--- product_id: 306185517 title: "SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output" brand: "soulbay" price: "32349CFA" currency: XOF in_stock: true reviews_count: 8 category: "Soul Bay" url: https://www.desertcart.sn/products/306185517-soulbay-30w-reverse-polarity-universal-power-adapter-with-9pcs-adaptor store_origin: SN region: Senegal --- # 30W max power output Reverse polarity switchable 9 versatile adapter tips SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output **Brand:** soulbay **Price:** 32349CFA **Availability:** βœ… In Stock ## Summary > πŸ”‹ Power up smarter, not harder β€” the only adapter your tech tribe needs! ## Quick Answers - **What is this?** SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output by soulbay - **How much does it cost?** 32349CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/306185517-soulbay-30w-reverse-polarity-universal-power-adapter-with-9pcs-adaptor) ## Best For - soulbay enthusiasts ## Why This Product - Trusted soulbay brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safe & Sound Operation:** Built-in protections against overvoltage, overcurrent, short circuits & overheating. - β€’ **Power Your Entire Tech Arsenal:** One adapter, 3V to 12V output, covers routers, speakers, cameras & more. - β€’ **Plug & Play with 9 Adapter Tips:** Easily switch connectors for seamless compatibility across devices. - β€’ **Compact, Portable & Professional:** Lightweight design with clear markings, perfect for home or office setups. - β€’ **Flip the Polarity, Not Your Devices:** Dual polarity support means no more guessing or damaging your gear. ## Overview The SoulBay 30W Reverse Polarity Universal Power Adapter is a versatile, multi-voltage AC/DC power supply designed for professional and home electronics. Featuring selectable output voltages from 3V to 12V, a maximum 2A current output, and 9 interchangeable adapter tips, it supports a wide range of devices including routers, speakers, cameras, and keyboards. Its unique reversible polarity function ensures compatibility with both positive and negative center core devices, while built-in safety features protect your electronics from damage. Compact and clearly labeled, this adapter replaces multiple chargers, saving space and cost for the modern multitasker. ## Description Product Description SoulBay 30W Universal AC Adapter Reverse Polarity DC Power Supply 3V to 12V Reverse Polarity: You can select which polarity you want! This SoulBay 30W AC Adapter allows for use across multiple devices, multiple DC voltages, and multiple connector types. Comes with protection of over voltages, over current, short circuits and over temperature, more safe! Secure connection : 2-pin dc jack with clear adapter dimension mark, easily connected to the adapter cord end and change polarity. Compatible with a variety of household electronics within 3V to 12V output range, such as router, speaker, monitor, camera, smartphone, led strip, piano, keyboard, effect pedal board, DIY machine and more. Instructions 1. Connect the correct adapter plug - Select a suitable plug and then insert into the DC cable end, make sure it's firmly attached to the power port of your device. 2. Set the right DC output voltage - There are 7 Volts options. (use the little key to choose the right voltage. If the required voltage is not in the options, please choose the closest one. eg, if your device needs 5.5V, you can choose 5V or 6V) 3. Connect the adapter to the electrical socket , ready to power your device! FAQ How Can I Change and Confirm the Polarity? Answer: Make sure the adapter cord end you are going to connect has an arrow symbol. - Connects the dc tip side with dimension remark to the cord end, i s positive polarity . - Conencts the dc tip side without the dimension remark to the cord is negative polarity . You can also distinguish the polarity via the symbol on the dc tip. What’s the working Voltage and Amps range? Answer: We name this power adapter 30W. 30Watt depends on the max output on 12V 2A and USB Port, 12V*2A + 5V*1.2A = 30W. 2Amp is the max current output on each Voltage setting, backwards compatible 1.8A 1.5A 1A 0.5A. What's the function of the KEY? A nswer: To adjust the voltage knob and choose the suitable Volt setting. Versatile Multi-Voltage Multi-Tips Quality Specifications Review: Far less unsafe than some suggest when properly connected and set-up - This is designed and intended for use as a power supply and not a recharger. It is designed for use with a variety of electronic devices whose power needs fit within the 3-12V at 2.5A range (or lower current levels) and where it can replace or be a permanent alternative to disposable or rechargeable batteries. The "SoulBay 30W Reverse Polarity Universal AC Adapter Multi Voltage DC Power Supply, with 9pcs Adaptor Tips, Compatible with 3V to 12V Household Electronics, 