{"id":87877,"date":"2026-05-19T02:54:08","date_gmt":"2026-05-19T02:54:08","guid":{"rendered":"https:\/\/buvmateriali.com\/product\/akumulators-3104aa-20v-4-0ah-en"},"modified":"2026-05-19T02:55:12","modified_gmt":"2026-05-19T02:55:12","slug":"battery-3104aa-20v-4-0ah","status":"publish","type":"product","link":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah","title":{"rendered":"BATTERY 3104AA 20V 4.0AH"},"content":{"rendered":"<p><strong>SKIL 3104AA BATTERY, 18 V, LI-ION, 4000 MAH<br \/><\/strong><\/p>\n<div style=\"text-align: justify\">In 2020, SKIL introduced the latest line of corded and battery power tools to the market &#8211; <strong>SKIL RED Line.<\/p>\n<p><\/strong><\/div>\n<div style=\"text-align: justify\">SKIL RED Line features high-quality power tools designed and manufactured using the latest technologies.<\/div>\n<p><\/p>\n<div style=\"text-align: justify\">They come with a very long, 3-year manufacturer&#8217;s warranty, while for battery-powered tools equipped with the latest generation brushless DC motor, the manufacturer &#8211; SKIL &#8211; provides a 5-year warranty.<\/div>\n<p>Additionally, SKIL offers a 3-year warranty on all <strong>RED Line<\/strong> lithium-ion batteries.<\/p>\n<p>ATTENTION!!!<\/p>\n<div style=\"text-align: justify\">The warranty is provided based on the purchase invoice, and registration on the manufacturer&#8217;s website is not required.<\/div>\n<p>20V 4.0Ah lithium-ion battery KEEP COOL SKIL EAN (GTIN) 8719643002181<br \/>SKIL ENERGY PLATFORM 20V<\/p>\n<p>Any tool. any job. And just one battery.<\/p>\n<p>It is a flexible battery power system for SKIL RED Line electric tools.<\/p>\n<div style=\"text-align: justify\">Batteries and chargers are designed to work with all ENERGY PLATFORM 20 V battery electric tools, whether they come with or without batteries.<\/p>\n<\/div>\n<div style=\"text-align: justify\">This allows for the free expansion of the range of battery power tools in the workshop, additionally, beyond the typical battery power tools, SKIL offers a very wide range of garden power tools.<\/p>\n<\/div>\n<div style=\"text-align: justify\">Thanks to this solution, one or two batteries, one mains charger, and a wide range of power tools are sufficient, which will be further enriched each year with increasingly interesting SKIL offerings.<\/div>\n<p>20V 4.0Ah lithium-ion battery <strong>KEEP COOL SKIL <\/strong>Manufacturer code BR1E3104AA<\/p>\n<div style=\"text-align: justify\">Lithium-ion technology &#8211; no memory effect, meaning the battery can be charged at any time regardless of whether the energy reserve is depleted by 50% or 90%.<\/p>\n<\/div>\n<div style=\"text-align: justify\">A slight self-discharge rate after 30 days of non-use still exceeds 96% of nominal capacity, whereas NiCd\/NiMH batteries can lose up to 25% of capacity, meaning after about 4 months traditional batteries self-discharge, but the BOSCH lithium-ion battery will maintain more than 85% of its capacity.<\/div>\n<p>20V 4.0Ah lithium-ion battery KEEP COOL SKIL Brand Skil<\/p>\n<div style=\"text-align: justify\">The latest 20V MAX (18V) lithium-ion battery line.<\/div>\n<p><strong>SKIL KEEP COOL <\/strong>technology is designed to seal the individual cells even tighter and dissipate heat more effectively.<\/p>\n<div style=\"text-align: justify\">This technology has extended the battery&#8217;s runtime by 25% in a single charging cycle and doubled its lifespan.<\/div>\n<p><\/p>\n<div style=\"text-align: justify\"><strong>SKIL<\/strong>&#8216;s patented heat absorption technology prevents battery overheating, enhancing its performance and longevity.<\/div>\n<p><\/p>\n<div style=\"text-align: justify\">Copper-made cell connectors ensure lower resistance and prevent energy losses. Additionally, copper dissipates heat faster, protecting the cells from overheating.<\/div>\n<p><\/p>\n<div style=\"text-align: justify\">The casing made from durable plastic protects the battery from any mechanical damage, ensuring the battery retains full efficiency and functionality even after a drop from a height of 3 meters onto concrete.<\/div>\n<p>20 V 4.0 Ah lithium-ion battery KEEP COOL SKIL 20V Max series (18 V) energy platform<\/p>\n<div style=\"text-align: justify\">Built-in ACTIVCELL system &#8211; electronic battery energy management system: this system is offered in all battery tools and SKIL RED LINE batteries. It monitors the battery cells using an integrated processor chip that protects the battery and tool from damage.