{"id":16686,"date":"2026-09-07T13:49:59","date_gmt":"2026-09-07T05:49:59","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&#038;p=16686"},"modified":"2026-09-16T13:57:37","modified_gmt":"2026-09-16T05:57:37","slug":"battery-backup-power-supply","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/","title":{"rendered":"Alimentation de secours de la batterie: comment \u00e7a marche et comment en choisir une"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Basculer<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#What_Is_a_Battery_Backup_Power_Supply\" >Qu 'est-ce qu' une alimentation de secours de batterie?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#How_Does_a_Battery_Backup_Power_Supply_Work\" >Comment fonctionne une alimentation de secours de batterie?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Normal_Operation_Mode\" >Mode de fonctionnement normal<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Backup_Mode_During_Power_Failure\" >Mode de sauvegarde pendant une panne de courant<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Automatic_Transfer_Process\" >Processus de transfert automatique<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Battery_Charging_and_Management\" >Charge et gestion de batterie<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Main_Components_of_a_Battery_Backup_Power_Supply\" >Les principaux composants d'une alimentation de secours de batterie<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Battery_Types\" >Batterie types<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Charger_and_BMS\" >Chargeur et BMS<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Power_Conversion_Circuit\" >Circuit de conversion de puissance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Control_and_Protection_System\" >Syst\u00e8me de contr\u00f4le et de protection<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Types_of_Battery_Backup_Power_Supplies\" >Types de batterie de sauvegarde Alimentation<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#UPS_Battery_Backup_Power_Supply\" >UPS Batterie de sauvegarde d'alimentation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#DC_Battery_Backup_Power_Supply\" >Batterie DC Backup Power Supply<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#AC-DC_Battery_Backup_Power_Supply\" >Batterie AC-DC Supply d'alimentation de secours<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Portable_Battery_Backup_Systems\" >Batterie portable Backup Systems<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#How_to_Choose_the_Right_Battery_Backup_Power_Supply\" >Comment choisir la bonne alimentation de secours de batterie<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_1_Determine_Your_Power_Requirements\" >\u00c9tape 1: D\u00e9terminez vos besoins en puissance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_2_Calculate_Required_Backup_Runtime\" >\u00c9tape 2: Calculer le temps de sauvegarde requis<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_3_Select_Battery_Capacity\" >\u00c9tape 3: S\u00e9lectionnez la capacit\u00e9 de la batterie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_4_Choose_Battery_Type\" >\u00c9tape 4: Choisir le type de batterie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_5_Consider_Output_Requirements\" >\u00c9tape 5: Consid\u00e9rez les exigences de sortie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_6_Verify_Charging_Voltage_Compatibility\" >\u00c9tape 6: V\u00e9rifier la compatibilit\u00e9 de tension de charge<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Step_7_Check_Protection_Features_OVPOCPOTPShort-Circuit_Protection\" >\u00c9tape 7: V\u00e9rifier les caract\u00e9ristiques de protection (OVP\/OCP\/OTP\/protection contre les courts-circuits)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Common_Applications_of_Battery_Backup_Power_Supplies\" >Applications courantes des alimentations de secours de batterie<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Industrial_Applications\" >Applications industrielles<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Security_Systems\" >Syst\u00e8mes de s\u00e9curit\u00e9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Medical_Equipment\" >\u00c9quipement m\u00e9dical<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Communication_Systems\" >Syst\u00e8mes de communication<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#LED_Lighting_Systems\" >Syst\u00e8mes d'\u00e9clairage LED<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Frequently_Asked_Questions\" >Questions fr\u00e9quemment pos\u00e9es<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#What_is_the_difference_between_UPS_and_battery_backup\" >Quelle est la diff\u00e9rence entre UPS et Battery Backup?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#How_does_a_battery_backup_power_supply_work\" >Comment fonctionne une alimentation de secours de batterie?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#How_long_can_a_battery_backup_power_supply_last\" >Combien de temps une batterie de secours peut-elle durer?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Why_does_charging_voltage_need_to_match_battery_type\" >Pourquoi la tension de charge doit correspondre au type de batterie?