{"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\/fa\/news\/battery-backup-power-supply\/","title":{"rendered":"Battery Backup Power Supply: How It Works and How to Choose One"},"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\">\u0641\u0647\u0631\u0633\u062a \u0645\u0637\u0627\u0644\u0628<\/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;\">\u062a\u063a\u06cc\u06cc\u0631 \u0648\u0636\u0639\u06cc\u062a \u062f\u0647\u06cc\u062f<\/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\/fa\/news\/battery-backup-power-supply\/#Introduction\" >\u0645\u0642\u062f\u0645\u0647<\/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\/fa\/news\/battery-backup-power-supply\/#What_Is_a_Battery_Backup_Power_Supply\" >What Is a Battery Backup Power Supply?<\/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\/fa\/news\/battery-backup-power-supply\/#How_Does_a_Battery_Backup_Power_Supply_Work\" >How Does a Battery Backup Power Supply Work?<\/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\/fa\/news\/battery-backup-power-supply\/#Normal_Operation_Mode\" >Normal Operation Mode<\/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\/fa\/news\/battery-backup-power-supply\/#Backup_Mode_During_Power_Failure\" >Backup Mode During Power Failure<\/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\/fa\/news\/battery-backup-power-supply\/#Automatic_Transfer_Process\" >Automatic Transfer Process<\/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\/fa\/news\/battery-backup-power-supply\/#Battery_Charging_and_Management\" >Battery Charging and Management<\/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\/fa\/news\/battery-backup-power-supply\/#Main_Components_of_a_Battery_Backup_Power_Supply\" >Main Components of a Battery Backup Power Supply<\/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\/fa\/news\/battery-backup-power-supply\/#Battery_Types\" >Battery 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\/fa\/news\/battery-backup-power-supply\/#Charger_and_BMS\" >Charger and 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\/fa\/news\/battery-backup-power-supply\/#Power_Conversion_Circuit\" >Power Conversion Circuit<\/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\/fa\/news\/battery-backup-power-supply\/#Control_and_Protection_System\" >Control and Protection System<\/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\/fa\/news\/battery-backup-power-supply\/#Types_of_Battery_Backup_Power_Supplies\" >Types of Battery Backup Power Supplies<\/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\/fa\/news\/battery-backup-power-supply\/#UPS_Battery_Backup_Power_Supply\" >UPS Battery Backup Power Supply<\/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\/fa\/news\/battery-backup-power-supply\/#DC_Battery_Backup_Power_Supply\" >DC Battery 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\/fa\/news\/battery-backup-power-supply\/#AC-DC_Battery_Backup_Power_Supply\" >AC-DC Battery Backup Power Supply<\/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\/fa\/news\/battery-backup-power-supply\/#Portable_Battery_Backup_Systems\" >Portable Battery 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\/fa\/news\/battery-backup-power-supply\/#How_to_Choose_the_Right_Battery_Backup_Power_Supply\" >How to Choose the Right Battery Backup Power Supply<\/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\/fa\/news\/battery-backup-power-supply\/#Step_1_Determine_Your_Power_Requirements\" >Step 1: Determine Your Power Requirements<\/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\/fa\/news\/battery-backup-power-supply\/#Step_2_Calculate_Required_Backup_Runtime\" >Step 2: Calculate Required Backup Runtime<\/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\/fa\/news\/battery-backup-power-supply\/#Step_3_Select_Battery_Capacity\" >Step 3: Select Battery Capacity<\/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\/fa\/news\/battery-backup-power-supply\/#Step_4_Choose_Battery_Type\" >Step 4: Choose Battery Type<\/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\/fa\/news\/battery-backup-power-supply\/#Step_5_Consider_Output_Requirements\" >Step 5: Consider Output Requirements<\/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\/fa\/news\/battery-backup-power-supply\/#Step_6_Verify_Charging_Voltage_Compatibility\" >Step 6: Verify Charging Voltage Compatibility<\/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\/fa\/news\/battery-backup-power-supply\/#Step_7_Check_Protection_Features_OVPOCPOTPShort-Circuit_Protection\" >Step 7: Check Protection Features (OVP\/OCP\/OTP\/Short-Circuit Protection)<\/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\/fa\/news\/battery-backup-power-supply\/#Common_Applications_of_Battery_Backup_Power_Supplies\" >Common Applications of Battery Backup Power Supplies<\/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\/fa\/news\/battery-backup-power-supply\/#Industrial_Applications\" >\u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc \u0635\u0646\u0639\u062a\u06cc<\/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\/fa\/news\/battery-backup-power-supply\/#Security_Systems\" >Security Systems<\/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\/fa\/news\/battery-backup-power-supply\/#Medical_Equipment\" >\u062a\u062c\u0647\u06cc\u0632\u0627\u062a \u067e\u0632\u0634\u06a9\u06cc<\/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\/fa\/news\/battery-backup-power-supply\/#Communication_Systems\" >Communication Systems<\/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\/fa\/news\/battery-backup-power-supply\/#LED_Lighting_Systems\" >LED Lighting Systems<\/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\/fa\/news\/battery-backup-power-supply\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/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\/fa\/news\/battery-backup-power-supply\/#What_is_the_difference_between_UPS_and_battery_backup\" >What is the difference between UPS and 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\/fa\/news\/battery-backup-power-supply\/#How_does_a_battery_backup_power_supply_work\" >How does a battery backup power supply work?<\/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\/fa\/news\/battery-backup-power-supply\/#How_long_can_a_battery_backup_power_supply_last\" >How long can a battery backup power supply last?<\/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\/fa\/news\/battery-backup-power-supply\/#Why_does_charging_voltage_need_to_match_battery_type\" >Why does charging voltage need to match battery type?<\/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\/fa\/news\/battery-backup-power-supply\/#What_happens_if_a_battery_backup_power_supply_lacks_proper_protection_features\" >What happens if a battery backup power supply lacks proper protection features?<\/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\/fa\/news\/battery-backup-power-supply\/#Conclusion\" >\u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<\/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\/fa\/news\/battery-backup-power-supply\/#Related_Resources\" >Related Resources<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>\u0645\u0642\u062f\u0645\u0647<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When a control cabinet loses utility power for even a few seconds, the cost shows up fast: a security network goes dark, a production line stalls, or a communications node drops off the network. A <strong>Battery Backup Power Supply<\/strong> sits between your load and the grid so that the moment input power fails, your equipment keeps running on stored energy. This guide explains how these systems work, what is inside them, and the practical steps WEHO Power recommends when specifying one for an industrial, security, communication, or LED lighting deployment.