{"id":19575,"date":"2026-10-19T11:45:09","date_gmt":"2026-10-19T03:45:09","guid":{"rendered":"https:\/\/www.wehopower.com\/news\/power-supply-hold-up-time-vs-dc-ups\/"},"modified":"2026-10-19T12:24:02","modified_gmt":"2026-10-19T04:24:02","slug":"power-supply-hold-up-time-vs-dc-ups","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/","title":{"rendered":"Power-Supply Hold-Up Time vs. a DC UPS: Define the Backup Task"},"content":{"rendered":"<div class=\"weho-blog-content\" id=\"weho-article-14\" data-weho-article-id=\"14\">\n<p class=\"direct-answer\">Power-supply hold-up time is the interval that stored energy keeps the output within a defined voltage limit after input power is lost, under stated conditions. A DC UPS adds a managed energy-storage path for a specified continuity objective. Choose between the existing supply, a buffer module, and a DC UPS from the interruption duration, load timeline, minimum valid voltage, and recovery requirement. Begin with the event at the load terminals: a brief mains dip, a controlled shutdown, or continued operation until input returns.<\/p>\n<figure class=\"scene-hero\" id=\"application-scene-14\"><a href=\"https:\/\/www.wehopower.com\/el\/product\/ups-120w-ac-to-dc-single-output-power-supply-for-battery-charge\/\" aria-label=\"View WEHO SC-120 series product details\" title=\"SC-120 series product details\" data-weho-link-kind=\"product_detail\" data-weho-link-role=\"product_image\" data-weho-model=\"SC-120 series\" class=\"weho-product-image-link\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/14-scene-960.webp?quality=85&#038;strip=all 960w, https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/14-scene.webp?quality=85&#038;strip=all 1672w\" sizes=\"(max-width:760px) calc(100vw - 36px), 760px\"><img fetchpriority=\"high\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/14-scene.webp?quality=85&#038;strip=all\" width=\"1672\" height=\"941\" alt=\"Power-Supply Hold-Up Time vs. a DC UPS: Define the Backup Task  title=\" loading=\"eager\" decoding=\"async\" power-supply hold-up time a dc ups: define the backup task title =\"\"><\/picture><\/a><figcaption>AI-assisted application illustration, not an installed or tested UPS. The SC-120-series appearance reference and disconnected battery illustrate the planning task; no transfer performance or runtime is shown.<span class=\"weho-image-actions\" data-weho-image-actions=\"1\"><span class=\"weho-image-hint\">SC-120 series \u00b7 Select image for product details.<\/span><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/14-scene.png\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-role=\"view_original\">View larger image \u2197<\/a><\/span><\/figcaption><\/figure>\n<details class=\"article-toc\" open>\n<summary>\u03a0\u03af\u03bd\u03b1\u03ba\u03b1\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b5\u03c7\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/summary>\n<nav class=\"toc-links\" aria-label=\"Article sections\"><a href=\"#three-continuity-questions\">Separate hold-up, transfer, and backup duration<\/a><a href=\"#define-load-timeline\">Write the interruption as a load timeline<\/a><a href=\"#compare-continuity-options\">Choose storage from the service requirement<\/a><a href=\"#battery-and-recharge\">Check usable runtime and readiness separately<\/a><a href=\"#weho-document-review\">Review the exact WEHO backup product boundary<\/a><a href=\"#continuity-validation\">Validate the complete event and recovery<\/a><\/nav>\n<\/details>\n<section id=\"three-continuity-questions\">\n<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\">\u03a0\u03af\u03bd\u03b1\u03ba\u03b1\u03c2 \u03c0\u03b5\u03c1\u03b9\u03b5\u03c7\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/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;\">\u039c\u03c0\u03b1\u03c1\u03ad\u03c4\u03b1<\/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\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Separate_hold-up_transfer_and_backup_duration\" >Separate hold-up, transfer, and backup duration<\/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\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Write_the_interruption_as_a_load_timeline\" >Write the interruption as a load timeline<\/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\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Choose_storage_from_the_service_requirement\" >Choose storage from the service