<\/p>\n<\/div>\n<div style=\"text-align: justify\">This system optimizes the battery energy consumption and controls the device&#8217;s output power and rotation speed, while also reducing them in the following cases:<\/div>\n<p><\/p>\n<ul>\n<li><span data-contrast=\"auto\">Tool overload<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/li>\n<li><span data-contrast=\"auto\">Battery deep discharge<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/li>\n<li><span data-contrast=\"auto\">Motor overheating<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/li>\n<li><span data-contrast=\"auto\">Too high battery temperature<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335551550&quot;:0,&quot;335551620&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify\"><span data-contrast=\"auto\">The above criteria can cause damage to the battery cells and significantly reduce their lifespan, which is why SKIL, by offering the <strong>ACTIVCELL<\/strong> system in cordless power tools and batteries, provides users with very long and worry-free operation for both the tools and the lithium-ion batteries.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\"> <\/span><\/p>\n<p><\/p>\n<div style=\"text-align: justify\">This system guarantees optimal interaction between the tool and the battery, ensuring the best performance.<\/div>\n<p>20 V 4.0 Ah lithium-ion battery KEEP COOL SKIL Battery capacity 4 Ah<\/p>\n<div style=\"text-align: justify\">The battery charging LED indicator consists of 4 very readable green LEDs, which inform the user about the current battery charging status and remaining energy reserve.<\/div>\n<p>Thanks to the built-in switch, the user can check at any time whether the battery needs recharging or if they can complete the intended task.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SKIL 3104AA BATTERY, 18 V, LI-ION, 4000 MAH In 2020, SKIL introduced the latest line of corded and battery power tools to the market &#8211; SKIL RED Line. SKIL RED Line features high-quality power tools designed and manufactured using the latest technologies. They come with a very long, 3-year manufacturer&#8217;s warranty, while for battery-powered tools &#8230; <a title=\"BATTERY 3104AA 20V 4.0AH\" class=\"read-more\" href=\"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\" aria-label=\"Read more about BATTERY 3104AA 20V 4.0AH\">Read more<\/a><\/p>\n","protected":false},"featured_media":26164,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[10925],"product_tag":[],"class_list":["post-87877","product","type-product","status-publish","has-post-thumbnail","product_cat-batteries-instrument-batteries-and-their-accessories","first","instock","shipping-taxable","purchasable","product-type-simple","add-to-wishlist-before_image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BATTERY 3104AA 20V 4.0AH | Buvmix<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"BATTERY 3104AA 20V 4.0AH | Buvmix\" \/>\n<meta property=\"og:description\" content=\"SKIL 3104AA BATTERY, 18 V, LI-ION, 4000 MAH In 2020, SKIL introduced the latest line of corded and battery power tools to the market &#8211; SKIL RED Line. SKIL RED Line features high-quality power tools designed and manufactured using the latest technologies. They come with a very long, 3-year manufacturer&#8217;s warranty, while for battery-powered tools ... Read more\" \/>\n<meta property=\"og:site_name\" content=\"Buvmix\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-19T02:55:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/buvmateriali.com\/wp-content\/uploads\/2026\/04\/346301bbf42c20cb1954a0cd5763a81a.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1191\" \/>\n\t<meta property=\"og:image:height\" content=\"842\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/\",\"url\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/\",\"name\":\"BATTERY 3104AA 20V 4.0AH | Buvmix\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/buvmateriali.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/346301bbf42c20cb1954a0cd5763a81a.webp\",\"datePublished\":\"2026-05-19T02:54:08+00:00\",\"dateModified\":\"2026-05-19T02:55:12+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/#primaryimage\",\"url\":\"https:\\\/\\\/buvmateriali.