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#What_happens_if_a_battery_backup_power_supply_lacks_proper_protection_features\" >Que se passe-t-il si une alimentation de secours de batterie ne dispose pas de fonctions de protection appropri\u00e9es?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Conclusion\" >Conclusion<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/www.wehopower.com\/fr\/news\/battery-backup-power-supply\/#Related_Resources\" >Ressources connexes<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Lorsqu 'une armoire de commande perd l'alimentation \u00e9lectrique, m\u00eame pendant quelques secondes, le co\u00fbt appara\u00eet rapidement: un r\u00e9seau de s\u00e9curit\u00e9 tombe en panne, une ligne de production se bloque ou un n\u0153ud de communication tombe du r\u00e9seau. <strong>Batterie de backup d'alimentation<\/strong> se trouve entre votre charge et le r\u00e9seau de sorte que lorsque l'alimentation d'entr\u00e9e tombe en panne, votre \u00e9quipement continue \u00e0 fonctionner sur l'\u00e9nergie stock\u00e9e.Ce guide explique comment ces syst\u00e8mes fonctionnent, ce qu 'ils contiennent et les \u00e9tapes pratiques recommand\u00e9es par WEHO Power lors de la sp\u00e9cification d'un pour un d\u00e9ploiement industriel, de s\u00e9curit\u00e9, de communication ou d'\u00e9clairage LED.<\/p>\n<div style=\"border: 2px solid #DB261E; border-radius: 8px; padding: 20px 24px; margin: 28px 0; background: #FFF6F5;\">\n<p style=\"color: #db261e; margin: 0px 0px 8px; font-size: 20px; font-weight: bold; text-align: center;\">Besoin d'une batterie de secours de taille pour votre syst\u00e8me?<\/p>\n<p style=\"margin: 0px 0px 14px; color: #333333; text-align: center;\">WEHO Power fabrique des unit\u00e9s de secours de batterie de s\u00e9curit\u00e9 et d'onduleurs, des chargeurs de batterie et des modules d'alimentation intelligents avec des certifications ISO9001\/CE\/RoHS\/FCC\/CCC et un test de combustion \u00e0 pleine charge \u00e0 haute temp\u00e9rature 100% sur chaque unit\u00e9.<\/p>\n<p style=\"margin: 0px; text-align: center;\"><a style=\"display: inline-block; background: #DB261E; color: #ffffff; padding: 11px 22px; border-radius: 5px; text-decoration: none; font-weight: bold;\" href=\"https:\/\/www.wehopower.com\/fr\/contact\/\" target=\"_blank\" rel=\"noopener\">Demander un devis gratuit<\/a><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_a_Battery_Backup_Power_Supply\"><\/span>Qu 'est-ce qu' une alimentation de secours de batterie?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A <strong>Batterie de backup d'alimentation<\/strong> est un syst\u00e8me qui tire de l'\u00e9nergie du secteur AC ou DC pour faire fonctionner votre \u00e9quipement dans des conditions normales tout en gardant une batterie charg\u00e9e.D\u00e8s que la source primaire dispara\u00eet-une coupure de courant, un alimentateur d\u00e9fectueux ou une panne planifi\u00e9e-le syst\u00e8me passe \u00e0 l'\u00e9nergie de la batterie afin que la charge connect\u00e9e ne voit jamais l'interruption. Contrairement \u00e0 une batterie nue, c'est une batterie compl\u00e8te. <em>Syst\u00e8me de batterie Backup<\/em> qui comprend la charge, la conversion, le contr\u00f4le et la protection dans un seul package. <a href=\"https:\/\/www.wehopower.com\/fr\/product-category\/security-power-supply\/\" target=\"_blank\" rel=\"noopener\">Alimentation \u00e9lectrique de s\u00e9curit\u00e9 avec batterie de secours<\/a> La gamme est con\u00e7ue pour des installations non r\u00e9sidentielles toujours activ\u00e9es plut\u00f4t que pour une utilisation de bureau.<\/p>\n<figure id=\"attachment_17488\" aria-describedby=\"caption-attachment-17488\" style=\"width: 714px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.wehopower.com\/fr\/products\/\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-17488 size-full\" title=\"weho\u2011lrs\u2011enclosed\u2011switching\u2011power\u2011supply\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/weho\u2011lrs\u2011enclosed\u2011switching\u2011power\u2011supply.webp?quality=85&strip=all\" alt=\"WEHO DR series DIN rail switching power supply installed for industrial cabinet power distribution\" width=\"714\" height=\"500\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/weho\u2011lrs\u2011enclosed\u2011switching\u2011power\u2011supply.webp?quality=85&strip=all 714w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/weho\u2011lrs\u2011enclosed\u2011switching\u2011power\u2011supply-300x210.webp?quality=85&strip=all 300w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/weho\u2011lrs\u2011enclosed\u2011switching\u2011power\u2011supply-18x12.webp?quality=85&strip=all 18w\" sizes=\"(max-width: 714px) 100vw, 714px\" \/><\/a><figcaption id=\"caption-attachment-17488\" class=\"wp-caption-text\">\u00a0<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"How_Does_a_Battery_Backup_Power_Supply_Work\"><\/span>Comment fonctionne une alimentation de secours de batterie?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>La compr\u00e9hension de la s\u00e9quence de fonctionnement est la premi\u00e8re \u00e9tape pour choisir la bonne unit\u00e9. Le comportement se divise en quatre phases.