While it can be extremely freeing when you want to change up the scenery and work from the couch for a little bit, you certainly don't want your phone or laptop to die at an inopportune moment. Video calls and screen sharing tools can sometimes be heavy energy users, so you may find that your battery usage is higher when working remotely. Keeping your charger(s) nearby or having a dedicated place to store them can be a great reassurance the next time you're caught off guard by the 'low battery' warning.
Fun fact: the biggest power drain of many portable electronics is the screen backlight! If you can do so without causing eye strain and fatigue, turning down the brightness on your device will help keep you untethered just a little bit longer. :)