Looking for a slim power bank that you can slip into your pocket or between your books and take with you in your backpack or suitcase, look no further, here are some of the best ultra slim portable battery chargers. These super slim and lightweight power banks will keep your devices charged many times over. With capacities starting from 5,000mAh going up to 20,000mAh, there is plenty of juice in these external battery chargers to charge even a tablet let alone your smartphone.
Some of these super slim batteries even come with its own built-in cable and connector, be it USB or Lightning so no extra cable to carry to fuss around with.
Metal Slim Power 10400 mAh
Metal 5000 mah with digital branding
Metal Power Bank 8000 mAh with dual out port & single port