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Normal_Operation_Mode\"><\/span>Mode de fonctionnement normal<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Dans des conditions d'utilisation normales, la <strong>Backup Power Supply<\/strong> takes the incoming AC (or DC) source, regulates it for the load, and diverts a portion of available power to the charger so the battery stays topped up. The load is powered entirely from the mains, and the battery is held in a float or cycle-ready state.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Backup_Mode_During_Power_Failure\"><\/span>Mode de sauvegarde pendant une panne de courant<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When input power fails, the system draws stored energy from the battery and feeds it through the conversion stage to the load. Because the transition is handled internally, downstream equipment keeps running without a manual restart. This is the defining feature buyers care about: seamless continuity measured in minutes or hours rather than seconds.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Automatic_Transfer_Process\"><\/span>Processus de transfert automatique<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The handoff between mains and battery is managed by an automatic transfer function. A control circuit continuously monitors the input; the moment voltage drops below a set threshold, it disconnects the mains path and connects the battery path. When mains returns and stabilizes, the system transfers back and resumes charging. A well-designed <strong>UPS battery backup<\/strong> does this with no perceptible gap to the load.<!-- replace src with WordPress Media Library URL after upload --><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Battery_Charging_and_Management\"><\/span>Charge et gestion de batterie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The charger keeps the battery healthy through staged charging (bulk, absorption, float) and the management stage watches cell or bank voltage, temperature, and current. Good management extends service life and prevents the deep discharge that quietly destroys backup capacity over time. WEHO applies a 100% high-temperature full-load burn-in test, so the charging and management logic is exercised under stress before a unit ships.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Main_Components_of_a_Battery_Backup_Power_Supply\"><\/span>Les principaux composants d'une alimentation de secours de batterie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Behind every reliable <strong>DC battery backup power supply<\/strong> are four building blocks. Knowing them helps you evaluate a vendor&#8217;s claims instead of trusting a datasheet.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Battery_Types\"><\/span>Batterie types<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sealed lead-acid (SLA) remains common for cost-sensitive, stationary cabinets, while lithium (LiFePO4) is increasingly chosen where weight, cycle life, and depth-of-discharge matter. The chemistry you choose drives the runtime, footprint, and replacement interval of the whole system.<\/p>\n<p><!-- replace src with WordPress Media Library URL after upload --><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Charger_and_BMS\"><\/span>Chargeur et BMS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The charger refills the bank and the battery management stage protects it. WEHO&#8217;s <a href=\"https:\/\/www.wehopower.com\/fr\/product_category\/security-power-supply\/sc-series-for-battery-charger-power-supply\/\" target=\"_blank\" rel=\"noopener\">SC series battery charger<\/a> is built specifically for this role, delivering stable charge current and the protection logic a backup bank needs.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Power_Conversion_Circuit\"><\/span>Circuit de conversion de puissance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Depending on the design, you get a DC-DC stage (battery voltage to a regulated output) or an inverter stage (battery DC to AC). The conversion circuit sets output quality \u2014 voltage regulation, ripple, and, where AC is required, waveform type.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Control_and_Protection_System\"><\/span>Syst\u00e8me de contr\u00f4le et de protection<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Sensing, transfer logic, and protection live here. Over-voltage, over-current, over-temperature, and short-circuit protection keep a fault in the battery or load from taking down the wider system. WEHO integrates this intelligence into its <a href=\"https:\/\/www.wehopower.com\/fr\/product-category\/power-module\/\" target=\"_blank\" rel=\"noopener\">intelligent power module<\/a> family for smarter monitoring and control.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Battery_Backup_Power_Supplies\"><\/span>Types de batterie de sauvegarde Alimentation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Backup systems are not one-size-fits-all. The main categories map to how the output is delivered.