{"id":18168,"date":"2026-09-25T16:00:00","date_gmt":"2026-09-25T08:00:00","guid":{"rendered":"https:\/\/www.wehopower.com\/?post_type=news&p=18168"},"modified":"2026-09-25T16:00:00","modified_gmt":"2026-09-25T08:00:00","slug":"psc-150-12-access-control-load-charge-budget","status":"publish","type":"news","link":"https:\/\/www.wehopower.com\/bn\/news\/psc-150-12-access-control-load-charge-budget\/","title":{"rendered":"Battery-Backed Access Control Power: PSC-150-12 Load and Charge Budget"},"content":{"rendered":"<p><strong>Last Updated:<\/strong> September 25, 2026<\/p>\n<p><strong>\u09a6\u09cd\u09b0\u09c1\u09a4 \u0989\u09a4\u09cd\u09a4\u09b0:<\/strong> For a battery-backed access-control system, the WEHO PSC-150-12 is a candidate only when both the field equipment and battery are compatible with a 13.8V bus. The current PSC-150 specification lists CH1 at 13.8V\/7.5A, CH2 charging at 13.8V\/3A, and 150W total output, in a 159 \u00d7 97 \u00d7 30 mm case. Do not treat \u201c12V\u201d in the model name as a guaranteed 12.0V load output or add the two channel currents without checking the aggregate power and operating state.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/01-product-detail-1.png?quality=85&strip=all\" alt=\"Battery-Backed Access Control Power: PSC-150-12 Load and Charge Budget  title=\" loading=\"eager\" fetchpriority=\"high\" battery-backed access control power: psc-150-12 load and charge budget title=\"\"><\/figure>\n<p>Access-control buyers often ask for a \u201c12V UPS power supply.\u201d That phrase leaves crucial questions unanswered: Does the door controller tolerate a 13.8V charging bus? What are the lock&#8217;s pull-in and hold currents? How much battery recharge current is required after an outage? What is the permitted door-release behavior when mains power or battery power disappears? These questions define the system before a power-supply model is chosen.<\/p>\n<p>WEHO&#8217;s English <a href=\"https:\/\/www.wehopower.com\/bn\/product\/psc-150-12v-24v-ac-to-dc-ups-3-years-warranty-switching-power-supply\/\">PSC product page<\/a> identifies the UPS\/charger family. Its detailed model table and the current enterprise-drive PSC-150 sheet agree on the PSC-150-12&#8217;s 13.8V outputs and 159 \u00d7 97 \u00d7 30 mm enclosure. The page&#8217;s short introductory paragraph conflicts with that detailed table, so this article relies on the current sheet and table, not the introductory wattage or size claim. Obtain the exact ordered revision before procurement release.<\/p>\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\">\u09b8\u09c2\u099a\u09bf\u09aa\u09a4\u09cd\u09b0<\/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;\">\u099f\u0997\u09b2 \u0995\u09b0\u09c1\u09a8<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Start_with_voltage_compatibility_not_the_label\" >Start with voltage compatibility, not the label<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Budget_load_and_charging_together\" >Budget load and charging together<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Engineer_the_mains_and_battery_boundaries\" >Engineer the mains and battery boundaries<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Prove_the_failure_sequence\" >Prove the failure sequence<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Key_Takeaways\" >\u09ae\u09c2\u09b2 \u0997\u09cd\u09b0\u09b9\u09a3<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Conclusion\" >\u0989\u09aa\u09b8\u0982\u09b9\u09be\u09b0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.wehopower.com\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Frequently_Asked_Questions\" >\u09aa\u09cd\u09b0\u09be\u09af\u09bc\u09b6\u0987 \u099c\u09bf\u099c\u09cd\u099e\u09be\u09b8\u09bf\u09a4 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09be\u09ac\u09b2\u09c0<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.wehopower.com\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Does_PSC-150-12_output_exactly_120V\" >Does PSC-150-12 output exactly 12.0V?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.wehopower.com\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Can_I_add_75A_main_and_3A_charging_continuously\" >Can I add 7.5A main and 3A charging continuously?<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#What_is_the_current_PSC-150-12_enclosure_size\" >What is the current PSC-150-12 enclosure size?<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Does_the_model_name_guarantee_a_battery_runtime\" >Does the model name guarantee a battery runtime?<\/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\/bn\/news\/psc-150-12-access-control-load-charge-budget\/#Is_the_input_automatically_universal\" >Is the input automatically universal?<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Start_with_voltage_compatibility_not_the_label\"><\/span>Start with voltage compatibility, not the label<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The PSC-150-12 sheet calls the main output CH1 <strong>13.8V<\/strong>, not 12.0V. Its charging output CH2 is also 13.8V. A controller, reader, alarm module, lock, or relay marked \u201c12V\u201d may or may not accept 13.8V over the full environmental range. Check every load&#8217;s allowed voltage and tolerance; if any load requires a tightly regulated 12.0V, use a suitable downstream regulator or a different supply architecture rather than assuming the PSC is safe.