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/346301bbf42c20cb1954a0cd5763a81a.webp\",\"contentUrl\":\"https:\\\/\\\/buvmateriali.com\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/346301bbf42c20cb1954a0cd5763a81a.webp\",\"width\":1191,\"height\":842},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/product\\\/battery-3104aa-20v-4-0ah\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/buvmateriali.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Veikals\",\"item\":\"https:\\\/\\\/buvmateriali.com\\\/veikals\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"BATTERY 3104AA 20V 4.0AH\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/\",\"name\":\"Buvmix\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#organization\",\"name\":\"Buvmix\",\"url\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/buvmateriali.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/cropped-logo-1-1.webp\",\"contentUrl\":\"https:\\\/\\\/buvmateriali.com\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/cropped-logo-1-1.webp\",\"width\":186,\"height\":52,\"caption\":\"Buvmix\"},\"image\":{\"@id\":\"https:\\\/\\\/buvmateriali.com\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"BATTERY 3104AA 20V 4.0AH | Buvmix","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"og_locale":"en_US","og_type":"article","og_title":"BATTERY 3104AA 20V 4.0AH | Buvmix","og_description":"SKIL 3104AA BATTERY, 18 V, LI-ION, 4000 MAH In 2020, SKIL introduced the latest line of corded and battery power tools to the market &#8211; SKIL RED Line. SKIL RED Line features high-quality power tools designed and manufactured using the latest technologies. They come with a very long, 3-year manufacturer&#8217;s warranty, while for battery-powered tools ... Read more","og_site_name":"Buvmix","article_modified_time":"2026-05-19T02:55:12+00:00","og_image":[{"width":1191,"height":842,"url":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2026\/04\/346301bbf42c20cb1954a0cd5763a81a.webp","type":"image\/webp"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/","url":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/","name":"BATTERY 3104AA 20V 4.0AH | Buvmix","isPartOf":{"@id":"https:\/\/buvmateriali.com\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/#primaryimage"},"image":{"@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/#primaryimage"},"thumbnailUrl":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2026\/04\/346301bbf42c20cb1954a0cd5763a81a.webp","datePublished":"2026-05-19T02:54:08+00:00","dateModified":"2026-05-19T02:55:12+00:00","breadcrumb":{"@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/#primaryimage","url":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2026\/04\/346301bbf42c20cb1954a0cd5763a81a.webp","contentUrl":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2026\/04\/346301bbf42c20cb1954a0cd5763a81a.webp","width":1191,"height":842},{"@type":"BreadcrumbList","@id":"https:\/\/buvmateriali.com\/en\/product\/battery-3104aa-20v-4-0ah\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/buvmateriali.com\/"},{"@type":"ListItem","position":2,"name":"Veikals","item":"https:\/\/buvmateriali.com\/veikals\/"},{"@type":"ListItem","position":3,"name":"BATTERY 3104AA 20V 4.0AH"}]},{"@type":"WebSite","@id":"https:\/\/buvmateriali.com\/en\/#website","url":"https:\/\/buvmateriali.com\/en\/","name":"Buvmix","description":"","publisher":{"@id":"https:\/\/buvmateriali.com\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/buvmateriali.com\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/buvmateriali.com\/en\/#organization","name":"Buvmix","url":"https:\/\/buvmateriali.com\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/buvmateriali.com\/en\/#\/schema\/logo\/image\/","url":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2025\/12\/cropped-logo-1-1.webp","contentUrl":"https:\/\/buvmateriali.com\/wp-content\/uploads\/2025\/12\/cropped-logo-1-1.webp","width":186,"height":52,"caption":"Buvmix"},"image":{"@id":"https:\/\/buvmateriali.com\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/product\/87877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/comments?post=87877"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/media\/26164"}],"wp:attachment":[{"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/media?parent=87877"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/product_brand?post=87877"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/product_cat?post=87877"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/buvmateriali.com\/wp-json\/wp\/v2\/product_tag?post=87877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}