{"id":97241,"date":"2026-01-17T06:04:03","date_gmt":"2026-01-16T20:34:03","guid":{"rendered":"https:\/\/www.solarquotes.com.au\/blog\/?p=97241"},"modified":"2026-01-18T17:04:58","modified_gmt":"2026-01-18T07:34:58","slug":"four-battery-backup-myths-that-need-to-die","status":"publish","type":"post","link":"https:\/\/www.solarquotes.com.au\/blog\/four-battery-backup-myths-that-need-to-die\/","title":{"rendered":"Four Battery Backup Myths That Need To Die"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-97242\" src=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/battery-blackout-back-up.jpg\" alt=\"A man reading by candlelight\" width=\"1200\" height=\"624\" srcset=\"https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/battery-blackout-back-up.jpg 1200w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/battery-blackout-back-up-300x156.jpg 300w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/battery-blackout-back-up-1024x532.jpg 1024w, https:\/\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2026\/01\/battery-blackout-back-up-768x399.jpg 768w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>Fifteen years ago, one of the hardest parts of selling solar was explaining why your panels shut down in a blackout. No grid meant no power, even on a sunny day.<\/p>\n<p>Today, batteries fix that. Yet I am seeing thousands of homes getting large batteries with either no backup at all or poorly designed backup. That&#8217;s because &#8211; as batteries go mainstream &#8211; a set of myths has taken hold.<\/p>\n<p>Let\u2019s knock them over.<\/p>\n<h2><!--more--><strong>Myth #1: You should not even bother installing backup<\/strong><\/h2>\n<p>Some shonky retailers actively advise against any backup, blaming warranties or vague electrical issues. This is rubbish. Good hardware, installed properly, can back up a home or essential circuits, and it is covered by warranty when done right.<\/p>\n<p>Of course not paying for backup can be a valid choice if you live in an area where grid outages are so rare to not worry about, but any retailer advising <strong>all<\/strong> their customers against backup without consideration of their local grid\u2019s reliability is showing their cards: they don&#8217;t have faith in their subcontracted installers to handle the slightest complication. Avoid these retailers at all costs.<\/p>\n<h2>Myth #2: Backup must be whole house or nothing<\/h2>\n<p>The opposite of the retailer who is scared of wiring a backup circuit is the retailer who claims anything less than a whole-house backup is subpar. Whole-house backup is not always the best choice. In many homes, backing up only essential circuits is smarter. Your battery lasts longer, avoids overload, and delivers power where it matters when you can&#8217;t top up from the grid.<\/p>\n<h2>Myth #3: Backup limits self-consumption<\/h2>\n<p>I am now seeing at least one new-to-Australia manufacturer claim that if a circuit is not backed up, it cannot use the battery for self-consumption. That is horseshit from a clueless support team. A battery can both support normal daily use on all circuits and also provide backup on only essential circuits. These two things work together with proper design and well-trained installers.<\/p>\n<h2>Myth #4: Three-phase homes need three-phase backup<\/h2>\n<p>If you are putting a battery on a three-phase house, it&#8217;s a valid design to use a single-phase battery system. I only back up one phase on my three-phase house, and it works perfectly, including solar charging the battery during blackouts<sup class='endnote'><a href='https:\/\/www.solarquotes.com.au\/blog\/four-battery-backup-myths-that-need-to-die\/#en-97241-1' id='enref-97241-1' onclick='return hhEndnotes_show(97241)'>1<\/a><\/sup>. Don&#8217;t be pressured into spending more on a three-phase battery system if you don&#8217;t need or want it.<\/p>\n<p>The good news is that these backup myths are excellent filters. For sure, any retailer who repeats Myth #1 or manufacturer who repeats Myth #3 should be filtered out immediately. If they cannot get backup right, they are not the people you want designing or supplying the most valuable electrical system in your home.<\/p>\n<p><em>Phase Shift is a weekly opinion column by SolarQuotes founder Finn Peacock. Subscribe to\u00a0<a href=\"https:\/\/www.solarquotes.com.au\/weekly-newsletter.html\">SolarQuotes\u2019 free newsletter<\/a>\u00a0to get it emailed to your inbox each week along with our other home electrification coverage.\u00a0<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Fifteen years ago, one of the hardest parts of selling solar was explaining why your panels shut down in a blackout. No grid meant no power, even on a sunny day. Today, batteries fix that. Yet I am seeing thousands of homes getting large batteries with either no backup at all or poorly designed backup. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[551],"tags":[],"class_list":["post-97241","post","type-post","status-publish","format-standard","hentry","category-battery-storage","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Four Battery Backup Myths That Need To Die<\/title>\n<meta name=\"description\" content=\"Thousands of homes are getting large batteries with no backup at all or poorly designed backup. Four myths need addressing.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solarquotes.com.au\/blog\/four-battery-backup-myths-that-need-to-die\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Four Battery Backup Myths That Need To Die\" \/>\n<meta property=\"og:description\" content=\"Thousands of homes are getting large batteries with no backup at all or poorly designed backup. 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Batteries do not pay for themselves before the warranty is\u2026","rel":"","context":"In &quot;General Solar &amp; Storage News&quot;","block_context":{"text":"General Solar &amp; Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar battery backup","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/10\/solar-battery-backup.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/10\/solar-battery-backup.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/10\/solar-battery-backup.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/10\/solar-battery-backup.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2019\/10\/solar-battery-backup.