<\/p>\n<p>The external battery chemistry, float-charge voltage, temperature needs, cable protection, and required backup time must also be compatible with the ordered revision. The product&#8217;s UPS function does not by itself prove a battery choice or a runtime.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Budget_load_and_charging_together\"><\/span>Budget load and charging together<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The following is an *illustrative* access-control operating state, not a claimed customer installation:<\/p>\n<table>\n<thead>\n<tr>\n<th>13.8V main-bus load<\/th>\n<th>Example concurrent current<\/th>\n<th>Approximate power<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Door controller and network interface<\/td>\n<td>1.1A<\/td>\n<td>15.2W<\/td>\n<\/tr>\n<tr>\n<td>Two readers and sensors<\/td>\n<td>0.8A<\/td>\n<td>11.0W<\/td>\n<\/tr>\n<tr>\n<td>Lock\/strike in the defined active state<\/td>\n<td>1.5A<\/td>\n<td>20.7W<\/td>\n<\/tr>\n<tr>\n<td>Alarm\/status accessories<\/td>\n<td>0.6A<\/td>\n<td>8.3W<\/td>\n<\/tr>\n<tr>\n<td><strong>CH1 example total<\/strong><\/td>\n<td><strong>4.0A<\/strong><\/td>\n<td><strong>55.2W<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/02-application-office.png?quality=85&strip=all\" alt=\"Battery-Backed Access Control Power: PSC-150-12 Load and Charge Budget  title=\" loading=\"lazy\" battery-backed access control power: psc-150-12 load and charge budget title=\"\"><\/figure>\n<p>The current sheet lists CH1 at 7.5A rated and CH2 at 3A charging, with 150W total output. If charging reaches the cited 3A while the example CH1 load is 4.0A, the simple 13.8V \u00d7 7.0A calculation is about <strong>96.6W<\/strong>, below the stated 150W aggregate. That does not validate battery-charge behavior, overload response, or lock transients. Confirm from the ordered documentation whether the channel figures can occur together in the required operating state, and measure the real system during recharge after an outage. Never design for 7.5A main plus 3A charging solely by adding two nameplate entries.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/03-application-oem-lab.png?quality=85&strip=all\" alt=\"Battery-Backed Access Control Power: PSC-150-12 Load and Charge Budget  title=\" loading=\"lazy\" battery-backed access control power: psc-150-12 load and charge budget title=\"\"><\/figure>\n<p>The current exterior size is <strong>159 \u00d7 97 \u00d7 30 mm<\/strong> (length \u00d7 width \u00d7 height). The shallow honeycomb metal housing, exposed terminal area, PCB extension, and battery leads need a protective enclosure with safe service access. The outer dimensions do not specify wall-box clearance, conductor bend space, fuse-holder room, or battery space.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Engineer_the_mains_and_battery_boundaries\"><\/span>Engineer the mains and battery boundaries<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The current sheet states that the AC input range is selected by a toggle switch between 90\u2013132VAC and 180\u2013264VAC. For the worked 230VAC site, verify the correct switch position on the exact unit *before energizing*. Do not treat the broad public-page input sentence as evidence that no selector action is required. A qualified installer should check upstream protection, protective earthing, terminal assignment, battery polarity, conductor sizes, and the local fire\/access-control rules.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/i1.wp.com\/www.wehopower.com\/wp-content\/uploads\/2026\/09\/04-terminal-and-dimensions.png?quality=85&strip=all\" alt=\"Battery-Backed Access Control Power: PSC-150-12 Load and Charge Budget  title=\" loading=\"lazy\" battery-backed access control power: psc-150-12 load and charge budget title=\"\"><\/figure>\n<p>Battery circuits can deliver high fault current. Place protection and disconnects according to the battery, cable, charger, enclosure, and applicable standard. Verify the configured door&#8217;s fail-safe\/fail-secure behavior and emergency egress requirements independently of the PSU choice. The rendered application scene illustrates the protected system boundary; it is not a wiring instruction for a particular door.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Prove_the_failure_sequence\"><\/span>Prove the failure sequence<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Commission at least four states: normal mains\/load, mains failure on battery, mains restoration with battery recharge, and low-battery or fault response. Record the CH1 voltage at the farthest device, lock pull-in current, CH2 charge current, battery voltage, enclosure temperature, and transition behavior. A listed low-battery cut-off in the sheet is a device feature, but the project must still validate that the door controller and egress system behave correctly before the cut-off point.