The Anker PowerCore is the original model with a 3.1 amp output and can charge smartphones, tablets, laptops and other devices at up to 2 amps while charging itself via USB or Qualcomm Quick Charge. The Anker PowerCore+ comes in 8-32 battery capacity variants that offer faster charging speeds of 1.0/2.4amps but also includes built-in safety features like low voltage protection as well as temperature control technology for maximum longevity of your device even if you forget to unplug it from the charger before going to sleep!