{"id":20474,"date":"2025-07-11T13:36:38","date_gmt":"2025-07-11T18:36:38","guid":{"rendered":"https:\/\/www.storage.com\/blog\/?p=20474"},"modified":"2026-05-05T15:02:07","modified_gmt":"2026-05-05T20:02:07","slug":"what-is-battery-tender-vehicle-storage","status":"publish","type":"post","link":"https:\/\/www.storage.com\/blog\/what-is-battery-tender-vehicle-storage\/","title":{"rendered":"What Is a Battery Tender? A Complete Guide for Vehicle Storage"},"content":{"rendered":"<div class=\"mb-[56px] lg:mb-[64px] p-6 lg:p-8 rounded-[4px] shadow-standard text-dark-grey\">\r\n    <h5 class=\"mb-4 h4 font-bold capitalize\">Article takeaways<\/h5>\r\n    <ul class=\"flex flex-col gap-4 lg:ml-4\">\r\n        <li>\r\n    <span class=\"flex gap-2 p font-semibold\">\r\n        <svg class=\"w-[10px] h-2 mx-[5px] text-blue flex-shrink-0 translate-y-2\"><use href=\"#icon-double-arrow\"><\/use><\/svg>\r\n        Battery tenders are useful slow-charging devices that provide a car battery with just enough power to keep it from losing a charge.\r\n<\/span>\r\n<\/li><li>\r\n    <span class=\"flex gap-2 p font-semibold\">\r\n        <svg class=\"w-[10px] h-2 mx-[5px] text-blue flex-shrink-0 translate-y-2\"><use href=\"#icon-double-arrow\"><\/use><\/svg>\r\n        A battery tender is essential when keeping a vehicle in long-term storage, as vehicle batteries lose power over time.\r\n<\/span>\r\n<\/li><li>\r\n    <span class=\"flex gap-2 p font-semibold\">\r\n        <svg class=\"w-[10px] h-2 mx-[5px] text-blue flex-shrink-0 translate-y-2\"><use href=\"#icon-double-arrow\"><\/use><\/svg>\r\n        From solar-powered chargers to multi-bank options, there are plenty of battery tender options available to meet your needs.\r\n<\/span>\r\n<\/li>\r\n    <\/ul>\r\n<\/div> \n\n\n<p>If you\u2019re planning on <a href=\"https:\/\/www.storage.com\/blog\/the-complete-guide-to-vehicle-storage\/\">putting a vehicle in storage for a long time<\/a>, you\u2019ve probably considered the risk of returning to your unit only to find your car battery dead. This is a reasonable worry\u2013if a car isn\u2019t used for an extended period, the battery can drain and might need an expensive replacement. To prevent this, many vehicle owners will spend a little extra on a battery tender, a device that provides just enough power to the car battery to keep it from completely draining over time.<\/p>\n\n\n\n<p>In this article, we\u2019ll go over what a battery tender can do, why it\u2019s an important tool for your storage kit, and how to choose the right one for your needs.<\/p>\n\n\n\n<h2 id=\"what-is-a-battery-tender\" class=\"wp-block-heading\" id=\"h-what-is-a-battery-tender\">What is a battery tender?<\/h2>\n\n\n\n<p>A battery tender, also known as a battery maintainer or trickle charger, is a device that can very slowly recharge a car or vehicle battery to prevent it from draining completely. Car batteries are traditionally charged through the car\u2019s alternator during regular driving and lose a small percentage of their charge per day if not used, and despite <a href=\"https:\/\/www.storage.com\/blog\/the-benefits-of-auto-storage\/\">the benefits of long-term auto storage<\/a>, that percentage adds up over time.&nbsp;<\/p>\n\n\n\n<p>Battery tenders provide a charge at approximately the rate a battery discharges, keeping the level steady over time as long as the device is powered\u2013some battery tenders also feature smart technology, automatically adjusting the charging rate to the rate the battery is losing power. These devices can charge vehicles of all sizes, <a href=\"https:\/\/www.storage.com\/blog\/motorcycle-storage-cost\/\">from motorcycles<\/a> to <a href=\"https:\/\/www.storage.com\/blog\/sports-car-storage\/\">sports cars<\/a> to <a href=\"https:\/\/www.storage.com\/blog\/boat-storage-guide\/\">boats<\/a>.<\/p>\n\n\n\n<p>Battery tenders differ from other battery chargers in the amount of power they provide to the battery. A standard car battery charger provides enough power to fully recharge over a short time, while battery tenders provide just enough power to keep the battery from losing a charge.<\/p>\n\n\n\n<h2 id=\"what-options-should-i-look-for-when-shopping-for-a-battery-tender\" class=\"wp-block-heading\" id=\"h-what-options-should-i-look-for-when-shopping-for-a-battery-tender\">What options should I look for when shopping for a battery tender?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-basic-vs-smart-battery-maintainers\">Basic vs. smart battery maintainers<\/h3>\n\n\n\n<p>The most basic and least expensive battery tenders available will simply provide a steady charge to a car battery as long as they\u2019re connected. However, if you\u2019re willing to pay a little extra, it may be worth investing in a smart battery tender, which can automatically adjust its rate of charge based on how fast your battery loses power. These smart tenders also feature safety shutoffs that won\u2019t provide power if the device is connected backward, which can be extremely dangerous.