iPad Air Teardown: A12 Bionic Processor With 3GB of RAM, Bluetooth 5 and Larger Battery, But Lacks ProMotion Display Tech - MacRumors
New iPad 3's Battery Is 70 Percent Larger Than iPad 2
Solar Charger Built-in Micro &USB C Cables, 20000mAh Portable Power Bank with 3 Modes LED Flashlight, External High Capacity Battery Pack for iPhone/ iPad/Samsung Galaxy and Other Smart Devices
Amazon.com: Replacement Battery for iPad 3/iPad 4, Teseko Battery Kit with Repair Tools, Premium Battery Toolkit Set Compatible with A1416 A1430 A1403 A1458 A1459 A1460 : Electronics