{"id":11454,"date":"2023-10-04T22:39:33","date_gmt":"2023-10-04T22:39:33","guid":{"rendered":"https:\/\/www.solar.com\/learn\/?p=11454"},"modified":"2023-10-04T22:39:33","modified_gmt":"2023-10-04T22:39:33","slug":"which-solar-battery-lasts-the-longest","status":"publish","type":"post","link":"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/","title":{"rendered":"Which Solar Battery Lasts The Longest?"},"content":{"rendered":"<p>One of the most important features of a battery is how long it lasts. After all, there is a reason that Energizer has been advertising that their batteries \u201ckeep going, and going, and going\u201d for the better part of 25 years\u2026<\/p>\n<p>But when it comes to investing in home battery storage, the stakes are much higher than picking a Triple-A battery to power your TV remote.<\/p>\n<p>With tens of thousands of dollars on the line and dozens of solar battery brands to choose from, it\u2019s worth taking a minute to consider which solar battery lasts the longest. In this article, we\u2019ll explore which battery type lasts the longest and the <a href=\"https:\/\/www.solar.com\/learn\/best-solar-batteries\/\" target=\"_blank\" rel=\"noopener\">best solar batteries<\/a> to buy if longevity is your primary concern.<\/p>\n<p><a href=\"https:\/\/www.solar.com\/dashboard\">Design a custom solar &amp; battery system from the comfort of your home.<\/a><\/p>\n<h2>What is the longest-lasting solar battery type?<\/h2>\n<p>The lithium-ion batteries that dominate today\u2019s residential energy storage market have a usable life (70% capacity or more) of 10-15 years, which is roughly double the lifespan of the lead-acid batteries used in the past. However, the lifespan of a lithium-ion battery also depends on its chemistry and how you use it.<\/p>\n<p>There are two lithium-ion battery chemistries that are especially widespread in today\u2019s market:<\/p>\n<ul>\n<li><strong>Lithium iron phosphate (LFP)<\/strong> is used in Franklin Homepower, sonnenCore+, Panasonic EverVolt, Enphase IQ, and SunPower SunVault batteries<\/li>\n<li><strong>Lithium nickel manganese cobalt oxide (NMC) <\/strong>is used in LG ESS Home8, LG RESU Prime, Generac PWRcell, and Tesla Powerwall 2 batteries<\/li>\n<\/ul>\n<p>In general, LFP batteries tend to last longer than NMC because they are more resistant to high temperatures that degrade battery life. However, the lifespan of a battery also depends on how you use it.<\/p>\n<p>According to a <a href=\"https:\/\/pdf.sciencedirectassets.com\/271429\/1-s2.0-S0306261920X00043\/1-s2.0-S0306261920301446\/am.pdf?X-Amz-Security-Token=IQoJb3JpZ2luX2VjEEQaCXVzLWVhc3QtMSJIMEYCIQDUd9lLCRpNacv4THfDQsT4Nt5M3CSRTybNQvE2OdZZ2QIhALh9nbITuQIZrAgM%2BMa4Bwq8YRqkAosyCFUdV3ZOJaVFKrIFCE0QBRoMMDU5MDAzNTQ2ODY1Igx7tN4JZ9wtE4DIjegqjwWosT7mNGcWDRaFLD5OuiDVuAqUvzTcf9rwMf9T5KJaCa4pzb5TrWj38U84c59H1omBG0dD4hgv%2BiQs1OWlaXLFDEw8IBp1vKWuO6%2FO6fZIrb7zRRko2rWa0caV1RVh%2BxKXRyqFrd6n6QSMZBOJcQCKsxri02VCcDWrAtRH%2FW5UVYrmckecpI767u0jJYsqpTWz6rAjOCnQLolO%2B9s7v1KJeBC2BoeG25debX8TGLvLjCyyIyfgLVHxTubXzaMlktdjKa4QMChNTH8sYxGWincWjXa%2FRM2EcOweT6z9ZG44Lu2y3C%2BJ%2Bpa6cpUHuwY6riCcH70TTIS46SWWsD2p2YcqiY67bK3YIL3s%2FRXlrFKTjGumS%2B33YVYYo4CufQ0HvrOdyivEaBr6ApdZR9h2NnLoShoNDNEhoL%2BdhCPMG33RJyMd%2FxW2JrZ5%2FCAhBUVXFUJdr4itp%2Bm1nB5opymIT48Dk%2BLuSmcOp85QWQpxC8zGu%2FuqZlqODNJ6rlRCSp5RFS%2FewchafKMdEMiVCTbdLrde9y50iKnaHlXpuMxS1Nwqr1FEEyVLDf%2FXwhSmV8tAvEkKu8xt4q8daEc4TAMsQ%2BK5TF59K6bKOLk95gsiM1NgY1RuzFzEojpJPDzq9ylZvqTgvldNtveQZoAlI61MS9BGwhM0VydYwU5Mn6eyCp%2BXgLlqAsc1%2BVSA0FB1axO536Sb6s7uLKdCZWi8izXz2S%2BYdCi%2FHndaz%2BYd70MoFJnm0Zu7n%2BGbNeAwafoirnIPd4IQuDb9D83MMjmxqhA3OGiRCnikASlcYFgPTuVeLF2vMk%2B7HwUft7yoL%2BEg9RFKItxW2hfFEshSOPPKHcwqJKv8gNKQACQqwTBq0i6IvF%2FgMIf39qgGOrABy1xAL84xY6FyL6wJv%2Fu9s5xBAy4E2MdzgB%2FmxISJPeTllVT7%2FDOgiNRw%2BXgMs6fFBYdSRrZduvayw08dW%2FISTygZWKxq6vAmtam5x760KGNylk8r0nOkx%2FkVcNOgkP0pKeG5Ga6cDXXuLmnZyp7gzJZosU%2FMq4dTIIcgBOMVMYQ0GKJyeYVVF06jANJaO6i6Hm7wK%2F9OU%2F%2FMWzEJUjbB9pQcGWh%2F%2FWaFj%2BYEoVEQN3s%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Date=20231004T201927Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=300&amp;X-Amz-Credential=ASIAQ3PHCVTYRN7BS5HW%2F20231004%2Fus-east-1%2Fs3%2Faws4_request&amp;X-Amz-Signature=ec306cf75d7c7d8a952144b305f82242da3941451044d0cc26cab46e4c22e9f0&amp;hash=0965a59858f86e51621d228eb5081c78c28c993bff089d21d33ebc7ded8a88d3&amp;host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&amp;pii=S0306261920301446&amp;tid=pdf-69fa2f87-52b8-4b78-aa3e-4fddfd897af6&amp;sid=54a4a9b92cfe064cd5384805bb36d73cc001gxrqa&amp;type=client\" target=\"_blank\" rel=\"noopener\">2020 