2Amp Output" supplies voltages mostly stepped at 1.5v intervals in well-marked and positively engaged steps when set by the enclosed key - a medium flat blade screwdriver will work equally well. It is unusual in that it has a means to reverse the polarity of the output voltage such that the numerous devices with a positive centre core connector are readily accommodated but, by reversing the tip, allows the relative few with a negative core to also be served. Some reviews appear to suggest that it is potentially dangerous to use, not to the user but to devices, because there is no certainty about tip orientation. That is INCORRECT and MISLEADING! The output lead is clearly labelled on its 'normal' side and provides a positive core when a tip is properly connected. Each tip is also very obviously labelled on both larger surfaces, one showing the core as positive, the other negative. It could not be much clearer unless in flashing red neon! In addition to subsequently purchasing one for personal use, one identical was first purchased by a family member as a power source for a single device, the alternative being an OEM PSU at more than twice the price as it requires a negative core supply and they are almost impossible to find as third-party alternatives! It was set up to meet its specific voltage and polarity needs and works perfectly. The tips are a very tight fit and need to be firmly connected until fully engaged - they will not easily accidentally disconnect - it needs a strong grip! The voltage dial, once set, will stay as-is and cannot easily disengage without the aid of the key or a screwdriver. Safety considerations are better implemented than with a similar product from another brand where its tips use an easily disconnected co-axial method and voltage adjustment is by a large knob whose position could be easily altered by a careless touch, passing pet or young child and pass unnoticed, risking the device should the voltage supply be beyond its limits - it does have a small LED display for output voltage but that cannot prevent an accidental voltage increase, only show that it occurred. Review: Comprehensive selection ! - Comprehensive selection of adapters, suiting most 12 volt items. Well-made and a good price. ## Features - Reverse Polarity Power Adaptor: Most adapters only have single polarity, positive (+) or negative (-) polarity. This SoulBay AC Adapter owns Dual Polarity, reversible and changeable. - Versatile Power Supply: Straightforward adjustment for All-in-one multi adapters and multi amp devices, solid and well built. Voltage range, connector jacks and polarity are Selectable. - Wide Applications: The power supply is for router, speaker, monitor, camera, smartphone, led strip, piano, keyboard, effect pedal board, and a variety of household electronics require 3 volt, 4.5 volt, 5 volt, 6 volt, 7.5 volt, 9 volt, 12 volt DC output with 2000ma load. - Save On Adapters: Own this AC DC adapter, you could use it for multiple devices and replace a lot old power adapters, savings on buying a new electronic device or extra original expensive power supply. - Package: You will get a 1 x 3-12V universal adapter, 9 x changeable adapter tips, 1 x key. Each adapter tip has the clear dimension mark, no mess and convenient for you! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08QRWW89M | | Amperage | 2000 Microamps | | Best Sellers Rank | 5,981 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 186 in AC Adapters | | Box Contents | Muti Jacks | | Brand | SoulBay | | Brand Name | SoulBay | | Colour | Black | | Compatible Devices | Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics | | Compatible Phone Models | Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics | | Compatible Power Plug Type | Type I - 3 pin (Australian) | | Compatible devices | Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics Compatible devices Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics See more | | Compatible phone models | Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics Compatible phone models Speakers Routers CCTV Cameras LCD TV Box USB HUB IP Camera Led Lamps Router 3V-12V DC Household Electronics See more | | Connectivity Technology | USB | | Connector Type | 5.5 x 2.1mm, 5.5 x 2.5mm | | Connector type | 5.5 x 2.1mm, 5.5 x 2.5mm | | Country of Origin | China | | Current Rating | 2000 Milliamps | | Current Type | AC to DC | | Customer Package Type | 12V DC Power Supply | | Customer Reviews | 4.4 out of 5 stars 263 Reviews | | Enclosure Material | Plastic | | Form Factor | Rectangular | | Frequency Range | 50 Hz - 60 Hz | | Included components | Muti Jacks | | Input Voltage | 12 Volts | | Item Weight | 0.17 Kilograms | | Main Power Connector Type | 2 pin | | Manufacturer | SoulBay | | Model Name | 12V Power Supply | | Model Number | SoulBay 30W | | Mounting Type | Tabletop Mount | | Number of Items | 1 | | Number of Power Levels | 7 | | Output Current | 2 Amps | | Output Voltage | 12 Volts (DC) | | Portable | Yes | | Power Plug Type | Type I - 3 pin (Australian) | | Power Source | Corded Electric | | Product Warranty | 1 year warranty | | Special Features | Charging Indicator, Lightweight Design, Short Circuit Protection | | Special feature | Charging Indicator, Lightweight Design, Short Circuit Protection | | Specification Met | CE, FCC | | Total USB 2.0 Ports | 1 | | Total USB Ports | 1 | | UPC | 789219688642 | | Unit Count | 1.0 count | | Wattage | 30 watts | | Wired Charging Connector Type | USB Type A | ## Product Details - **Amperage:** 2000 Microamps - **Brand:** SoulBay - **Colour:** Black - **Connector type:** 5.5 x 2.1mm, 5.5 x 2.5mm - **Included components:** Muti Jacks - **Input voltage:** 12 Volts - **Special feature:** Charging Indicator, Lightweight Design, Short Circuit Protection - **Total USB ports:** 1 ## Images ![SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output - Image 1](https://m.media-amazon.com/images/I/718ECZHkCrL.jpg) ![SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output - Image 2](https://m.media-amazon.com/images/I/61nvVLQmI3S.jpg) ![SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output - Image 3](https://m.media-amazon.com/images/I/715KAx1AmFL.jpg) ![SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output - Image 4](https://m.media-amazon.com/images/I/71iIjc7wCvS.jpg) ![SoulBay 30W Reverse Polarity Universal Power Adapter with 9pcs Adaptor Tips | 3V to 12V AC/DC Adapter Multi Voltage Power Supply for Household Electronics, 2Amp Output - Image 5](https://m.media-amazon.com/images/I/71dVZ+Y469S.jpg) ## Questions & Answers **Q: Can i use this to supply a device requiring 0.4-1.0a 12v dc in?** A: Yes, it can. **Q: What is the cable length?** A: The low voltage DC output cable is approx. 1.48 metres from mains unit to the end of the 2-pin socket. There is no input mains lead as the 13A plug forms part of the mains unit itself, which is of the nickname 'wall wart' type. **Q: WHat is the length of the barrel** A: The length may be inconsistent, attach the size and length of all plugs: 5.5*2.5mm 12cm; 2.5mm 12mm; 3.5mm 14mm; 4.0*1.7mm 12mm; 3.5*1.35mm 12mm; 5.0*2.1mm 12mm; 5.5*2.1mm 12mm; 5.5*1.5mm 13mm **Q: Is the output voltage regulated? ie. if variable power is drawn by devices (such as musical keyboards,) does this change the voltage?** A: It actually depends on if the currect your device draws is stable or not. From what you mentioned, there is two possibilities when the total power consumption is variable, one is the regulated voltage output with changeable current, another is un-regulated voltage with stable current. This power adapter belongs to the second situation, the voltage output may drop or up within 5% range, not actual 12V(11.9V or 12.2V) when you adjust the voltage knob at DC 12V setting. Hope this may help you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Far less unsafe than some suggest when properly connected and set-up *by L***R on 7 January 2022* This is designed and intended for use as a power supply and not a recharger. It is designed for use with a variety of electronic devices whose power needs fit within the 3-12V at 2.5A range (or lower current levels) and where it can replace or be a permanent alternative to disposable or rechargeable batteries. The "SoulBay 30W Reverse Polarity Universal AC Adapter Multi Voltage DC Power Supply, with 9pcs Adaptor Tips, Compatible with 3V to 12V Household Electronics, 2Amp Output" supplies voltages mostly stepped at 1.5v intervals in well-marked and positively engaged steps when set by the enclosed key - a medium flat blade screwdriver will work equally well. It is unusual in that it has a means to reverse the polarity of the output voltage such that the numerous devices with a positive centre core connector are readily accommodated but, by reversing the tip, allows the relative few with a negative core to also be served. Some reviews appear to suggest that it is potentially dangerous to use, not to the user but to devices, because there is no certainty about tip orientation. That is INCORRECT and MISLEADING! The output lead is clearly labelled on its 'normal' side and provides a positive core when a tip is properly connected. Each tip is also very obviously labelled on both larger surfaces, one showing the core as positive, the other negative. It could not be much clearer unless in flashing red neon! In addition to subsequently purchasing one for personal use, one identical was first purchased by a family member as a power source for a single device, the alternative being an OEM PSU at more than twice the price as it requires a negative core supply and they are almost impossible to find as third-party alternatives! It was set up to meet its specific