requirement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.wehopower.com\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Check_usable_runtime_and_readiness_separately\" >Check usable runtime and readiness separately<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.wehopower.com\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Review_the_exact_WEHO_backup_product_boundary\" >Review the exact WEHO backup product boundary<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.wehopower.com\/el\/news\/power-supply-hold-up-time-vs-dc-ups\/#Validate_the_complete_event_and_recovery\" >Validate the complete event and recovery<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Separate_hold-up_transfer_and_backup_duration\"><\/span>Separate hold-up, transfer, and backup duration<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A control cabinet can have three different timing requirements. First, its AC-DC supply may need to bridge a short input interruption. Second, a storage module may have to take over without the DC load crossing its minimum input voltage. Third, the stored energy may have to support the equipment until input returns or a shutdown completes.<\/p>\n<div class=\"weho-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Scrollable comparison table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Question<\/th>\n<th scope=\"col\">Relevant boundary<\/th>\n<th scope=\"col\">Evidence needed<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>How long does the supply bridge input loss?<\/td>\n<td>Defined input-loss event to output-voltage endpoint<\/td>\n<td>Minimum or typical hold-up value, input, load, temperature, and endpoint definition<\/td>\n<\/tr>\n<tr>\n<td>Does the load survive takeover?<\/td>\n<td>Voltage at the specified load terminals during the transition<\/td>\n<td>Transfer behavior with actual wiring, load dynamics, and device tolerances<\/td>\n<\/tr>\n<tr>\n<td>How long can storage support the load?<\/td>\n<td>Storage-ready state to the required end of service<\/td>\n<td>Usable storage capacity, discharge limit, load profile, conversion losses, temperature, and aging condition<\/td>\n<\/tr>\n<tr>\n<td>When is another event covered?<\/td>\n<td>Recovery of the required energy reserve<\/td>\n<td>Recharge behavior, source capacity, and readiness criteria<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>A hold-up figure needs its load, input condition, voltage endpoint, and typical or guaranteed status. For a published example of that reporting format, see <a href=\"https:\/\/products.pulspower.com\/mwdownloads\/download\/link\/id\/1827\" target=\"_blank\" rel=\"noopener noreferrer\">the external power-supply datasheet, revision 1.4, section 7<\/a>. Compare the stated test point with the equipment requirement.<\/p>\n<p>For a detailed method focused on the existing supply, use the <a href=\"https:\/\/www.wehopower.com\/el\/news\/power-supply-hold-up-time-test\/\" data-weho-link-kind=\"guide\">WEHO hold-up-time test guide<\/a>. Here, the next task is choosing the continuity architecture after the load and event are defined.<\/p>\n<\/section>\n<section id=\"define-load-timeline\">\n<h2><span class=\"ez-toc-section\" id=\"Write_the_interruption_as_a_load_timeline\"><\/span>Write the interruption as a load timeline<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u201cKeep the controller alive\u201d is incomplete. Decide whether communications, I\/O, valves, brakes, storage writes, and restart logic must also remain active. A device that remains energized can still lose its intended function if another required part resets.<\/p>\n<p>For a hypothetical 24 V control system, assume the full critical load consumes 72 W during the first 2 seconds of input loss. The machine then sheds nonessential loads and needs 24 W for another 18 seconds to finish a controlled shutdown. These figures are design assumptions, not measured WEHO results. The required continuity interval is 20 seconds.<\/p>\n<figure class=\"batch-figure\" id=\"guide-figure-14\"><picture><source media=\"(max-width:640px)\" type=\"image\/webp\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/guide-14-mobile.webp\" width=\"380\" height=\"749\"><source media=\"(max-width:640px)\" type=\"image\/png\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/guide-14-mobile.png\" width=\"380\" height=\"749\"><source type=\"image\/webp\" srcset=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/guide-14-desktop.webp\"><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/guide-14-desktop.png?quality=85&#038;strip=all\" width=\"2240\" height=\"1508\" alt=\"Power-Supply Hold-Up Time vs. a DC UPS: Define the Backup Task  title=\" decoding=\"async\" power-supply hold-up time a dc ups: define the backup task title =\"\"><\/picture><figcaption>Hypothetical energy timeline: 72 W for 2 s followed by 24 W for 18 s gives 576 J at the load. At an assumed 90% storage-path efficiency, the event needs 640 J from storage before reserve and aging allowances. This is not a product runtime claim.