<\/p>\n<p>The two application scenes show an office access-control enclosure and an OEM engineering-lab battery-switchover test with protected service boundaries. They are visual aids, not proof of safe wiring or a completed customer installation.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>\u09ae\u09c2\u09b2 \u0997\u09cd\u09b0\u09b9\u09a3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>PSC-150-12 is a 13.8V-bus candidate; check every nominal \u201c12V\u201d field device for compatibility.<\/li>\n<li>The current sheet lists 7.5A CH1, 3A charging CH2, 150W total, and 159 \u00d7 97 \u00d7 30 mm exterior size.<\/li>\n<li>Budget simultaneous load and recharge within the aggregate rating and verify transients experimentally.<\/li>\n<li>Confirm the 230VAC selector setting, battery chemistry\/protection, enclosure, egress behavior, and exact ordered revision.<\/li>\n<li>The public short description conflicts with its detailed table; do not merge the inconsistent figures.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>\u0989\u09aa\u09b8\u0982\u09b9\u09be\u09b0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>PSC-150-12 can be evaluated for a battery-backed access-control bus when the 13.8V voltage, load state, battery, and installation boundary are explicitly defined. It should not be selected from the words \u201c12V UPS\u201d alone. The procurement record needs the current revision, electrical load matrix, battery\/recharge requirement, enclosure drawing, and measured failure-sequence results.<\/p>\n<section class=\"weho-faq\" aria-labelledby=\"weho-faq-heading\">\n<h2 id=\"weho-faq-heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>\u09aa\u09cd\u09b0\u09be\u09af\u09bc\u09b6\u0987 \u099c\u09bf\u099c\u09cd\u099e\u09be\u09b8\u09bf\u09a4 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8\u09be\u09ac\u09b2\u09c0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<article class=\"weho-faq-item\">\n<h3><span class=\"ez-toc-section\" id=\"Does_PSC-150-12_output_exactly_120V\"><\/span>Does PSC-150-12 output exactly 12.0V?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. The current PSC-150 sheet lists 13.8V for both CH1 and CH2 on the -12 model. Check every field device&#8217;s permitted input range.<\/p>\n<\/article>\n<article class=\"weho-faq-item\">\n<h3><span class=\"ez-toc-section\" id=\"Can_I_add_75A_main_and_3A_charging_continuously\"><\/span>Can I add 7.5A main and 3A charging continuously?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Do not assume that from two rows. The same current sheet lists 150W total; verify the simultaneous operating state and ordered revision.<\/p>\n<\/article>\n<article class=\"weho-faq-item\">\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_current_PSC-150-12_enclosure_size\"><\/span>What is the current PSC-150-12 enclosure size?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The current enterprise-drive sheet and detailed official table list 159 x 97 x 30 mm, excluding installation, wiring, and battery clearances.<\/p>\n<\/article>\n<article class=\"weho-faq-item\">\n<h3><span class=\"ez-toc-section\" id=\"Does_the_model_name_guarantee_a_battery_runtime\"><\/span>Does the model name guarantee a battery runtime?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>No. Runtime depends on actual load, battery chemistry and capacity, allowable discharge, temperature, and the required safety behavior.<\/p>\n<\/article>\n<article class=\"weho-faq-item\">\n<h3><span class=\"ez-toc-section\" id=\"Is_the_input_automatically_universal\"><\/span>Is the input automatically universal?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The current sheet describes a selector for 90-132VAC or 180-264VAC. Verify its position for the actual site before energizing.<\/p>\n<\/article>\n<\/section>","protected":false},"excerpt":{"rendered":"<p>Assess PSC-150-12 for 13.8V access-control loads and battery charging, with 7.5A main, 3A charge, 150W aggregate, and 159 x 97 x 30 mm fit.<\/p>","protected":false},"author":1,"featured_media":18163,"parent":0,"menu_order":2,"comment_status":"","ping_status":"","template":"","format":"standard","meta":{"_acf_changed":false,"_joinchat":[],"footnotes":""},"news_category":[149],"class_list":["post-18168","news","type-news","status-publish","format-standard","has-post-thumbnail","hentry","news_category-blog","entry"],"acf":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/news\/18168","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/types\/news"}],"author":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/comments?post=18168"}],"version-history":[{"count":1,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/news\/18168\/revisions"}],"predecessor-version":[{"id":18213,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/news\/18168\/revisions\/18213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/media\/18163"}],"wp:attachment":[{"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/media?parent=18168"}],"wp:term":[{"taxonomy":"news_category","embeddable":true,"href":"https:\/\/www.wehopower.com\/bn\/wp-json\/wp\/v2\/news_category?post=18168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}