ExpertPower 20000mAh Ultra-Slim, Universal Portable Power Bank Charger with High-Speed Charging Technology for Phones Tablets This 20000 mAh Ultra-slim power bank is made of high quality materials and top-grade chip and battery. Super-fast charging: Dual USB ((5V 1A & 5V 2.1A)) Ports,convenient to charge 3 equipments at a time you can simultaneously charge your iPad and iPhone. Powerful polymer battery is half weight of other power bank the same capacity. Flashlight: Turn on/off the flashlight by hold the power button for three seconds. Perfect for camping, travel, business trip and more. It will be good help in an emergency.Do not charge your device and recharge the power bank at the same time. Over 500 times life cycle. Over-temperature protection, over-current protection, over-voltage protection, input over-current protection, short-circuit protection.