<\/figcaption><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/guide-14-desktop.png\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"relation-detail\">View full diagram<\/a><\/figure>\n<p class=\"formula\">Required load energy = (72 W \u00d7 2 s) + (24 W \u00d7 18 s) = 576 J = 0.160 Wh<\/p>\n<p>At an assumed constant 24 V, the two stages correspond to 3 A and 1 A. If the DC bus changes in storage mode and the loads behave approximately as constant-power loads, calculate current at the lowest permitted bus voltage instead. At 21.6 V, the 72 W stage would draw about 3.33 A before distribution losses.<\/p>\n<p>Use a shorter event to see the architecture boundary: a project may require riding through a 50\u2013200 ms interruption without shutdown, while this example needs a full 20 s shutdown sequence. Those are example requirements, not product-duration bands. Compare each event with the supply&#8217;s documented hold-up at the actual load; if it falls short, evaluate a buffer or DC UPS and test the takeover voltage at the load.<\/p>\n<\/section>\n<section id=\"compare-continuity-options\">\n<h2><span class=\"ez-toc-section\" id=\"Choose_storage_from_the_service_requirement\"><\/span>Choose storage from the service requirement<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"weho-table-wrap\" tabindex=\"0\" role=\"region\" aria-label=\"Scrollable comparison table\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Option<\/th>\n<th scope=\"col\">Useful reason to evaluate it<\/th>\n<th scope=\"col\">Decision that still needs evidence<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Existing supply hold-up<\/td>\n<td>Its documented and validated performance may cover the complete required brief event<\/td>\n<td>Does the load-terminal voltage stay valid at every required operating point?<\/td>\n<\/tr>\n<tr>\n<td>Capacitor buffer<\/td>\n<td>Short, frequent events or a defined brief shutdown task<\/td>\n<td>Usable energy over the voltage window, peak current, recharge time, and environmental limits<\/td>\n<\/tr>\n<tr>\n<td>Battery-backed DC UPS<\/td>\n<td>A longer continuity interval or service objective that needs managed battery storage<\/td>\n<td>Compatible battery, discharge curves, temperature, aging, cutoff, charging, and maintenance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The time scale helps shortlist an architecture. Internal AC-DC hold-up commonly addresses events measured in tens of milliseconds. Electrolytic-capacitor buffers extend short-event support into milliseconds or seconds, while larger supercapacitor systems can support longer shutdown tasks. Battery UPS systems are worth evaluating for sustained operation measured in minutes or hours. These ranges overlap as load changes: select from the candidate&#8217;s current, energy, voltage, and recharge curves. The <a href=\"https:\/\/www.pulspower.com\/ca\/blog\/capacitor-based-buffer-modules-fast-reliable-bridging-for-short-term-dc-power-interruptions\/\" target=\"_blank\" rel=\"noopener noreferrer\">referenced explanation of capacitor buffering<\/a> and its <a href=\"https:\/\/www.pulspower.com\/ca\/blog\/dc-ups-modules-with-battery-or-capacitor\/\" target=\"_blank\" rel=\"noopener noreferrer\">battery-versus-capacitor comparison<\/a> illustrate the distinction. A stated hold-up time alone does not establish compliance with a voltage-dip standard.<\/p>\n<p>For the hypothetical 576 J load requirement, assume 90% efficiency through the selected storage-to-load path. Storage must then deliver 576 J \u00f7 0.90 = 640 J, or about 0.178 Wh. This is the energy demand for the stated event; it excludes any additional reserve, aging allowance, standby consumption, or repeated-event requirement.<\/p>\n<p>For an ideal capacitor comparison only, usable energy is E = \u00bdC(V<sub>high<\/sub>\u00b2 \u2212 V<sub>low<\/sub>\u00b2). An assumed 28 V to 22 V storage window and 640 J would require C = 2 \u00d7 640 \u00f7 (28\u00b2 \u2212 22\u00b2) \u2248 4.27 F. Use this ideal value to compare energy scale, then select a rated module from its permitted voltage window, topology, capacitance tolerance, series resistance, current limits, and temperature data.