Why dont we have prepaid mobile power charge cards / batteries when you run out of power and dont have to carry mobile charger around you could buy another disposable battery valid for a particular time period in card form?
by 
Anonymous
ANSWERS: 1
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I guess it would work, but there are quite a few different types of batteries, so the stores would need a very large selection. Also, chargers can be bought for pretty cheap, making people not really want to pay a repeated cost to get a new battery each time. Charges usually last 1-4 days, so you should have time to get your phone back to your car or home within that time so you don't actually have to carry a charger around with you. So, not a bad idea, but I don't know that enough people would use it to justify the space it would take in a store and the cost it would take.
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