study<\/a> by the National Renewable Energy Laboratory (NREL):<\/p>\n<ul>\n<li><strong>LFP batteries last longer in self-consumption mode<\/strong>, where the battery is charged with solar energy during the day and discharged to power household systems at night to avoid interaction with the grid<\/li>\n<li><strong>NMC batteries last longer in backup mode,<\/strong> in which the battery maintains a high state of charge and is only discharged during grid outages<\/li>\n<\/ul>\n<p>So, if you plan on charging and discharging your battery every day, an LFP will likely last longer. If you only plan on using your battery for backup power during grid outages, an NMC battery will likely last longer.<\/p>\n<p>Next, we\u2019ll look at some of the longest-lasting battery models for each chemistry type.<\/p>\n<h2>Longest-lasting solar battery models of 2023<\/h2>\n<p>Alright, so we\u2019ve narrowed the longest-lasting solar batteries into two lithium-ion chemistries: LFP and NMC. Now let\u2019s take a step further and look at some of the longest-lasting battery models for each chemistry based on the warranty terms offered by each manufacturer.<\/p>\n<p>Battery warranties guarantee that a certain level of usable storage capacity will remain after a set number of years or usage, whichever comes first. Usage is measured in two ways:<\/p>\n<ul>\n<li><strong>Cycles:<\/strong> The number of times a battery charges and discharges<\/li>\n<li><strong>Energy throughput:<\/strong> The total amount of energy the battery charges and discharges<\/li>\n<\/ul>\n<p>In 2023, a \u201cstandard\u201d solar battery warranty is for 70% of nameplate capacity after 10 years and 3,000 to 4,000 cycles. The batteries on the lists below carry warranties that go above and beyond this standard in some way.<\/p>\n<h3>Longest-lasting LFP battery warranties<\/h3>\n<p>Lithium iron phosphate (LFP) has emerged as the longest-lasting battery type on the market, as indicated by 12 and even 15-year warranties (as opposed to the standard 10 years).<\/p>\n<p>Some of the longest-lasting LFP batteries are listed in the table below.<\/p>\n<table width=\"624\">\n<tbody>\n<tr>\n<td width=\"208\"><strong>Brand\/Model<\/strong><\/td>\n<td width=\"133\"><strong>Usable capacity<\/strong><\/td>\n<td width=\"283\"><strong>Warranty terms<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Franklin Home Power<\/td>\n<td width=\"133\">13.6 kWh<\/td>\n<td width=\"283\">70% capacity after 12 years or 43MWh throughput<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">sonnenCore+<\/td>\n<td width=\"133\">8.6 kWh<\/td>\n<td width=\"283\">70% capacity after 10 years or 10,000 cycles<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Panasonic Evervolt<\/td>\n<td width=\"133\">9 \/ 13.5 \/ 18 kWh<\/td>\n<td width=\"283\">70% capacity after 12 years<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Enphase IQ 5P<\/td>\n<td width=\"133\">5 kWh<\/td>\n<td width=\"283\">60% capacity after 15 years or 6,000 cycles<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">SunPower SunVault<\/td>\n<td width=\"133\">13 \/ 19.5 kWh<\/td>\n<td width=\"283\">70% capacity after 10 years (unlimited cycles)*<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size: 10pt;\"><em>*<\/em><a href=\"https:\/\/us.sunpower.com\/sites\/default\/files\/sunpower-limited-product-and-power-warranty-for-sunvault.pdf\" target=\"_blank\" rel=\"noopener\"><em>Unlimited cycle warranty<\/em><\/a><em> may not be valid for \u201chomeowners who charge over 5MWh from sources other than PV\u201d<\/em><\/span><\/p>\n<p>A few LFP battery warranties that stand out:<\/p>\n<ul>\n<li>Enphase is among the first manufacturers to offer a 15-year warranty<\/li>\n<li>SunPower is among the first manufacturers to offer an \u201cunlimited cycle\u201d warranty, but there is a clause that limits charging from the grid<\/li>\n<\/ul>\n<p>Now, let\u2019s see how the top LFP battery warranties compare to the top NMC battery warranties.<\/p>\n<h3>Longest-lasting NMC battery warranties<\/h3>\n<p>In general, the warranties for NMC batteries are shorter and cover less usage than the warranties for LFP batteries. The table below shows the warranty terms for the best NMC batteries on the market in 2023.