{"id":2679,"date":"2020-03-25T15:56:12","date_gmt":"2020-03-25T13:56:12","guid":{"rendered":"https:\/\/www.nationalluna.com\/us\/?p=2679"},"modified":"2020-03-25T16:06:59","modified_gmt":"2020-03-25T14:06:59","slug":"part-1-how-to-connect-a-solar-panel-to-a-dual-battery-system","status":"publish","type":"post","link":"https:\/\/www.nationalluna.com\/us\/battery-management\/part-1-how-to-connect-a-solar-panel-to-a-dual-battery-system\/","title":{"rendered":"PART 1: How to CONNECT a solar panel to a dual-battery system"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2691 alignright\" src=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2020\/03\/National-Luna-Green-Box-Solar-MPPT-01-300x205.png\" alt=\"\" width=\"300\" height=\"205\" srcset=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2020\/03\/National-Luna-Green-Box-Solar-MPPT-01-300x205.png 300w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2020\/03\/National-Luna-Green-Box-Solar-MPPT-01-768x525.png 768w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2020\/03\/National-Luna-Green-Box-Solar-MPPT-01-600x410.png 600w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2020\/03\/National-Luna-Green-Box-Solar-MPPT-01.png 900w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>Whether you\u2019re a weekend camper or long-haul overlander, there\u2019s no denying the convenience of a solar setup. Aside from having free energy to power your <a href=\"\/product-category\/camping-fridge\">camping fridge<\/a>, a solar panel can also be used to maintain your <a href=\"\/product-category\/battery-management\">auxiliary battery<\/a> for optimum service life.<\/p>\n<p>With this in mind, here\u2019s a basic guide on how to connect a solar panel to your <a href=\"\/product-category\/battery-management\">dual-battery system<\/a> or Portable Power Pack.<\/p>\n<h3><strong>WHAT DO YOU NEED?<\/strong><\/h3>\n<p>Simply put: A solar panel, a regulator, some <a href=\"\/product\/portable-power-pack-cable-set\">heavy-gauge cabling<\/a>, and of course, an auxiliary battery.<\/p>\n<p>Although solar panels may vary in cost and quality, what\u2019s just as important, is the regulator that goes with it. In short, the regulator is what converts the panel\u2019s high voltage into a voltage that\u2019s suitable for your battery; which means, the regulator must support your panel\u2019s current and voltage rating.<\/p>\n<p>Typically speaking, regulators are either MPPT or PWM in design. MPPT units are generally more costly, but noticeably more efficient in terms of how much energy they extract. PWM regulators may not be as efficient, but they are basic in function, reliable, and low cost.<\/p>\n<p>It should also be noted that some panels have built in regulators, so be sure to check this before you purchase your panel.<\/p>\n<h3><strong>INSTALLED DUAL BATTERY<\/strong><\/h3>\n<p>If your vehicle is equipped with an <a href=\"\/product-category\/battery-management\/installed-systems\">on-board \/ installed dual-battery system<\/a>, you simply connect the panel to the regulator, and the regulator to the terminals of your auxiliary battery.<\/p>\n<p>On that note, it\u2019s best to have your regulator as close to the battery as possible in order to limit voltage loss between the two. For this reason, it may be best to avoid panels with built-in regulators if you want the panel to be mobile and positioned away from your vehicle \u2013 resulting in a long cable and noticeable voltage loss.<\/p>\n<p>What\u2019s more, make sure you connect the regulator directly to the auxiliary battery, and not to your vehicle\u2019s main \/ cranking battery.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2385 size-full\" src=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447.jpeg\" alt=\"\" width=\"1280\" height=\"576\" srcset=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447.jpeg 1280w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447-300x135.jpeg 300w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447-1024x461.jpeg 1024w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447-768x346.jpeg 768w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2019\/11\/99fd6478-b801-4fdf-aa9d-615513078447-600x270.jpeg 600w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/p>\n<h3><strong>PORTABLE POWER PACK<\/strong><\/h3>\n<p>As far as <a href=\"\/product-category\/battery-management\/portable-systems\">Portable Power Packs<\/a> and <a href=\"\/product\/12v-auxiliary-battery-box\">Auxiliary Boxes<\/a> are concerned, the installation is even easier: simply connect the solar panel to the regulator, and the regulator to the <a href=\"\/product\/50-amp-coupler-grey\">50A grey coupler<\/a> on your power pack.<\/p>\n<p>On that note: National Luna recently launched a <a href=\"\/product\/power-pack-dc25\">DC-DC Portable Power Pack<\/a>, also known as <a href=\"\/product\/power-pack-dc25\">the Green Box<\/a>. This product is hugely versatile in that it features a <a href=\"\/product\/nldc-25-dual-battery-isolator-and-charger\">25A DC-DC dual-battery system<\/a>, a built-in MPPT solar regulator, and a multitude of output power points.<\/p>\n<p><a href=\"\/product\/power-pack-dc25\">The Green Box<\/a> makes the installation of a solar panel super straight forward because the MPPT is already built into the unit. All you have to do is plug your solar panel directly into the Green Box\u2019s solar input port, and the built-in DC-DC system takes care of the rest.<\/p>\n<p>The National Luna Green Box is a portable power solution, that doubles as a dual-battery system, as well as a mobile solar setup. Best of all, you can use it in your vehicle, your campsite, or even in your house during load shedding.<\/p>\n<h3><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-609 alignright\" src=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-300x300.jpg 300w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-150x150.jpg 150w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-768x768.jpg 768w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-600x600.jpg 600w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-100x100.jpg 100w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1-180x180.jpg 180w, https:\/\/www.nationalluna.com\/us\/wp-content\/uploads\/sites\/3\/2017\/11\/National-Luna-Portable-Power-Pack-Cable-Set-1.jpg 900w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>WHAT CABLE SHOULD YOU USE?<\/strong><\/h3>\n<p>Cabling is often the most overlooked subject when it comes to dual-battery systems and solar solutions. Ideally, we recommend nothing less than 16mm<sup>2<\/sup> cabling between batteries, and 6mm<sup>2<\/sup> from your solar panel to regulator.<\/p>\n<p>How bad can voltage loss be? Depending on its diameter, a light-duty cable may double your auxiliary battery\u2019s charging time, and in some cases, prevent the battery from fully recharging and fail as a result.<\/p>\n<p><em><strong>Next month, we\u2019ll look at what size solar panel you need to run your camping fridge.<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Whether you\u2019re a weekend camper or long-haul overlander, there\u2019s no denying the convenience of a solar setup. Aside from having free energy to power your camping fridge, a solar panel can also be used to maintain your auxiliary battery for optimum service life. With this in mind, here\u2019s a basic guide on how to connect &hellip;<\/p>\n","protected":false},"author":3,"featured_media":2686,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[39,73,59],"tags":[88,87,67,86],"class_list":["post-2679","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-battery-management","category-english-articles","category-media","tag-dual-battery","tag-green-box","tag-portable-power-pack","tag-solar"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PART 1: How to CONNECT a solar panel to a dual-battery system - National Luna - United States<\/title>\n<meta name=\"description\" content=\"Whether you\u2019re a weekend camper or long-haul overlander, there\u2019s no denying the convenience of a solar setup. 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