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"UPS_Battery_Backup_Power_Supply\"><\/span>UPS Batterie de sauvegarde d'alimentation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A UPS provides instantaneous, seamless backup and is the reference point for any &#8220;UPS vs battery backup difference&#8221; discussion. WEHO&#8217;s <a href=\"https:\/\/www.wehopower.com\/fr\/product_category\/security-power-supply\/ad-series-ups-power-supply\/\" target=\"_blank\" rel=\"noopener\">AD series UPS power supply<\/a> targets security and industrial control loads that cannot tolerate a flicker.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"DC_Battery_Backup_Power_Supply\"><\/span>Batterie DC Backup Power Supply<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A <strong>DC battery backup power supply<\/strong> outputs regulated DC directly \u2014 ideal for 12V\/24V\/48V control circuits, panels, and telecom gear that already runs on DC and does not need an inversion stage.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"AC-DC_Battery_Backup_Power_Supply\"><\/span>Batterie AC-DC Supply d'alimentation de secours<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>When the protected load is AC, the battery DC is inverted to a clean AC output. This is the right choice for equipment with AC inputs inside a cabinet or small machine.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Portable_Battery_Backup_Systems\"><\/span>Batterie portable Backup Systems<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Wheeled or rack-packaged units serve temporary commissioning, field service, or event infrastructure where the backup must move with the team. They trade permanent cabinet mounting for mobility while keeping the same charging and protection fundamentals.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_Choose_the_Right_Battery_Backup_Power_Supply\"><\/span>Comment choisir la bonne alimentation de secours de batterie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>WEHO&#8217;s application engineers use a consistent checklist with B2B buyers. Follow these seven steps to avoid the two most common failures: under-sized runtime and mismatched output type.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_1_Determine_Your_Power_Requirements\"><\/span>\u00c9tape 1: D\u00e9terminez vos besoins en puissance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Write down each device the backup must support, with its operating voltage and wattage. Include the steady load and any inrush or startup surge.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_2_Calculate_Required_Backup_Runtime\"><\/span>\u00c9tape 2: Calculer le temps de sauvegarde requis<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Decide how long the system must survive on battery \u2014 minutes for a graceful shutdown, or hours for an unattended site. Runtime drives battery capacity more than wattage does.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_3_Select_Battery_Capacity\"><\/span>\u00c9tape 3: S\u00e9lectionnez la capacit\u00e9 de la batterie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Translate your wattage and runtime target into ampere-hours at the battery voltage. Use the estimator below: Capacity (Ah) \u00d7 Voltage (V) \u00f7 Load (W) \u2248 Runtime (hours). Round up and confirm the chemistry fits your space and temperature envelope.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_4_Choose_Battery_Type\"><\/span>\u00c9tape 4: Choisir le type de batterie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pick SLA for low cost and stationary use, or LiFePO4 where cycle life, weight, and usable depth-of-discharge matter. The choice affects replacement interval and cabinet footprint.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_5_Consider_Output_Requirements\"><\/span>\u00c9tape 5: Consid\u00e9rez les exigences de sortie<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>If your equipment is DC, choose a DC battery backup. If it is AC, choose an AC-DC or UPS type. Matching output type removes an unnecessary conversion loss.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_6_Verify_Charging_Voltage_Compatibility\"><\/span>\u00c9tape 6: V\u00e9rifier la compatibilit\u00e9 de tension de charge<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Confirm the charger&#8217;s output profile matches the battery chemistry and cell count. A lead-acid profile applied to lithium, or the wrong cell count, will undercharge or damage the bank \u2014 charging voltage must track the battery type exactly.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Step_7_Check_Protection_Features_OVPOCPOTPShort-Circuit_Protection\"><\/span>\u00c9tape 7: V\u00e9rifier les caract\u00e9ristiques de protection (OVP\/OCP\/OTP\/protection contre les courts-circuits)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Confirm over-voltage, over-current, over-temperature, and short-circuit protection are present and certified for your environment. For security and industrial sites this is non-negotiable, and WEHO units carry ISO9001\/CE\/RoHS\/FCC\/CCC marks plus a 100% high-temperature full-load burn-in test.