<\/p>\n<\/section>\n<section id=\"battery-and-recharge\">\n<h2><span class=\"ez-toc-section\" id=\"Check_usable_runtime_and_readiness_separately\"><\/span>Check usable runtime and readiness separately<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For a battery UPS, use the exact manufacturer&#8217;s supported battery and runtime data. Converting nominal volts \u00d7 ampere-hours into watt-hours is useful for an initial energy inventory, but it does not establish usable runtime at the required discharge rate and cutoff. Charging and discharge behavior must also match the battery chemistry.<\/p>\n<p>For an example of a fully qualified runtime table, <a href=\"https:\/\/products.pulspower.com\/cam\/mwdownloads\/download\/link\/id\/2244\/\" target=\"_blank\" rel=\"noopener noreferrer\">the external DC-UPS datasheet, revision 2.4, section 5<\/a> states battery condition, temperature, output conditions, battery choice, and aging considerations. Apply the equivalent conditions from the selected system&#8217;s own documentation.<\/p>\n<p>During recharge, the AC-DC source may need to supply the operating load and storage charging simultaneously. Check the DC UPS input behavior and source current at the actual bus voltage, including conversion losses. A unit that keeps the load running can still lack enough spare input power to restore the reserve within the required time.<\/p>\n<p>Specify whether a second interruption can occur before full recharge. Define what \u201cready\u201d means for the next required event, how that state is signaled, and what the equipment does while reserve is inadequate. A maximum-runtime claim at full charge does not answer a repeated-interruption requirement.<\/p>\n<\/section>\n<section id=\"weho-document-review\">\n<h2><span class=\"ez-toc-section\" id=\"Review_the_exact_WEHO_backup_product_boundary\"><\/span>Review the exact WEHO backup product boundary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For an SC-120 battery-charge supply inquiry, request the current full-model specification and supported battery arrangement before comparing it with the application\u2019s timeline. Use the product and document links below to define the review. Include transfer behavior, battery-mode output regulation, and required backup duration. Verify whether the output follows the discharging battery voltage, less internal path drop, or is actively regulated; then compare the resulting minimum voltage at the load terminals with the equipment\u2019s requirements.<\/p>\n<p>Keep the load output, charging output, battery connection, and common reference distinct in the document review. Do not add a charging-current number to load capacity without the manufacturer&#8217;s stated combined-output limits. Resolve any differences between the product page and supplied specification before drawing a model conclusion.<\/p>\n<p>If the requirement is tolerance of one source failure rather than loss of input energy, assess <a href=\"https:\/\/www.wehopower.com\/el\/news\/redundant-power-supply-n-plus-one-din-rail-systems\/\" data-weho-link-kind=\"guide\">redundancy and remaining source capacity<\/a> separately. Two AC-DC supplies sharing the same lost input do not create stored backup energy.<\/p>\n<details class=\"scene-reference-details product-reference-disclosure\">\n<summary>Original photograph: SC-120 model review<\/summary>\n<figure class=\"weho-product-feature\" id=\"product-reference-14\">\n<div class=\"weho-product-grid\">\n<figure class=\"product-shot\"><a href=\"https:\/\/www.wehopower.com\/el\/product\/ups-120w-ac-to-dc-single-output-power-supply-for-battery-charge\/\" aria-label=\"View WEHO SC-120 series product details\" title=\"SC-120 series product details\" data-weho-link-kind=\"product_detail\" data-weho-link-role=\"product_image\" data-weho-model=\"SC-120 series\" class=\"weho-product-image-link\"><img loading=\"lazy\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/sc-framed.webp?quality=85&#038;strip=all\" alt=\"Power-Supply Hold-Up Time vs. a DC UPS: Define the Backup Task  title=\" width=\"500\" height=\"820\" decoding=\"async\" power-supply hold-up time a dc ups: define the backup task title =\"\"><\/a><figcaption><strong>SC-120 series \u00b7 Battery-charge supply<\/strong> <span>Start the document review with the full model and battery arrangement.<\/span><span class=\"weho-image-actions\" data-weho-image-actions=\"3\"><span class=\"weho-image-hint\">SC-120 series \u00b7 Select image for product details.