Asus ZenPower 10050mAh Portable Charger Battery - Retail Packaging ASUS ZenPower's power-packed 10050mAh battery is perfect for fully charging any smart device. It weights just 215g and is no bigger than a credit card. Quickly put life back into all your devices with ASUS ZenPower. It offers high-speed, high-efficiency charging with up to 2.4A output. Exclusive ASUS PowerSafe Technology monitors temperature, controls both input and output voltages, and guards against short circuits to provide you with maximum safety while charging. Light weight aluminum outer casing for beauty & strength. It's ergonomic feel and a smooth, premium finish gives it a look of luxury. We take pride in running thousands of tests to provide you peace of mind and knowledge that your ASUS ZenPower can withstand 60kg of weightload and will make it through the day-to-day usages.