If you need a power bank with replaceable batteries and don't brain sacrificing some power: Get the Panasonic BQ-CC87. Powered by approximately 4 AA or AAA rechargeable batteries, this power bank has an unusual layout that enables you to reuse it indefinitely—rendering it more sustainable than most power banks, which https://eloop-e2985285.webbuzzfeed.com/27225258/the-greatest-guide-to-power-bank