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-solar-battery-tenders\">Solar battery tenders<\/h3>\n\n\n\n<p>Most trickle chargers need to be powered using a wall outlet, but a solar-powered battery tender can maintain a charge by simply being exposed to sunlight. These typically cost a bit more than plug-in chargers, but if your vehicle is being stored outdoors, this can save you time and money recharging the device. If you\u2019re storing your vehicle indoors, look into <a href=\"https:\/\/www.storage.com\/blog\/storage-units-with-electricity\/\">units with electricity and outlets<\/a> so you can plug your tender in.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-multi-bank-options\">Multi-bank options<\/h3>\n\n\n\n<p>If you\u2019re storing multiple vehicles, it may be worth investing in a multi-bank battery tender to keep multiple batteries maintained with a single device. High-end battery tenders with multiple charging banks will even allow you to provide different voltages to different vehicles at the same time.<\/p>\n\n\n\n<h2 id=\"why-should-i-consider-investing-in-a-battery-tender\" class=\"wp-block-heading\" id=\"h-why-should-i-consider-investing-in-a-battery-tender\">Why should I consider investing in a battery tender?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1600\" height=\"1000\" src=\"https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12.png\" alt=\"Graphics with 3 reasons to consider a battery tender for long term vehicle storage\" class=\"wp-image-20479\" srcset=\"https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12.png 1600w, https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12-488x305.png 488w, https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12-480x300.png 480w, https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12-768x480.png 768w, https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/Blog-Visuals-SDC-12-1536x960.png 1536w\" sizes=\"auto, (max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n\n\n<p>Everyday vehicle owners and car enthusiasts alike should consider investing in a battery tender, especially for storage purposes. Let\u2019s go over a few benefits of using one.<\/p>\n\n\n\n<ul class=\"wp-block-list ul1\">\n<li class=\"li3\"><strong>They can extend the life of your car battery.<\/strong> It\u2019s best practice to replace a battery the first time you find it dead, even if you can jumpstart it. Using a battery tender will ensure your battery still has a charge and will last much longer.<\/li>\n\n\n\n<li><strong>They can save you money in the long run.<\/strong> Replacing a battery is expensive, and jumpstarting one runs the risk of damaging your vehicle\u2019s electrical systems. Keeping a battery charged with a trickle charger eliminates this risk.<\/li>\n\n\n\n<li><strong>They can maintain multiple vehicle types.<\/strong> From <a href=\"https:\/\/www.storage.com\/blog\/dirt-bike-storage-guide\/\">dirt bikes<\/a> and <a href=\"https:\/\/www.storage.com\/blog\/diy-atv-storage-maintenance-checklist\/\">ATVs<\/a> to vans, SUVs, trucks, and even boats, using the right trickle charger will ensure your vehicle is ready to drive right out of storage.<\/li>\n<\/ul>\n\n\n\n<p>Certain situations will require a battery tender more than others. If you put a vehicle away for a season or two, such as an off-road vehicle you only drive during the summer, you should use a trickle charger to make sure the battery is ready to go when you unload the vehicle. Classic cars with less robust electrical systems can also benefit from a battery charger, as they tend to leak more power over time.<\/p>\n\n\n\n<h2 id=\"how-do-i-choose-the-right-battery-tender-for-my-needs\" class=\"wp-block-heading\" id=\"h-how-do-i-choose-the-right-battery-tender-for-my-needs\">How do I choose the right battery tender for my needs?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-selection-criteria\">Selection criteria<\/h3>\n\n\n\n<p>The first thing to look for when shopping for a battery tender is whether the device you\u2019re looking at is compatible with your vehicle\u2019s battery type. Modern trickle chargers are usually equally compatible with lead-acid, AGM, and gel batteries, but it\u2019s worth researching to make sure you don\u2019t buy a charger that won\u2019t properly charge the type of battery you\u2019re working with.