{"id":4170,"date":"2026-01-06T08:29:31","date_gmt":"2026-01-06T07:29:31","guid":{"rendered":"https:\/\/www.batteriedeportable.com\/guides-et-conseils\/how-to-choose-right-battery-laptop\/"},"modified":"2026-01-06T08:29:31","modified_gmt":"2026-01-06T07:29:31","slug":"how-to-choose-right-battery-laptop","status":"publish","type":"post","link":"https:\/\/www.batterylaptop.co.uk\/guides\/how-to-choose-right-battery-laptop\/","title":{"rendered":"How to choose the right battery for your laptop: our tips"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The battery is an essential component of any mobile computer. It is the source of the freedom of movement we all need in today\u2019s world. So how can you buy a new battery quickly and easily, without getting bogged down in complicated research?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Typing \u00ab\u00a0<a href=\"https:\/\/www.batterylaptop.co.uk\/battery\/laptop.html\" target=\"_blank\" rel=\"noopener noreferrer\">laptop battery<\/a>\u00a0\u00bb into a search engine returns more than 3 million results. That is a huge amount of information. While having many options is a good thing, it can also create real uncertainty. <\/span><b>How do you know exactly what you should buy, who you can trust, and which specifications matter most when choosing?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Nine key points should be checked: the battery part number, the laptop manufacturer, the PC model reference, the capacity, the voltage, the number of cells, the price, the warranty period and the delivery conditions.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Identifying the part: original information<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">The most reliable way to identify the correct battery is to use the part number from the original battery. <\/span><b>This unique code is the only information you absolutely need to be sure you are ordering the right battery for your machine<\/b><span style=\"font-weight: 400;\">. The code is printed on the battery and is made up of a series of numbers and letters.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Examples of part numbers: AS10D41, J1KND, A1322 or PA3534-1BRS.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If the original battery is no longer available, you can search using your laptop details. Enter the brand (e.g. Dell), the model (e.g. Inspiron) and the series (e.g. 1545).<\/span><\/p>\n<div style=\"padding: 80% 0 0 0; position: relative;\"> <iframe src=\"https:\/\/player.vimeo.com\/video\/1147659332?autoplay=1&amp;loop=1\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture\" allowfullscreen> <\/iframe> <\/div>\n<h3><span style=\"font-weight: 400;\">Power specifications: capacity and voltage<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Battery capacity determines how much energy it can store. A higher capacity means longer use before you have to plug into the mains.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Capacity is measured in amperes, most often expressed in watt-hours (Wh) or milliampere-hours (mAh). <\/span><b>Note that a total of 1000 mAh is equal to 1 Ah<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Your choice should be guided by how you use your laptop. If your PC consumes a lot of power and you often use it on the move under heavy load, choose the highest capacity available. <\/span><b>If, on the other hand, you mainly work at a desk, a standard capacity will be more than enough<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Voltage is another essential technical factor. More than 90% of laptops use voltages from 7.2 V to 14.8 V. The exact voltage is always shown on the original battery.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A very small difference, for example between 10.8 V and 11.1 V, is considered acceptable. However, <\/span><b>you should never try to swap batteries whose voltages are very different, such as 7.2 V and 14.8 V<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Manufacturing and commercial criteria<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">The number of cells is important. First, more cells increase the capacity. Second, <\/span><b>batteries with more cells are inevitably heavier<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Standard batteries usually have 3, 4 or 6 cells. For extended battery life, you can choose 9- or 12-cell batteries, if available, bearing in mind the impact on both price and weight.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The last key point is the warranty. The supplier should give you at least one year of cover. They should also guarantee that the capacity stated on the label matches the actual capacity. <\/span><b>A maximum difference of 2 to 3% is considered acceptable<\/b><span style=\"font-weight: 400;\">. For example, for a 4400 mAh battery, the real capacity should not drop below 4300 mAh.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Buying online from BatteryLaptop<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Go to our website and enter the part number of your old battery in the search box.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you do not have the part number, you can search by your laptop manufacturer and model.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can also use the site navigation by selecting brand, model and series step by step. If you have any difficulty, our customer service team is here to help!<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The battery is an essential component of any mobile computer. It is the source of the freedom of movement we all need in today\u2019s world. So how can you buy a new battery quickly and easily, without getting bogged down&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[122],"tags":[],"class_list":["post-4170","post","type-post","status-publish","format-standard","hentry","category-battery"],"_links":{"self":[{"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/posts\/4170","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/comments?post=4170"}],"version-history":[{"count":0,"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/posts\/4170\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/media?parent=4170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/categories?post=4170"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.batterylaptop.co.uk\/guides\/wp-json\/wp\/v2\/tags?post=4170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}