{"id":977,"date":"2025-11-28T13:31:33","date_gmt":"2025-11-28T13:31:33","guid":{"rendered":"https:\/\/mmscom.net\/index.php\/2025\/11\/28\/cuktech-15-ultra-powerbank-review\/"},"modified":"2025-11-28T13:31:33","modified_gmt":"2025-11-28T13:31:33","slug":"cuktech-15-ultra-powerbank-review","status":"publish","type":"post","link":"https:\/\/mmscom.net\/index.php\/2025\/11\/28\/cuktech-15-ultra-powerbank-review\/","title":{"rendered":"CUKTECH 15 Ultra Powerbank \u2013 Review."},"content":{"rendered":"<p class=\"has-text-align-center\"><em>For A Modern Powerbank the <\/em><em>CUKTECH <\/em><em>15 Ultra <\/em><em>has <\/em><em>it <\/em><em>all. <\/em><\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"558\" height=\"768\" class=\"wp-image-194415 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"CUKTECH 15 Ultra Powerbank Review.\" sizes=\"auto, (max-width: 558px) 100vw, 558px\" title=\"CUKTECH 15 Ultra Powerbank Review.\" data-src=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/sylpelcvdwkyjm8-z83wuq4215307579901351218-558x768.jpg\" data-srcset=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/sylpelcvdwkyjm8-z83wuq4215307579901351218-558x768.jpg 558w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/sylpelcvdwkyjm8-z83wuq4215307579901351218-509x700.jpg 509w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/sylpelcvdwkyjm8-z83wuq4215307579901351218.jpg 744w\"><\/figure>\n<p><em><strong>Good Points:-<\/strong><\/em><\/p>\n<ul class=\"wp-block-list\">\n<li>140W Maximum Output.<\/li>\n<li>Useful TFT display<\/li>\n<li>Fast charging for mutliple devices.<\/li>\n<\/ul>\n<p><em><strong>Bad Points<\/strong><\/em>.<\/p>\n<ul class=\"wp-block-list\">\n<li>No Wireless charging<\/li>\n<li>Slow Interface.<\/li>\n<\/ul>\n<p>You might not have heard of Cuktech yet, but this emerging brand has a solid foundation. Previously a white-label manufacturer, Cuktech took a significant step in 2022 by merging with ZMI, a well-known brand within Xiaomi&#8217;s vast ecosystem. With ambitious global expansion plans, Cuktech is launching intriguing products such as the Cuktech 30, a massive 40000mAh power bank with a 300W power budget and Qi wireless charging. This review focuses on the Cuktech 15 Ultra, a capable 20000mAh power bank offering a 165W power budget.<\/p>\n<p>Like Anker and UGREEN, Cuktech chose a vertical profile for the power bank, a decision that undeniably boosts the 15 Ultra&#8217;s portability.<\/p>\n<p>Beyond its shape, the 15 Ultra boasts thoughtful design elements. The clean grey and black color combination is visually appealing, while the textured back provides a secure and comfortable grip. Overall, Cuktech has executed the design of the 15 Ultra effectively, leaving me with no complaints.<\/p>\n<p><em><strong>In The Box:-<\/strong><\/em><\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"768\" class=\"wp-image-194419 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"CUKTECH 15 Ultra Powerbank Review.\" sizes=\"auto, (max-width: 314px) 100vw, 314px\" title=\"CUKTECH 15 Ultra Powerbank Review.\" data-src=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_1929546769355639230993467-314x768.jpg\" data-srcset=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_1929546769355639230993467-314x768.jpg 314w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_1929546769355639230993467-629x1536.jpg 629w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_1929546769355639230993467.jpg 819w\"><\/figure>\n<p>In the box comes the powerbank, usual documents, a USB Type C to C cable that can be used to charge the powerbank, or charge your device, and a nice velvet pouch to carry it all in.<\/p>\n<p>The front button wakes up the display, which offers a comprehensive overview including battery level, charging duration, and real-time power flow. While the simultaneous display of all this information can feel a bit busy, ultimately, the panel provides all the crucial details you need.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"768\" class=\"wp-image-194417 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"CUKTECH 15 Ultra Powerbank Review.\" sizes=\"auto, (max-width: 314px) 100vw, 314px\" title=\"CUKTECH 15 Ultra Powerbank Review.\" data-src=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2050161980994002108742077-314x768.jpg\" data-srcset=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2050161980994002108742077-314x768.jpg 314w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2050161980994002108742077-629x1536.jpg 629w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2050161980994002108742077.jpg 819w\"><\/figure>\n<p>You won&#8217;t encounter any issues taking the 15 Ultra on a plane due to its 72Wh battery. The 20000mAh capacity offers good endurance for charging your phone and accessories several times, and its charging efficiency is on par with other brands I&#8217;ve reviewed.<\/p>\n<p>Just a heads-up: that 20000mAh rating on the 15 Ultra doesn&#8217;t mean you&#8217;ll get a full 20000mAh of charge for your devices. Power banks lose some energy during the charging process, so you&#8217;re looking at closer to 12000mAh of actual charging capacity (around 60% efficiency). This is normal for all power banks, so you&#8217;re not at a disadvantage with the 15 Ultra.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"768\" class=\"wp-image-194420 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"CUKTECH 15 Ultra Powerbank Review.\" sizes=\"auto, (max-width: 314px) 100vw, 314px\" title=\"CUKTECH 15 Ultra Powerbank Review.