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![microcontrollers_power-usb](https://cdn-daily-blog.adafruitdaily.com/uploads/2015/11/microcontrollers_power-usb.png)
We’re not especially fond of USB batteries for wearable projects — USB plugs lack a latching connector and pull out too easily — but the fact remains that a lot of people already have these battery packs around for charging a cell phone, and may want to put it to other uses. You don’t need the JST socket or extension when using USB power, just a suitable USB cable. The battery can be carried in a pocket.
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