<\/p>\n\n\n\n<p>You also need to make sure the charger you buy is capable of charging the right voltage and delivering the right amperage\u2013most cars require a 12V battery and 1.25 amps of power. Additional useful features include an automatic switch to shut off the charger when the battery is full or the weather conditions get too high, as well as automatic short detection so the charger doesn\u2019t work if you connect the clips to the battery the wrong way.<\/p>\n\n\n\n<p>Different trickle chargers will charge differently depending on what you buy. Some chargers have an option to work as a standard charger, providing enough power to bring the battery to a full charge. Others will simply maintain the level of charge the battery had when you first plugged it in. Compare your options and choose the one that best meets your needs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-proper-usage\">Proper usage<\/h3>\n\n\n\n<p>Once you\u2019ve got your charger and your vehicle is in a storage unit with an outlet, open the hood of your vehicle (or wherever your battery is stored) and attach the red charger clamp to the positive battery terminal, then attach the black clamp to the negative terminal. Finally, plug the charger into the wall outlet, and it will begin providing power to the battery.<\/p>\n\n\n\n<p>Always remember to attach the charging clamps as directed, with the red clamp to the positive terminal first, and don\u2019t plug the charger into the wall until it\u2019s connected. Attaching the clamps backward runs the risk of a fire (something you\u2019ll avoid if the charger has an automatic shut-off feature), and plugging the charger in first runs the risk of shorting the battery or causing sparks, which can deliver dangerous shocks.<\/p>\n\n\n\n<h2 id=\"battery-tenders-in-brief\" class=\"wp-block-heading\" id=\"h-battery-tenders-in-brief\">Battery tenders in brief<\/h2>\n\n\n\n<p>If you\u2019re going to be storing a vehicle for any length of time, it\u2019s worth looking into battery tenders so you can <a href=\"https:\/\/www.storage.com\/blog\/protecting-batteries-in-self-storage-during-the-winter\/\">protect and extend the life of your vehicle battery<\/a>. Keep a look out for storage facilities with power routed to their units, or if you\u2019re using a solar charger, look into outdoor vehicle storage with plenty of sunlight. If set up properly, your vehicle will be ready to go with a charged battery right out of the unit.<\/p>\n\n\n\n<p>Looking for <a href=\"https:\/\/www.storage.com\/car-storage\/\">the right unit to store a vehicle of any size<\/a>? Want to know how to find units with outlets? <a href=\"http:\/\/storage.com\">Storage.com<\/a> can help! Use our search tool to compare self-storage facilities near you, and check out our blog to learn about<a href=\"https:\/\/www.storage.com\/blog\/storage-units-with-electricity\/\"> the right way to find facilities with powered units\u2013and why they often don\u2019t advertise them<\/a>.<\/p>\n\n\n\n<p>Want to learn more about vehicle storage? <a href=\"https:\/\/www.storage.com\/blog\/how-to-store-tire\/\">Check out our article on proper tire storage.<\/a><\/p>\n\n\n        <div class=\"mt-[56px] lg:mt-[64px]\" id=\"article-faq\">\r\n          <h2 id=\"faqs\" class=\"h2 font-bold text-dark-grey\">FAQs<\/h2>\r\n          <div class=\"mt-4 border-b border-light-grey border-solid\">\r\n                        <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                Is there any difference between a battery tender, a battery maintainer, and a trickle charger?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  A battery tender often refers to both battery maintainers and trickle chargers. However, a battery maintainer often has more advanced features than a trickle charger, such as automatic charge rate adjustment, to better maintain the life of a car battery while it\u2019s plugged in.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>            <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                Should I disconnect my car battery for storage or use a battery tender?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  A battery tender will be much more helpful than just disconnecting your car battery, as the battery will lose charge over time whether it\u2019s connected or not.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>            <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                How long can I leave a battery tender connected?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  You can usually leave a battery tender connected to a car battery for extended periods, especially if it has an automatic shut-off feature. However, it\u2019s best to check in on such a charger every once in a while to make sure there aren\u2019t any issues.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>            <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                Do I need a battery tender if I start my car regularly during storage?