Power banks have been designed to store the power within and supply power to devices like mobile phones, portable speakers, cameras, and other rechargeable devices. While on travel, or you do not have access to electricity ports to charge these devices, power banks comes handy in such situations. Most of the online stores having categories of electronics products available, list power banks from various brands. Flipkart, amazon, Snapdeal, Shopclues, eBay, TataCliq, CromaRetail, they all have some exclusive tie-ups with the power bank manufacturers. Top power bank brands are Samsung, Sony, Intex, Ambrane, Lenovo, Xiaomi, ERD, Callmate, Lappymaster, Feye etc. Power banks are chosen based on battery capacity in mAh, output power, number of charging ports attached to it. An important aspect of power banks is, the charging cycles available for the battery fitted within. Prices of power banks in India varies from Rs 300 to Rs 20000 or more than that.