voltage and polarity needs and works perfectly. The tips are a very tight fit and need to be firmly connected until fully engaged - they will not easily accidentally disconnect - it needs a strong grip! The voltage dial, once set, will stay as-is and cannot easily disengage without the aid of the key or a screwdriver. Safety considerations are better implemented than with a similar product from another brand where its tips use an easily disconnected co-axial method and voltage adjustment is by a large knob whose position could be easily altered by a careless touch, passing pet or young child and pass unnoticed, risking the device should the voltage supply be beyond its limits - it does have a small LED display for output voltage but that cannot prevent an accidental voltage increase, only show that it occurred. ### ⭐⭐⭐⭐⭐ Comprehensive selection ! *by J***6 on 30 May 2026* Comprehensive selection of adapters, suiting most 12 volt items. Well-made and a good price. ### ⭐⭐⭐⭐ Versatile mains adapter with good output range and reversible polarity *by M***N on 22 September 2022* This is a compact, quite powerful and versatile mains adapter at a sensible price that will provide 2 amps of output current throughout its range from 3 volts (where 2 amps = 6 watts) to 12 volts (where 2 amps = 24 watts). I bought this unit mainly for the reversible output polarity feature which consists of a decent length lead that terminates in a two-pin socket. What I liked: Nine of the more common sizes of DC barrel connectors are supplied, each of which 'plugs into' this in-line socket either way round. Output polarity (i.e. centre pin positive or negative) depends on which way round you insert the barrel connector onto the lead and polarity is marked on both the lead and plug-in connector: simply line up the arrowhead on the lead with the required polarity on the barrel connector and push the connector firmly home. The output voltage selector switch is quite stiff to turn, very positive and cannot be accidentally changed. The barrel connectors sit firmly in the socket and take some effort to remove, so they should not fall out inadvertently. Voltage regulation is very good: less than 0.05 volts drop from no load to half load - that's pretty stable! A separate USB A female socket is provided on the base of the unit with a 5 volts 2amp output rating. The unit stays very cool in operation and barely warmed up in over an hour's use on a warm day. The 5 Volt output from the built-in USB socket was almost right on the button at 5.06V: that's very good! What I wasn't so impressed with: The output voltages on the barrel connector were a tad high for my liking: nothing to worry about, but they were up to 10% high at the lower voltages. This is highly unlikely to cause any damage to connected equipment as a freshly-manufactured unused 1.5 volt alkaline battery can initially provide in excess of 1.6V. The output voltages on my unit are recorded below. Rated Actual 3V 3.33V 4.5V 4.71V 5V 5.21V 6V 6.18V 7.5V 7.67V 9V 9.06V 12V 12.18V The unit is double-insulated and does not have an earth connection (the earth pin is plastic, not metal), which results in a tiny amount of mains leakage current, but this is very low and I could only JUST detect it by rubbing the barrel connector across the inside of my wrist (it felt like a barely detectable nibbling sensation). Hint: If you find the range of barrel connectors included with the adapter is somewhat limited or does not contain the one you need, I extended the range by: 1) purchasing this set of barrel connectors: Amazon part no. ASIN: B07F7776T6 2) connecting the 5.5x2.1mm barrel plug that came with the Soulbay mains adapter onto the two pin lead, selecting the required polarity. 3) pushing the appropriate Aceyoon barrel connector for the equipment I was using onto the end of the 5.5 x2.1mm Soulbay barrel connector. A little bit of a christmas tree admitted, but it worked! Overall, versatile and not bad for the price, but the unit lost one star with me for the slightly high output voltages at the lower end of the range. This could just be that my unit wasn't terribly well calibrated: you may fare better. ## Frequently Bought Together - SoulBay 30W Reverse Polarity Universal AC Adapter Multi Voltage DC Power Supply, with 9pcs Adaptor Tips, Compatible with 3V to 12V Household Electronics, 2Amp Output - SoulBay 12W Universal 3V 4.5V 5V 6V 7.5V 9V 12V AC DC Adapter Switching Power Supply with 8 Selectable Adapter Plugs for Household Electronics Routers Speaker CCTV IP Cameras - 1000mA Max --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/306185517-soulbay-30w-reverse-polarity-universal-power-adapter-with-9pcs-adaptor](https://www.desertcart.sn/products/306185517-soulbay-30w-reverse-polarity-universal-power-adapter-with-9pcs-adaptor) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-28*