Solar-powered cellphone
It’s no secret that cell phones, while indispensable inside modern life, have a trouble with battery longevity. I find that in most cases, my Android mobile phone and apple iphone will exhaust power even while they’ve fallen into sleep routine while unplugged from the wall for about 24 hours. This can be a bit frustrating, particularly if I need the phone to function without energy for a set period of time, like on the road trip when I neglected to pack a car charger and won’t have access to a power source for several days.
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