1.0Engineer News Networkhttps://www.engineernewsnetwork.com/blogrich600338<blockquote class="wp-embedded-content" data-secret="9vD74Zpvo5"><a href="https://www.engineernewsnetwork.com/blog/you-need-the-right-9v-battery/">You need the right 9V battery</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.engineernewsnetwork.com/blog/you-need-the-right-9v-battery/embed/#?secret=9vD74Zpvo5" width="600" height="338" title="“You need the right 9V battery” — Engineer News Network" data-secret="9vD74Zpvo5" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.engineernewsnetwork.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> https://www.engineernewsnetwork.com/blog/wp-content/uploads/2017/09/ULT033-Image.jpg20891427Michele Windsor looks at 9V batteries and three applications that require better engineered batteries than those you pick up on your weekly shop Human beings are nothing if not creatures of habit. This is especially the case when it comes to buying consumables like batteries. We know batteries are important but we continue to buy …