansion Battery (2048Wh), user manual, battery-to-host cable, 5-year warranty, and friendly customer service.