--- product_id: 51860459 title: "SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V)" brand: "saiyu" price: "136 zł" currency: PLN in_stock: true category: "Electronics" url: https://www.desertcart.pl/products/51860459-saiyu-dc-5v-to-dc-9v-usb-step-up-voltage store_origin: PL region: Poland --- # SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) **Brand:** saiyu **Price:** 136 zł **Availability:** ✅ In Stock ## Quick Answers - **What is this?** SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) by saiyu - **How much does it cost?** 136 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/51860459-saiyu-dc-5v-to-dc-9v-usb-step-up-voltage) ## Best For - saiyu enthusiasts ## Why This Product - Trusted saiyu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Tips: 1.The step up cable recommend 5V 2A input and 9V 800mAh output max. Convert Rate: 80%-90%. 2.Each cable inbuilt an intelligent protection IC circuit, please check your input or output devices current or voltage is whether over the cable's limit when you find your device is out of work. Specifications: Product Type: DC-DC Converter 5V to 9V Cable length:1.6 meter Input connector: USB A Male Output connector: DC male jack 5.5*2.1mm Input: 5V 2A (recommend) Output: 9V 800mAh Max Product Weight: 40g Certificate: CE/RoHS/FCC Package: 1*USB A male to DC connector cable 3*replacement connector(5.5*2.5mm,3.5*1.35mm,4.8*1.7mm) 1*waterproof pocket1*Velcro How to judge if the device work with the cable: Please consider following points before ordering: 1)Device current not over 2A. 2)Input power voltage is 5V,output device voltage is 9V. 3)Output DC connector size is 5.5*2.1mm,also we provide you 3 extra connectors,these will suit most of the your device. How to contact us 1.Click on "SAIYU-US" next to "Sold by", then click on "Ask a question" on the right top of page,we will get your message soon. 2.Send us email (saiyuus@hotmail.com) ,we will get your problem and provide you a solution within 24 hours. Thanks for your choice! ## Features - 【Specification &Instructions】Input: 5V USB A male; Output: 9V; Connectors: DC jack 5.5*2.1mm to USB A male. Note:The step up cable recommend 5V 2A input and 9V 800mAh output max. Convert Rate: 80%-90%.Each cable inbuilt an intelligent protection IC circuit, please check your input or output device's current & voltage is whether over the cable's limit when you find your device is out of work. - 【Multi Application】You can use it to power the router via power bank during power cuts. And also used in other device which is 5V, such as: router, stepper motor, desk lamp, solar panel, USB power pack, power adapter, etc. - 【Velcro Design】Each step up cable come with a velcro and a small waterproof pocket,convenient for you to collect and carry. - 【Functional Design】The Intelligent IC circuit provides over-current, over voltage and overload protection, short circuit protection,Synchronous rectification,made convert ratio more than 80%-90% , lower heat and long working time. - 【Customer Service】Please feel free to contact us if you have any questions or product issue,our friendly customer service team will help you solve it efficiently within 24 hours. ## Images ![SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) - Image 1](https://images-na.ssl-images-amazon.com/images/I/51GKh%2BkWFHL.jpg) ![SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) - Image 2](https://images-na.ssl-images-amazon.com/images/I/41%2B-nR8HQgL.jpg) ![SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) - Image 3](https://images-na.ssl-images-amazon.com/images/I/41wjiJVq0eL.jpg) ![SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) - Image 4](https://images-na.ssl-images-amazon.com/images/I/415JOknOo6L.jpg) ![SAIYU DC 5V to DC 9V USB Step Up Voltage Converter Adjustable Power Adapter Regulator Transformer Plug With Barrel Jack Booster Module(5V-9V) - Image 5](https://images-na.ssl-images-amazon.com/images/I/417GrL1WEJL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/51860459-saiyu-dc-5v-to-dc-9v-usb-step-up-voltage](https://www.desertcart.pl/products/51860459-saiyu-dc-5v-to-dc-9v-usb-step-up-voltage) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-25*