This WeMos shield can be used to run the microcontroller und other shields from a lithium battery. It also charges ist up if USB is connected.<br /><br />Get the shield from here:<br /><a href="http://s.click.aliexpress.com/e/iEAuBiMby" target="_blank" rel="nofollow">http://s.click.aliexpress.com/e/iEAuBiMby</a><br />..and the WeMos from here:<br /><a href="http://s.click.aliexpress.com/e/VvjuZZJ" target="_blank" rel="nofollow">http://s.click.aliexpress.com/e/VvjuZZJ</a><br />Check out my Patreon page for extra stuff:<br /><a href="https://www.patreon.com/bitluni" target="_blank" rel="nofollow">https://www.patreon.com/bitluni</a><br />...<br /><a href="https://www.youtube.com/watch?v=z6Vgy1cY0XU" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=z6Vgy1cY0XU</a>