Anker 537 Power Bank

Anker 537 Power Bank (PowerCore 24K for Laptop) - 2-in-1 Fast Charging: With a 65W total output and two USB ports, the power bank delivers high-speed charg.30W High-Speed Recharge: A full charge takes 3.5 hours—twice as fast as a standard portable charger. Wide Compatibility: Anker 537 Power Bank delivers the fastest possible charge to laptops, phones, tablets, and a wide variety of USB devices.Anker portable chargers can last you up to 300-500 full charge cycles. You'll know it's time to replace your Anker portable charger when the battery stops holding a full charge or if you notice that it takes longer to charge than it used to