New Life Hack with 9v Battery! ─ American Hacker

I have make rechargable 3.7v battery inside 9v case.
It turn out good and you can power up devices with 9v connector
and work on 3.7volts.


<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }</style><div class="embed-container"><iframe src="https://www.youtube.com/embed/hYb6i7kIlOc" frameborder="0" allowfullscreen></iframe></div>

Watch Video on YouTube Watch Full-Window Video