Batteries: they’re both the thing that makes most modern electronics possible, and a constant challenge. For example: phones need to be plugged in every night, disposable batteries make their way into landfills, electric cars have a limited range, and they’re quite difficult to place elegantly in wearable devices.
While the LiPoly curved rechargeable battery won’t solve all of those problems, it does present an excellent solution if you need to power a smart watch/bracelet of some sort. They come in two sizes, a smaller unit that’s 30mm in length when curved and stores 41mAh of charge, and another that is 41mm that stores 90mAh. The curve of these batteries is fixed, and the images in the listing include a scale to allow you to get a good idea of how it would fit in your application.
For another take on interesting battery uses, be sure to check out the nearly 100 projects submitted for the Hackaday.io coin cell challenge. You’re sure to be inspired!