If you need a power bank with replaceable batteries and don't thoughts sacrificing some power: Get the Panasonic BQ-CC87. Powered by up to 4 AA or AAA rechargeable batteries, this power bank has an strange style and design that helps you to reuse it indefinitely—which makes it much more sustainable https://angeloercnl.affiliatblogger.com/78862464/best-solar-power-bank-for-dummies