Power banks and portable chargers are available in a variety of forms, however essentially they provide extra power for your smartphone when you are unable to charge your device. With smartphone applications becoming more and more useful and intensive, the amount of power they require to operate often drains your phone’s battery quicker until eventually it runs out.
Ah, the mobile battery ─ a thing of myth, of legend... of frustration. So much sway does battery life hold over us that we buy specific phones that guarantee us a couple of days' usage. And all of this when other devices can eke out a week's worth of usage (think Amazon Kindle).
Apple just launched a new accessory called the Smart Battery Case and it is specifically designed for the iPhone 6 and 6s that has less juice than the Plus version.The battery case comes with two different colors -Charcoal Gray and White.