\" data-src=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_193008159881374058147740-314x768.jpg\" data-srcset=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_193008159881374058147740-314x768.jpg 314w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_193008159881374058147740-629x1536.jpg 629w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250512_193008159881374058147740.jpg 819w\"><\/figure>\n<p>For charging your devices, the 15 Ultra provides two USB-C ports and a standard USB-A port. The main USB-C port is a powerhouse, delivering up to 140W via USB PD 3.1, while the second USB-C port offers a respectable 65W. The 18W USB-A port is ideal for lower-power accessories. Using both USB-C ports simultaneously allows for a combined output of 165W. Below are the detailed power specifications for each port and how they work together:<\/p>\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>USB-C1 (Input\/Output, Maximum 140W): [List of voltages and amperages]<\/li>\n<li>USB-C2 (Output, Maximum 65W): [List of voltages and amperages]<\/li>\n<li>USB-A (Output, Maximum 18W): [List of voltages and amperages]<\/li>\n<li>Simultaneous Output (USB-C1 + USB-C2, Maximum 165W): 100W + 65W<\/li>\n<li>Simultaneous Output (USB-C1 + USB-A, Maximum 118W): 100W + 18W<\/li>\n<li>Simultaneous Output (USB-C2 + USB-A, Maximum 83W): 65W + 18W<\/li>\n<li>Simultaneous Output (USB-C1 + USB-C2 + USB-A, Maximum 163W): 100W + 45W + 18W<\/li>\n<\/ul>\n<\/blockquote>\n<p>The 15 Ultra reliably charged my range of test devices, including the Galaxy S24 Ultra, Galaxy ZFold 6, Iphone 16 plus, Tab S9 Ultra and Galaxybook pro 360,\u00a0 Importantly, I observed no overheating during use, indicating effective thermal management by Cuktech. The device was even able to identify my Samsung devices, and the phones themselves reported the abiltity for &#8220;Superfast Charging&#8221; that said charging cable choice did affect charging speeds.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"768\" class=\"wp-image-194421 lazyload\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" alt=\"CUKTECH 15 Ultra Powerbank Review.\" sizes=\"auto, (max-width: 314px) 100vw, 314px\" title=\"CUKTECH 15 Ultra Powerbank Review.\" data-src=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2049006599024390656685428-314x768.jpg\" data-srcset=\"https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2049006599024390656685428-314x768.jpg 314w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2049006599024390656685428-629x1536.jpg 629w, https:\/\/www.coolsmartphone.com\/wp-content\/uploads\/2025\/05\/20250502_2049006599024390656685428.jpg 819w\"><\/figure>\n<p>The 15 Ultra delivers incredibly fast charging. My phone went from zero to 24% in a mere 15 minutes, and the USB-C port pushed that to an even quicker 27% in the same short time. This level of speed is among the best I&#8217;ve encountered with a power bank.<\/p>\n<p>The Cuktech charger boasts a clever final feature: while it can handle a 100W input on its own, you can also connect two wall chargers simultaneously for a combined 165W. This unlocks a special &#8220;Beast Mode&#8221; on the 15 Ultra, complete with a visually satisfying animation that tracks the charging percentage in real-time. In this mode, I observed the phone rocket from empty to 80% in a mere 20 minutes. Despite this rapid charging, the device remained only slightly warm to the touch, alleviating any concerns about excessive heat.<\/p>\n<p><em><strong>Conclusion:-<\/strong><\/em><\/p>\n<p>The Cuktech 15 Ultra offers a compelling package with few drawbacks. While the user interface for setting the USB-C port&#8217;s function (input, output, or bidirectional) isn&#8217;t the snappiest, its limited use makes this a minor quibble. The absence of wireless QI2 charging is understandable, likely a cost-saving measure that contributes to the power bank&#8217;s attractive price point. For those seeking a potent, future-ready high-speed charger capable of handling three devices, the Cuktech 15 Ultra delivers. It&#8217;s fast, boasts ample capacity, and maintains a reasonable size and weight. While perhaps not an everyday carry for a backpack, it&#8217;s an excellent companion for weekends or extended trips, and the rapid &#8220;Beast Mode&#8221; is a lifesaver for last-minute charging needs.<\/p>\n<p class=\"has-text-align-center\">The 15 Ultra is available from <a href=\"https:\/\/amzn.eu\/d\/4w6z428\">Amazon<\/a> and CUKTECH web site at \u00a389.99<\/p>\n<p>The post <a href=\"https:\/\/www.coolsmartphone.com\/2025\/05\/12\/cuktech-15-ultra-powerbank-review\/\">CUKTECH 15 Ultra Powerbank &#8211; Review.<\/a> is original content from <a href=\"https:\/\/www.coolsmartphone.com\">Coolsmartphone<\/a>. If you see it on another news website, please let us know.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For A Modern Powerbank the CUKTECH 15 Ultra has it all. Good Points:- Bad Points. You might not have heard of Cuktech yet, but this emerging brand has a solid foundation. Previously a white-label manu<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-977","post","type-post","status-publish","format-standard","hentry","category-ios"],"_links":{"self":[{"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/posts\/977","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/comments?post=977"}],"version-history":[{"count":0,"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/posts\/977\/revisions"}],"wp:attachment":[{"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/media?parent=977"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/categories?post=977"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mmscom.net\/index.php\/wp-json\/wp\/v2\/tags?post=977"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}