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Rechargeable via a USB cable
Although the rechargeable batteries are not exactly new, in this case a meeting having a feature that makes them different from other and also more interesting. This is a battery including a USB port on one side so you can connect with a single cable to a computer or USB power adapter.
The advantage here is that you do not need special boots. Just an ordinary wire you would purchase electricity from a number of devices you may have at home or anywhere where you are. As interesting extra, you could also give the reverse use USB connector and use the battery to provide power to other devices through the cable.
Interestingly seems to be a design that was created some time ago. In fact, last year won a design competition, which makes inexplicable fact that you can not find it commercially in stores.
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