We’ve spent hundreds of hours researching and comparing 12V.4A Power Supply of all specifications to find the best one for any need (or budget). Here are the results.

The Best 12V.4A Power Supply of 2020 – Top Rated & Reviewed

2,311 Reviews Scanned

Rank No. #1
Yustda (10Ft Extra Long) 12V DC 3.5A-4A AC Adapter Power Supply Adapter 5.5mmx2.5mm Battery Charger Mains
  • World Wide Input Voltage 100-240VAC 50/60Hz.
  • Replacement AC Adapter/Charger ,100% Compatible with the device model listed.
  • Charger/Adapter has total 10 Ft Long power cord.
  • Safety Features: Over current protection; Total power protection; Over voltage protection; Short Circuit Protection.
  • Manufactured with the highest quality materials. Certification: FCC, CE and RoHS.
SaleRank No. #2
12V 7A Universal Power Adapter, 3A~4A~5A~6A~7A Universal Converter, Transformer, AC 100-240V Input with 5.5x2.5mm/0.21x0.1in DC Output, AC Adapter for LED Strip Lights, Security Camera, 3D Printer
  • ⚡ HIGH CAPACITY - Suitable for any device with 5A~7A or lower electrical requirements. Perfect replacement for 4A / 5A / 6A / 7A required devices as amperage is not forced.
  • 🔌 WIDE APPLICATION RANGE - For LED Strip Lights, 3D Printer, CCTV Security Camera, Wifi Router, LED monitor and others. No capacity concerns up to 7A.
  • 🚀 COMPACT & LIGHT - Smaller and lighter comparing to average 7A 12V power supply adapters (BLOCK SIZE: L5.53 x W2.38 x H1.33 inches / L140.5 x W60.5 x H34 mm; BLOCK WEIGHT: 13.7oz/0.86lb)
  • 🔨 TESTED PRODUCTS - Certified by FCC, CE. Burn-in tested, Hi-Post Tested, LPS tested. Made of pure PC fireproof shell material. Built-in OCP (Over-Current Protection) and SCP (Short -Circuit Protection)
  • 💰 Free Return - In case the product does not meet your needs, we will give a full refund
Rank No. #3
DC 12V 4A 48W AC Adapter Power Supply 12V 4A 48W AC/DC Power Adapter with 5.5x2.1mm DC Plug 12V 4A 48W for LCD Monitor, LED Strip Light and Other Low Voltage Device
  • Please confirm the parameters you need: AC input 100-240V 50 60Hz, DC output 12V 4A; wide voltage input, in line with global standards
  • Please confirm the DC interface specifications you need: DC connector size 2.5mm inner diameter, 5.5mm outer diameter, cable length 90cm/2.95ft; all copper nickel-plated plug, standard safety input jack, good conductivity, wear-resistant and not deform , pass plug and unplug test, strong corrosion resistance
  • Good safety performance and high reliability: 100% brand new products, adopting IC chip chip motherboard solution, more stable quality; high quality components, more stable performance
  • Four protections and safety guarantees: over-voltage protection, over-current protection, short-circuit protection, over-heat protection; shipment after load aging test
  • Please confirm the packaging and service: the package contains 1x12v 4a AC adapter and 1xAC power cable; 1 year warranty. Should you need any further assistance, please do not hesitate to contact us
Rank No. #4
12V AC DC Power Supply Charger Cord for Insignia 19" 20" 24" 28" 32" LED TV NS-32D311NA15 NS-24ED310NA15 NS-28D310NA15 NS-19E310A13 NS-19E310NA15 NS-24D510NA15 NS-24E200NA14 NS-32D420NA16
  • Brand New. Input AC100-240V ; Output DC 11V -13V 4A-6A,100%
  • Package Includes: 1 X AC Adapter, 1 X Power Cord; CE/FCC/ROHS Certified for Security.
  • Provides Over Voltage Protection, Over Current Protection, Short-circuit Protection.
  • Compatible models: Insignia 19" 20" 24" 28" 32" LED TV HDTV DVD MODELS including: NS-19E310A13 , NS19E310NA15 , NS-19E310NA15 , NS-19E310NA15 , NS-20ED310NA15 , NS-24D510NA15 , NS-24E200NA14 , NS-24E40SNA14 , NS-24ED200NA14 , NS-24ED310NA15 , NS-28D310NA15 , NS-32DD310NA15 , NS32DD310NA15 , NS-32D420NA16 NS-32D420MX16 Insignia NS15 NS-15 LCD Monitor, AOYUAN Model AY060A-ZF122 Fit Insignia TV Adapter Power Cord
  • You will get the best service, the most trusted products. If you have any questions, you can contact us by email. And we offer 30 Days Money Back Guarantee and 12 Months product warranty.
SaleRank No. #5
Belker 30W Universal 3V 4.5V 5V 6V 7.5V 9V 12V AC DC Adapter Power Supply for LED Light Strip Router Speaker Smart Phone Tablet Kindle and Echo Dot TV Box 0.5A 1A 1.5A 2A 2000mA Amp - with 5V 2A USB
