Disposable power bank
Many smartphone users carry a power bank with them every day because their phone’s battery cannot last an entire day. Some carry a power bank for emergency purposes. Just in case the battery dies and there is no power outlet available or if they don’t have a charging cable. The problem with power banks is that it is yet another device that you have to remember to keep charged. We can’t remember the number of occasions that when we plug in our drained phone to our power bank only to find that the battery on the power bank is empty as well. What we probably need is something like this
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