<\/p>\n<p><strong>Battery Runtime Estimator<\/strong><\/p>\n<table style=\"border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 14px;\">\n<thead>\n<tr style=\"background: #DB261E; color: #ffffff;\">\n<th style=\"border: 1px solid #cccccc; padding: 8px 10px; text-align: left;\">Capacity (Ah)<\/th>\n<th style=\"border: 1px solid #cccccc; padding: 8px 10px; text-align: left;\">Battery Voltage (V)<\/th>\n<th style=\"border: 1px solid #cccccc; padding: 8px 10px; text-align: left;\">Load (W)<\/th>\n<th style=\"border: 1px solid #cccccc; padding: 8px 10px; text-align: left;\">Estimated Runtime (h)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">7<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">12<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">50<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">\u2248 1.7<\/td>\n<\/tr>\n<tr style=\"background: #FFF6F5;\">\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">17<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">12<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">50<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">\u2248 4.1<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">12<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">24<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">120<\/td>\n<td style=\"border: 1px solid #cccccc; padding: 8px 10px;\">\u2248 2.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin: 14px 0; color: #555555; font-size: 13px;\">Formula: Capacity (Ah) \u00d7 Voltage (V) \u00f7 Load (W) \u2248 Runtime (hours). Real-world runtime is lower due to conversion losses and battery age \u2014 apply a 0.7\u20130.85 efficiency factor. A live runtime calculator plugin would let buyers enter their own values interactively; we recommend adding one to this post.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Common_Applications_of_Battery_Backup_Power_Supplies\"><\/span>Applications courantes des alimentations de secours de batterie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>WEHO designs backup power for several application groups.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Industrial_Applications\"><\/span>Applications industrielles<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Factory control cabinets, PLC racks, and process controllers rely on a <strong>Syst\u00e8me de batterie Backup<\/strong> to ride through brief outages and prevent corrupted sequences or unplanned downtime on the line.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Security_Systems\"><\/span>Syst\u00e8mes de s\u00e9curit\u00e9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For <a href=\"https:\/\/www.wehopower.com\/fr\/product-category\/security-power-supply\/\" target=\"_blank\" rel=\"noopener\">Alimentation \u00e9lectrique de s\u00e9curit\u00e9 avec batterie de secours<\/a>, continuity is a safety requirement: cameras, access controllers, and alarm panels must stay live during a power cut. This is the clearest case of <strong>battery backup for security systems<\/strong> \u2014 a dark site is a vulnerable site.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Medical_Equipment\"><\/span>\u00c9quipement m\u00e9dical<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Medical environments \u2014 clinics, hospitals, and life-support-adjacent facilities \u2014 clearly need backup power, and in those settings the equipment must meet medical safety standards such as IEC 60601 to protect patients and operators from leakage current and fault hazards. WEHO&#8217;s standard battery backup units are engineered for Industrial, Security, Communication, and LED applications and are <strong>NOT certified to IEC 60601<\/strong> or other medical safety standards. For a true medical project, specify equipment that is explicitly medical-grade certified (IEC 60601 plus the relevant regional marks); do not substitute a general-purpose industrial backup unit. If your system feeds a non-clinical support circuit \u2014 such as a building&#8217;s security or communication backbone serving a medical facility \u2014 our standard backup units apply, but the clinical loads themselves must use certified medical-grade power.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Communication_Systems\"><\/span>Syst\u00e8mes de communication<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Telecom nodes, fiber hutches, and remote radio equipment use DC battery backup to hold the network up through grid failures.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"LED_Lighting_Systems\"><\/span>Syst\u00e8mes d'\u00e9clairage LED<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Emergency and signage LED lighting benefits from a dedicated DC backup stage so egress and safety illumination remains on when the main feed drops. A DC-coupled stage avoids an unnecessary AC inversion.<\/p>\n<div style=\"border: 2px solid #DB261E; border-radius: 8px; padding: 20px 24px; margin: 28px 0; background: #FFF6F5;\">\n<p style=\"color: #db261e; margin: 0px 0px 8px; font-size: 20px; font-weight: bold; text-align: center;\">Specify your backup power with WEHO<\/p>\n<p style=\"margin: 0px 0px 14px; color: #333333; text-align: center;\">From the AD series UPS to SC series chargers and intelligent power modules, WEHO supports OEM\/ODM with 1000+ models and full-load burn-in testing. Send your load list and runtime target and we will size the system.