Do you mean power intensive if you&#x27;re updating the screen constantly, like you would if typing?<p>This article mentions that they&#x27;re very efficient:<a href="http:&#x2F;&#x2F;www.wired.com&#x2F;2016&#x2F;05&#x2F;get-ready-world-covered-electronic-paper&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.wired.com&#x2F;2016&#x2F;05&#x2F;get-ready-world-covered-electro...</a><p>&quot;...[e-ink price tags] will last two to five years on the coin-cell battery that comes inside.&quot;<p>That refers to tags that are updated once or twice a day at most though.