These days so many of us carry round or just use devices with batteries — laptop, phone, watch, tablet — and battery life (or lack of it) is an ongoing consideration.
SciShow has some clear, useful and important information for us:
Do you wait to charge your phones battery until it’s close to dying? If you do- surprise! You’re doing it wrong. How Do I Make My Batteries Last Longer? (Published on 10 Dec 2016)
Thanks @MinuteEarth for the link.