Tech Armor ActivePower Mobile Power Banks Keep Your Mobile Phone or Tablet Battery Full No Matter Where You Roam. Tech Armors high performance ActivePower external battery packs use only the highest quality, Grade A, Korean battery cells available on the market today. With four models to meet anyone's power needs, you can be sure Tech Armor ActivePower series has something for you. Our ActivePower 3000 is often referred to as lipstick sized, but don't let that fool you. This thing packs a punch and will double the battery life on most smartphones. It's also covered by an Industry Leading No Hassle Replacement Program. COMPATIBILITY: All Smart Phones and Tablets. Every Tech Armor powerbank is backed by the TECH ARMOR 2 YEAR REPLACEMENTS. We are committed to our customers and will send replacements for defective or unsatisfactory products. Our commitment to you is that we will provide the best customer experience, the TECH ARMOR WAY.