Parkman S1 5000mAh Portable Travel Charger External Battery Power Bank for iPhone,iPad,Samsung and More - Blue Easy to carry - It is a companion that you will use every day. The product is so much compact designed that it could be very easy to hold and put anywhere you want. Usage - Used the best battery cells and best management IC in the world. We proudly claim 500 charge/discharge cycles of the battery products. It doubles the market standard. User-friendly Design and Cool: 5000 mAh energy packed into thickness profile and with ABS+PC material. Wide Compatibility: Works with smart phones for Apple, Samsung, Google, HTC, Nokia, LG, and most other popular smart phones. Works for iPad, Kindle and most other popular tablets. Parkman power bank is designed of Polymer Lithium-Ion battery, top grade Class A battery cells inside. Which has the features of perfect safety and reliability, longer cycle life and less capacity loss.