I tried an old school trick to save money on powering my devices, and it actually worked

It might not seem like it, but small purchases add up quite a bit over time. You can easily see it in something like a Netflix subscription without ads, a service that costs close to $20 a month, which isn't much on its own, but something that adds up fast. By the end of the year, that number balloons to over $200, and you might be left scratching your head thinking about how you spent so much money. Although there's not much you can do to save cash on a Netflix subscription aside from canceling it, there are other areas you can save money in.

Source : https://www.pocket-lint.com/rechargeable-battery-switch-save-money/