<\/p>\n<p style=\"margin: 0px; text-align: center;\"><a style=\"display: inline-block; background: #DB261E; color: #ffffff; padding: 11px 22px; border-radius: 5px; text-decoration: none; font-weight: bold;\" href=\"https:\/\/www.wehopower.com\/fr\/contact\/\" target=\"_blank\" rel=\"noopener\">Demander un devis gratuit<\/a><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Questions fr\u00e9quemment pos\u00e9es<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_UPS_and_battery_backup\"><\/span>Quelle est la diff\u00e9rence entre UPS et Battery Backup?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A UPS is a specific type of battery backup built for seamless, instant transfer with no gap to the load. &#8220;Battery backup&#8221; is the broader category that also includes DC and portable systems that may have a brief or load-specific handoff.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_does_a_battery_backup_power_supply_work\"><\/span>Comment fonctionne une alimentation de secours de batterie?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It powers the load from the mains while charging a battery. When input power fails, an automatic transfer switches the load to the battery, and a conversion circuit delivers the correct output voltage until mains returns or the battery is depleted.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"How_long_can_a_battery_backup_power_supply_last\"><\/span>Combien de temps une batterie de secours peut-elle durer?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Runtime depends on battery capacity, voltage, and load wattage \u2014 roughly Capacity (Ah) \u00d7 Voltage (V) \u00f7 Load (W) hours before losses. Service life is a separate question driven by chemistry and management: LiFePO4 delivers far more cycles than SLA. A unit sized with headroom and proper charging will meet its rated runtime for years.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Why_does_charging_voltage_need_to_match_battery_type\"><\/span>Pourquoi la tension de charge doit correspondre au type de batterie?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Lead-acid and lithium chemistries require different charge profiles and cell voltages. Applying the wrong charging voltage undercharges the bank or damages it, shortening runtime and creating a safety risk.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"What_happens_if_a_battery_backup_power_supply_lacks_proper_protection_features\"><\/span>Que se passe-t-il si une alimentation de secours de batterie ne dispose pas de fonctions de protection appropri\u00e9es?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Without over-voltage, over-current, over-temperature, and short-circuit protection, a fault in the battery or load can cascade and take down the wider system or start a thermal event. Protection features are what let a backup unit fail safely instead of becoming the cause of the next outage.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Un fiable <strong>Batterie de backup d'alimentation<\/strong> is less a product than an insurance policy for uptime. By understanding how it works, what components matter, and how to size runtime against your real load, you can specify a system that simply does its job when the grid does not. WEHO Power brings manufacturer-level expertise to the task: ISO9001\/CE\/RoHS\/FCC\/CCC certifications, a 100% high-temperature full-load burn-in test on every unit, 1000+ models, and OEM\/ODM support across our security, UPS, charger, and intelligent power module lines. Send us your load list and runtime target and we will help you choose the right unit.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Related_Resources\"><\/span>Ressources connexes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/www.wehopower.com\/fr\/product-category\/security-power-supply\/\" target=\"_blank\" rel=\"noopener\">Security Power Supply (battery backup, UPS, chargers)<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>A manufacturer&#8217;s guide to the Battery Backup Power Supply \u2014 how it works (normal operation, backup mode, automatic transfer, battery charging &#038; management), its main components, the common types (UPS \/ DC \/ AC-DC \/ portable), a practical 7-step selection process with a Battery Runtime Estimator widget, and real-world Industrial, Security, Medical-context, Communication, and LED Lighting applications. Written for US B2B buyers who need dependable non-residential backup power.<\/p>","protected":false},"author":4,"featured_media":17775,"parent":0,"menu_order":102,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149,148],"class_list":["post-16686","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","news_category-industry-news","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news\/16686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/comments?post=16686"}],"version-history":[{"count":4,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news\/16686\/revisions"}],"predecessor-version":[{"id":17776,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news\/16686\/revisions\/17776"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/media\/17775"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/media?parent=16686"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/fr\/wp-json\/wp\/v2\/news_category?post=16686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}