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  Depending on the rate you start your car, a car battery will still lose a charge over time, and starting a car in a storage unit runs the risk of dangerous fumes being trapped in the unit. A battery tender is an inexpensive alternative that will protect your battery for much longer.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>            <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                Will a battery tender work in cold weather?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  Yes, but you should be careful\u2013some battery tenders don\u2019t have weatherproofing, meaning they aren\u2019t safe to use in colder temperatures. You also need to make sure the battery hasn\u2019t been frozen or sustained any damage from the cold before charging it.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>            <div class=\"js-accordion-item py-6 border-t border-solid border-light-grey\">\r\n              <button class=\"js-accordion-btn flex justify-between w-full text-left gap-4 p--large font-bold text-dark-grey\" aria-expanded=\"false\">\r\n                Can I use the same battery tender for different types of vehicles?\r\n                <svg class=\"w-6 h-6 flex-shrink-0 text-grey [.is-open_&#038;]:rotate-[180deg] transition-transform duration-300 ease-in-out\"><use href=\"#icon-chevron-down\"><\/use><\/svg>\r\n              <\/button>\r\n              <div class=\"js-accordion-content max-h-0 overflow-hidden [.is-open_&#038;]:max-h-[9999px] transition-[max-height] duration-300 ease-in-out\">\r\n                <div class=\"pt-6\">\r\n                  Yes\u2013battery tenders are suitable for cars, motorcycles, boats, ATVs, and any other vehicle with a battery.\r\n                <\/div>\r\n              <\/div>\r\n            <\/div>\r\n          <\/div>\r\n        <\/div> ","protected":false},"excerpt":{"rendered":"<p>To prevent a car battery from dying, many vehicle owners will spend a little extra on a battery tender, a device that provides just enough power to the car battery to keep it from completely draining over time.<\/p>\n","protected":false},"author":100,"featured_media":20475,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1163],"tags":[],"class_list":["post-20474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recreational-storage"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What Is a Battery Tender? A Complete Guide for Vehicle Storage What Is a Battery Tender? Complete Guide for Vehicle Storage | Storage.com<\/title>\n<meta name=\"description\" content=\"Learn what a battery tender is and why it&#039;s essential for vehicle storage. Our complete guide covers types, benefits, and how to choose the right battery maintainer for your stored car or motorcycle.\" \/>\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.storage.com\/blog\/what-is-battery-tender-vehicle-storage\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is a Battery Tender? A Complete Guide for Vehicle Storage\" \/>\n<meta property=\"og:description\" content=\"To prevent a car battery from dying, many vehicle owners will spend a little extra on a battery tender, a device that provides just enough power to the car battery to keep it from completely draining over time.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.storage.com\/blog\/what-is-battery-tender-vehicle-storage\/\" \/>\n<meta property=\"og:site_name\" content=\"Storage Talk\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SelfStorageMarketplace\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-11T18:36:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-05T20:02:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.storage.com\/blog\/wp-content\/uploads\/2025\/07\/shutterstock_2439682155-scaled-e1752258456267.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1852\" \/>\n\t<meta property=\"og:image:height\" content=\"1698\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Peter Lalush\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@storagecom\" \/>\n<meta name=\"twitter:site\" content=\"@storagecom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Peter Lalush\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":[\"Article\",\"BlogPosting\"],\"@id\":\"https:\/\/www.storage.com\/blog\/what-is-battery-tender-vehicle-storage\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.storage.com\/blog\/what-is-battery-tender-vehicle-storage\/\"},\"author\":{\"name\":\"Peter Lalush\",\"@id\":\"https:\/\/www.storage.com\/blog\/#\/schema\/person\/b07b4fc942be21b4ae96a13a8190c95f\"},\"headline\":\"What Is a Battery Tender? 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