<\/span><a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/sc-120-series-product.jpg\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-role=\"view_original\">View larger image \u2197<\/a><\/span><\/figcaption><\/figure>\n<\/div><figcaption>Product-document review starting point. The photograph does not establish UPS transfer performance or the runtime in the hypothetical 20-second load timeline; qualify the exact model and complete battery arrangement. <a href=\"https:\/\/www.wehopower.com\/el\/product\/ups-120w-ac-to-dc-single-output-power-supply-for-battery-charge\/\" data-weho-link-kind=\"product_detail\">SC-120 product information \u2197<\/a> <\/figcaption><\/figure>\n<\/details>\n<p class=\"related-model-documents\">Download the <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2021\/11\/SC-120ok.pdf\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-kind=\"datasheet\">SC-120 specification<\/a> alongside the product information. Identify the complete output suffix and request confirmation of the battery, transfer and combined-output conditions needed for the proposed system; the document link is not a runtime guarantee.<\/p>\n<\/section>\n<section id=\"continuity-validation\">\n<h2><span class=\"ez-toc-section\" id=\"Validate_the_complete_event_and_recovery\"><\/span>Validate the complete event and recovery<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Use a qualified test setup with the intended source, storage module, battery where applicable, production wiring, and representative load. Record input-loss timing, voltage at the named load terminals, load state, storage state, alarms, and the recovery sequence. The <a href=\"https:\/\/www.wehopower.com\/el\/news\/24v-control-power-voltage-budget\/\" data-weho-link-kind=\"guide\">DC voltage budget<\/a> still applies during storage operation.<\/p>\n<p>Acceptance should cover the initial transition, the full service interval, orderly shutdown or continued operation, and input return. Include the specified starting state of charge, temperature, storage aging condition, and repeat-event condition. Test interrupted recharge if that is a credible operating case. Preserve both a voltage-validity result and the functional result: no resets, lost data, unintended outputs, or uncontrolled restarts under the defined test.<\/p>\n<p><a href=\"https:\/\/www.wehopower.com\/el\/contact\/\" data-weho-link-kind=\"inquiry\">Contact WEHO about the continuity and battery requirement<\/a>. Send the required continuity duration, load timeline, minimum valid DC voltage, and battery type if already chosen. Those inputs distinguish a hold-up question from a storage and charging-system question.<\/p>\n<\/section>\n<p class=\"worksheet-callout\">Optional project record: <a href=\"https:\/\/www.wehopower.com\/wp-content\/uploads\/2026\/10\/weho-blog-batch2-2026-10-17-product-v4-14-continuity-load-timeline.csv\" download=\"\" target=\"_blank\" rel=\"noopener noreferrer\" data-weho-link-kind=\"worksheet\">Download the interruption load-timeline sheet (CSV)<\/a>. Use it to record your own inputs and evidence; example entries are illustrative.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Separate supply hold-up from takeover behavior and storage-supported service duration. A hypothetical 20-second shutdown timeline requires 576 J at the load; the article then checks storage-path losses, capacitor energy, battery runtime conditions, and recharge readiness. It leads buyers toward a defined continuity task rather than a nominal backup label.<\/p>","protected":false},"author":2,"featured_media":19469,"parent":0,"menu_order":20,"comment_status":"closed","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[284],"class_list":["post-19575","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-product-articles","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/news\/19575","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/comments?post=19575"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/news\/19575\/revisions"}],"predecessor-version":[{"id":19651,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/news\/19575\/revisions\/19651"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/media\/19469"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/media?parent=19575"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/el\/wp-json\/wp\/v2\/news_category?post=19575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}