  • Multi-voltage AC adapter - AC Input: 100-240V 1A 50/60Hz. DC Output: 3V 4.5V 5V 6V 7.5V 9V 12V 0-2A 24W Max. USB Port Output: 5V 0-2.4A 12W Max.
  • Multi-functional AC/DC adapter - This ac adapter is with replaceable tips and a 5V 2.4A USB charging port. It fits most of AC/DC home appliances like Tablet PC, Scales, Routers, Speakers, LED Strip Lights, CCTV camera system, USB Charging Camera, TV box, wireless receivers, printers, game consoles, security product, digital product, GPS, CD player, rowing machine, smart phone and more 5V USB devices.
  • Replacement AC power adapter - It is perfect emergency standby power adapter, you can converts to different output voltage with ease. It can replace for 3 4.5 5 6 7.5 9 12 volts 50ma 100ma 150ma 200ma 300ma 400ma 500ma 600ma 700ma 800ma 900ma 1000ma 1500ma 2000ma amps AC adapters.
  • Important Note - The DC output polarity is centre Positive[+], outer Negative[-]. Please make sure it is exactly same with your device's polarity before bidding. If your device is with centre negative[-] polarity, please use it with Belker polarity reversed cable together. Search "B07PMHMPMP" to find the cable on Amazon.
  • What You Get - Universal AC Adapter, DC plugs, User Guide, 12-month worry-free warranty and friendly customer service.
Rank No. #6
MAGIPEA for Insignia 12V LED HDTV HD TV DVD Power Cord Charger Replacement Adapter for 19” 20” 24” 28” 32” Power Supply, 12V, AC, DC, 8.5Ft.
  • 【Reference Compatible Models Compatibility】 - Insignia 19" 20" 24" 28" 32" LED HDTV/DVD MODELS: NS-19E310A13 , NS19E310NA15 , NS-19E310NA15 , NS-19E310NA15 , NS-20ED310NA15 , NS-24D510NA15 , NS-24E200NA14 , NS-24E40SNA14 , NS-24ED200NA14 , NS-24ED310NA15 , NS-28D310NA15 , NS-32DD310NA15 , NS32DD310NA15 , NS-32D420NA16 NS-32D420MX16 , AOYUAN Model AY060A-ZF122 , Insignia NS15 NS-15 LCD Monitor, AOYUAN Model AY060A-ZF122 Fit Insignia TV.
  • 【Extended Long Cord】 – With 8.5 Ft cord in Length, you don’t have to worry the wall plug is hard to reach. It’s much convenient for you to reach anywhere in your house.
  • 【Wide Range Compatible Power Supply】 - Input AC100-240V ; Output DC 11V -13V 4A-6A.
  • 【Durable Design】 - Design with overcharge module, providing a safe and durable power charger for your devices.
Rank No. #7
Von Duprin PS904-4R-FA Power Supply, 12V/4A-24V/2A, Steel
  • Product Type: Mechanical Components
  • Package Quantity: 1
  • Package Dimensions: 12.4 cms (L) x 32.8 cms (W) x 37.1 cms (H)
  • Country Of Origin: Mexico
Rank No. #8
SIZHENG DC 12V 1A Power Supply Adapter 2.4W Audio Pickup Plug Power Converter AC 100-240V to DC 12V Transformers for CCTV Microphone and More
  • △ 100-240V AC input 50/60HZ, DC 12V 1Amp output, 2.4 Watt wattage.
  • △ The circuit board has over-voltage, over-current and short circuit protection functions.
  • △ Convert 100-240V AC to 12V DC, widely use for routers, ADSL Cats, switch, security camera, Audio/Video power supply.
  • △ Please contact us for solution if you have any quality problems.
Rank No. #9
Yustda 4-Pin 12V AC/DC Adapter for 3M Touch Systems Microtouch M170 M 170 11-91371-117 17" Micro Touch Touchscreen LCD Monitor # ZF120A-1203500 ZF120A1203500 12VDC 3.5A -4A Switching Power Supply
  • World Wide Input Voltage 100-240VAC 50/60Hz.
  • Replacement AC Adapter/Charger ,100% Compatible with the device model listed.
  • Charger/Adapter has total 10 Ft Long power cord.
  • Safety Features: Over current protection; Total power protection; Over voltage protection; Short Circuit Protection.
  • Manufactured with the highest quality materials. Certification: FCC, CE and RoHS.
SaleRank No. #10
12V 4A Power Supply Cord Charger for Microsoft Surface Pro 3 Docking Station, Windows Laptop Tablet Dock AC Adapter Transformer Model 1627 1664
  • INPUT: 100-240V ~ 1.3A 50/60Hz (for worldwide use). Output: 12V-4A & 5V-1A USB Port; Power: 48W. Connector size: 4.5*3.0mm, provide more stable and stronger power than the original charger
  • Compatible for: Microsoft Surface Pro 3 Docking Station; This power supply has been tested through UL verification
  • Longer Extended Cord: with 5ft DC cord + 6.2ft AC Cord for longer distance use;
  • IC Chip Built-in For Safety: The unit has IC chip built-in to protect your devices so you don’t need to worry about over current, overheating, and overcharging;
  • Warranty: One year replacement warranty!!!