<\/p>\n<table width=\"624\">\n<tbody>\n<tr>\n<td width=\"208\"><strong>Brand\/Model<\/strong><\/td>\n<td width=\"208\"><strong>Usable capacity<\/strong><\/td>\n<td width=\"208\"><strong>Warranty terms<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"208\">LG ESS Home8<\/td>\n<td width=\"208\">14.4 kWh<\/td>\n<td width=\"208\">70% capacity after 10 years or 59.8 MWh throughput<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">LG RESU Prime<\/td>\n<td width=\"208\">9.6 kWh<\/td>\n<td width=\"208\">70% capacity after 10 years or 32 MWh throughput<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Generac PWRcell<\/td>\n<td width=\"208\">9 kWh (3 x 3 kWh modules)<\/td>\n<td width=\"208\">70% capacity after 10 years or 7.65 MWh per module<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Tesla Powerwall 2<\/td>\n<td width=\"208\">13.5 kWh<\/td>\n<td width=\"208\">70% capacity after 10 years (unlimited cycles)*<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-size: 10pt;\"><a href=\"https:\/\/www.tesla.com\/sites\/default\/files\/pdfs\/powerwall\/Powerwall_Warranty_USA_2-0.pdf\"><em>*Unlimited cycles warranty may not apply if the battery is charged using grid electricity.<\/em><\/a><\/span><\/p>\n<p>A few things that stand out:<\/p>\n<ul>\n<li>We were not able to find an NMC battery warranty length beyond 10 years<\/li>\n<li>Tesla offers an \u201cunlimited cycle\u201d warranty on the Powerwall 2, however, it only applies to charging the battery with solar energy<\/li>\n<\/ul>\n<h2>Choosing the right solar battery<\/h2>\n<p>To recap, based on the manufacturer\u2019s warranties (which tend to be conservative) you can count on today\u2019s lithium-ion solar batteries to last at least 10 years \u2013 and perhaps up to 15.<\/p>\n<p>However, your battery life is influenced by:<\/p>\n<ul>\n<li>Its chemistry (LFP vs NMC)<\/li>\n<li>How you use it (self-consumption vs backup)<\/li>\n<li>Its storage conditions (hot batteries = shorter lifespan)<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.solar.com\/dashboard\">Connect with an Energy Advisor to compare living pricing on the long-lasting batteries mentioned in this article.<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the most important features of a battery is how long it lasts. After all, there is a reason that Energizer has been advertising that their batteries \u201ckeep going,&#8230;<\/p>\n","protected":false},"author":51,"featured_media":11455,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":""},"categories":[93,45],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.5 (Yoast SEO v19.10) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which Solar Battery Lasts The Longest? | Solar.com<\/title>\n<meta name=\"description\" content=\"We explore which solar battery lasts the longest based on its chemistry and manufacturere warranty.\" \/>\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.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Which Solar Battery Lasts The Longest?\" \/>\n<meta property=\"og:description\" content=\"We explore which solar battery lasts the longest based on its chemistry and manufacturere warranty.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\" \/>\n<meta property=\"og:site_name\" content=\"Solar.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Solar.comOfficial\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-10-04T22:39:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/assets.solar.com\/wp-content\/uploads\/2023\/10\/Which-Solar-Battery-Lasts-Longest.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sam Wigness\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SamuelWigness\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Wigness\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\"},\"author\":{\"name\":\"Sam Wigness\",\"@id\":\"https:\/\/www.solar.com\/learn\/#\/schema\/person\/b594f06d4c2b5e6a0e85af02b90fb883\"},\"headline\":\"Which Solar Battery Lasts The Longest?\",\"datePublished\":\"2023-10-04T22:39:33+00:00\",\"dateModified\":\"2023-10-04T22:39:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\"},\"wordCount\":929,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.solar.com\/learn\/#organization\"},\"articleSection\":[\"How Do Solar Batteries Work?\",\"Solar Battery\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\",\"url\":\"https:\/\/www.solar.com\/learn\/which-solar-battery-lasts-the-longest\/\",\"name\":\"Which Solar Battery Lasts The Longest? 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