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":80809,"url":"https:\/\/www.solarquotes.com.au\/blog\/battery-less-backup\/","url_meta":{"origin":97241,"position":1},"title":"Solar Backup Without Batteries: Revolutionary or Ridiculous?","author":"Kim Wainwright","date":"January 4, 2024","format":false,"excerpt":"Solar newbies are often bemused as to why their rooftop solar shuts down during a grid outage. It seems counterintuitive, given that the idea of an alternative power supply is to generate electricity separately from the grid. Installing a home battery is the obvious solution to keeping your lights on\u2026","rel":"","context":"In &quot;Solar Inverters&quot;","block_context":{"text":"Solar Inverters","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-inverters\/"},"img":{"alt_text":"Battery-less backup","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/batteryless-backup.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/batteryless-backup.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/batteryless-backup.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/batteryless-backup.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2024\/01\/batteryless-backup.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":80131,"url":"https:\/\/www.solarquotes.com.au\/blog\/enphase-sunlight-backup\/","url_meta":{"origin":97241,"position":2},"title":"Why You Can&#8217;t Have Enphase Sunlight Backup","author":"Anthony Bennett","date":"November 27, 2023","format":false,"excerpt":"You may have seen inverter companies promoting \"battery-less backup\" - a feature that lets you power lights and appliances with your solar panels during grid outages and without the need for batteries. The idea is that with the right electronics, solar systems can provide some backup electricity on sunny days,\u2026","rel":"","context":"In &quot;Solar Inverters&quot;","block_context":{"text":"Solar Inverters","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-inverters\/"},"img":{"alt_text":"screen-grab from Enphase website spruiking sunlight backup","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/11\/sunlight-backup.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/11\/sunlight-backup.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/11\/sunlight-backup.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/11\/sunlight-backup.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2023\/11\/sunlight-backup.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":1344,"url":"https:\/\/www.solarquotes.com.au\/blog\/grid-connected-solar-panels-with-battery-backup-aka-hybrid-solar\/","url_meta":{"origin":97241,"position":3},"title":"Grid Connected Solar Panels with Battery Backup (aka Hybrid Solar)","author":"Finn Peacock","date":"April 8, 2012","format":false,"excerpt":"Note: This post was written in 2012 and is way out of date. >>> Please read this post on solar batteries for the latest information. <<< A few weeks ago I blogged about my mate who really hates his electricity company. In fact he hates them so much he wanted\u2026","rel":"","context":"In &quot;Solar Installation&quot;","block_context":{"text":"Solar Installation","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-installation\/"},"img":{"alt_text":"A solar panel charging a battery","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2012\/04\/battery_solar.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":55433,"url":"https:\/\/www.solarquotes.com.au\/blog\/blackout-solar-battery-mb2216\/","url_meta":{"origin":97241,"position":4},"title":"Blackouts, Solar Power And Batteries","author":"Michael Bloch","date":"November 1, 2021","format":false,"excerpt":"Whenever there are significant blackout events, there's an uptick in solar power and battery interest. Hailstorms, heavy rain, lightning and wild winds have recently pummeled various parts of the country again; leaving left hundreds of thousands of households and businesses without mains grid electricity - and some for extended periods.\u2026","rel":"","context":"In &quot;General Solar &amp; Storage News&quot;","block_context":{"text":"General Solar &amp; Storage News","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/solar-battery-news\/"},"img":{"alt_text":"Solar power and battery systems during blackouts","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/11\/solar-power-blackout.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/11\/solar-power-blackout.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/11\/solar-power-blackout.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/11\/solar-power-blackout.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2021\/11\/solar-power-blackout.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":5386,"url":"https:\/\/www.solarquotes.com.au\/blog\/truth-battery-ready-solar-systems\/","url_meta":{"origin":97241,"position":5},"title":"The Truth About Battery Ready Solar Systems","author":"Finn Peacock","date":"February 24, 2016","format":false,"excerpt":"Most homeowners I speak to are really keen to get batteries. Just not right now. They want to wait a few years until the price has come down substantially. And who can blame them when a typical battery system in 2016 has a payback of 20 years but only carries\u2026","rel":"","context":"In &quot;Battery Storage&quot;","block_context":{"text":"Battery Storage","link":"https:\/\/www.solarquotes.com.au\/blog\/category\/battery-storage\/"},"img":{"alt_text":"Do you want your new solar system to be battery ready? First you have to know what that means...","src":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-24_19-44-20.jpeg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-24_19-44-20.jpeg?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.solarquotes.com.au\/blog\/wp-content\/uploads\/2016\/02\/2016-02-24_19-44-20.jpeg?resize=525%2C300 1.5x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/97241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/comments?post=97241"}],"version-history":[{"count":5,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/97241\/revisions"}],"predecessor-version":[{"id":97275,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/posts\/97241\/revisions\/97275"}],"wp:attachment":[{"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/media?parent=97241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/categories?post=97241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.solarquotes.com.au\/blog\/wp-json\/wp\/v2\/tags?post=97241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}