If you've got an old gadget you love to use even though it's a struggle because of its age, then using one of the best power banks might help you extend its lifespan. This is something I discovered when trying to eke extra mileage from my iPad Pro 12.9 , because while I still like using it for creative and professional tasks, several years of intensive use has made it hard to rely on for stints of work. That is, until I employed a portable charger to help me improve the way it works. Taking a battery-ing The thing that most affects a gadget over time is its battery life — constant cycles of discharging and recharging can greatly reduce its power capacity, meaning it lasts less and less time while unplugged. You might not notice it from day-to-day use, but over several years of use, the power drain will become noticeable. If you've got an old iPhone that seems to burn through the battery percentages, you'll know what I mean. I used to take my iPad for days out w