Last update on 2021-04-22 / Affiliate links / Product Titles, Images and Descriptions from Amazon Product Advertising API

Top Rated 12V.4A Power Supply to Buy Now

 

Why You Should Buy Best 12V.4A Power Supply from Amazon

Amazon is not the only store that sell 12V.4A Power Supply. However, there are several compelling reasons why you should buy 12V.4A Power Supply from them, with the suitable Price and Reviews. Here are five:

(1) Amazon Makes Shopping 12V.4A Power Supply Personal

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Before you make a purchase for 12V.4A Power Supply, you want to know that the company you are dealing with is legitimate and that others trust the company enough to make a purchase. You may also like to read what others are saying about the product in the review section. Amazon does all of this quite well.

(4) Amazon Has Great 12V.4A Power Supply Images and Descriptions

In addition to still images, many of Amazon’s 12V.4A Power Supply have videos. This makes it easier for you to see exactly what you are purchasing. Amazon’s 12V.4A Power Supply descriptions are also quite good. In many cases, Amazon repeats the descriptions furnished by the manufacturer. In other cases, they write their own.

(5) The Amazon Site is Easy to Navigate

Navigating the Amazon site is easy. Even though the site is huge, you will not feel overwhelmed when searching for 12V.4A Power Supply. This is partly due to Amazon’s filtering process. You can search for items by brand, price or user rating. You can also search for specific features.

How to Choose the Best 12V.4A Power Supply (with Price and Reviews)

Although most 12V.4A Power Supply are similar, there are several differences worth noting. Here are nine criteria to consider when choosing an 12V.4A Power Supply:

(1) 12V.4A Power Supply Price and Reviews

Although price is not the only factor to consider, it is nevertheless extremely important. The price of an 12V.4A Power Supply should be in line with its value. You can compare 12V.4A Power Supply reviews to make sure you are getting a fair price. This is easy to do on Amazon.

(2) Demand

The demand for a particular 12V.4A Power Supply is a good indication of its ability to perform the functions for which it was designed. If a product has been around for a while and still has a high demand, it is likely a good product.

(3) Material

12V.4A Power Supply materials differ from manufacturer to manufacturer. Consider where and how you will be using your 12V.4A Power Supply to determine if one material would be better than another.

(4) Size

Like most products, 12V.4A Power Supplys come in various sizes. Do you need a large 12V.4A Power Supplyor a small one? Think about where you will use your 12V.4A Power Supply in order to determine the best size. You can also read the customer reviews on Amazon to see what others are saying about the size of the unit they purchased.

(5) Color

12V.4A Power Supplys also come in a variety of colors. Do you need a particular color? You should also consider whether the color of your 12V.4A Power Supply would have any effect on the efficiency of its operation.

(6) Durability

The durability of an 12V.4A Power Supply will be contingent on the materials used as well as the quality of the manufacturing process. Additionally, the type of 12V.4A Power Supply you purchase may affect its durability.

(7) Storage

Will you need to store your 12V.4A Power Supply? If so, you should consider the size and weight of the 12V.4A Power Supplyto make sure that it can be stored properly. Also, give some consideration to the type of climate in which your 12V.4A Power Supply will be stored.

(8) Customer Ratings

Customer rating is one of the best criteria for choosing an 12V.4A Power Supply. It is hard to know exactly how an 12V.4A Power Supply will perform until you get it home and try it out.

(9) Warranty

Make sure the 12V.4A Power Supply you are considering is backed by a good manufacturer’s warranty. If it isn’t, you might be better off with another ones.