<\/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;\">Need a battery backup supply sized for your system?<\/p>\n<p style=\"margin: 0px 0px 14px; color: #333333; text-align: center;\">WEHO Power builds security and UPS battery backup units, battery chargers, and intelligent power modules with ISO9001\/CE\/RoHS\/FCC\/CCC certifications and a 100% high-temperature full-load burn-in test on every unit.<\/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\/fa\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Free Quote<\/a><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_a_Battery_Backup_Power_Supply\"><\/span>What Is a Battery Backup Power Supply?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A <strong>Battery Backup Power Supply<\/strong> is a system that draws energy from the AC or DC mains to run your equipment in normal conditions while keeping a battery bank charged. The instant the primary source disappears \u2014 a brownout, a faulted feeder, or a planned outage \u2014 the system switches to battery energy so the connected load never sees the interruption. Unlike a bare battery, it is a complete <em>Battery Backup System<\/em> that includes charging, conversion, control, and protection in one package. WEHO&#8217;s <a href=\"https:\/\/www.wehopower.com\/fa\/product-category\/security-power-supply\/\" target=\"_blank\" rel=\"noopener\">security power supply with battery backup<\/a> lineup is engineered for always-on, non-residential installations rather than consumer desktop use.<\/p>\n<figure id=\"attachment_17488\" aria-describedby=\"caption-attachment-17488\" style=\"width: 714px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.wehopower.com\/fa\/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>How Does a Battery Backup Power Supply Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Understanding the operating sequence is the first step to choosing the right unit. The behavior splits into four phases.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Normal_Operation_Mode\"><\/span>Normal Operation Mode<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Under normal utility conditions the <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>Backup Mode During Power Failure<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>Automatic Transfer Process<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>Battery Charging and Management<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>Main Components of a Battery Backup Power Supply<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>Battery 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>Charger and 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\/fa\/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>Power Conversion Circuit<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>Control and Protection System<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\/fa\/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 of Battery Backup Power Supplies<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 Battery Backup Power Supply<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\/fa\/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>DC Battery 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>AC-DC Battery Backup Power Supply<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>Portable Battery 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>How to Choose the Right Battery Backup Power Supply<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>Step 1: Determine Your Power Requirements<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>Step 2: Calculate Required Backup Runtime<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>Step 3: Select Battery Capacity<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>Step 4: Choose Battery Type<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>Step 5: Consider Output Requirements<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>Step 6: Verify Charging Voltage Compatibility<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>Step 7: Check Protection Features (OVP\/OCP\/OTP\/Short-Circuit Protection)<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>Common Applications of Battery Backup Power Supplies<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>\u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc \u0635\u0646\u0639\u062a\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Factory control cabinets, PLC racks, and process controllers rely on a <strong>Battery Backup System<\/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>Security Systems<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For <a href=\"https:\/\/www.wehopower.com\/fa\/product-category\/security-power-supply\/\" target=\"_blank\" rel=\"noopener\">security power supply with battery backup<\/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>\u062a\u062c\u0647\u06cc\u0632\u0627\u062a \u067e\u0632\u0634\u06a9\u06cc<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>Communication Systems<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>LED Lighting Systems<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\/fa\/contact\/\" target=\"_blank\" rel=\"noopener\">Request a Free Quote<\/a><\/p>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<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>What is the difference between UPS and 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>How does a battery backup power supply work?<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>How long can a battery backup power supply last?<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>Why does charging voltage need to match battery type?<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>What happens if a battery backup power supply lacks proper protection features?<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>\u0646\u062a\u06cc\u062c\u0647 \u06af\u06cc\u0631\u06cc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A reliable <strong>Battery Backup Power Supply<\/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>Related Resources<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/www.wehopower.com\/fa\/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\/fa\/wp-json\/wp\/v2\/news\/16686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/comments?post=16686"}],"version-history":[{"count":4,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/16686\/revisions"}],"predecessor-version":[{"id":17776,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news\/16686\/revisions\/17776"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media\/17775"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/media?parent=16686"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/fa\/wp-json\/wp\/v2\/news_category?post=16686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}