This is interesting, since from teardowns it looks like there&#x27;s literally just a AAA battery in there:<p><a href="https:&#x2F;&#x2F;mpetroff.net&#x2F;2015&#x2F;05&#x2F;amazon-dash-button-teardown&#x2F;" rel="nofollow">https:&#x2F;&#x2F;mpetroff.net&#x2F;2015&#x2F;05&#x2F;amazon-dash-button-teardown&#x2F;</a>