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The best way to find the best arduino power supply is by taking a look at what other people are buying and which brands they prefer. You can also take a look at the reviews and ratings of the product.

The following table provides concise information about how to pick a product from online:

  • Consider what you want
  • Find out what other people are buying
  • Look at reviews and ratings
  • Compare prices
  • Beware of scams

Top 10 best arduino power supply Features Overview

Here are the of top 10 arduino power supply we picked and recommend.

1. 9VDC 1A Arduino Compatible Power Supply Adapter 110V AC 5.5 x 2.1mm Tip Positive Part#LJH -186

  • 2-flat-pin plug
  • 110V input voltage / 9VDC 1A output voltage
  • For use with Arduino Uno, Mega and MB102 Power supply boards
  • Connector size: 5.5 x 2.1mm
  • Center or Tip is positive, sleeve is negative

2. UL Listed 9V AC/DC Power Adapter for Arduino/Schwinn Bike A10 A20 A40 220 430 Elliptical Trainer/Crosley Cruiser CR8005A – Center Positive 5.5×2.1m

  • Only Compatible for Listed Models, DOES NOT fits Pedals, Drum, Keyboards, Label makers and other equipment with power ports of negative-tip.
  • Range Compatible: 9V ( 100mA – 1500mA ) / Input: 100~240V / Extended Cord: 200cm ( 6.6ft ).
  • Life Saver: Power supply for Arduino UNO R3 / Elegoo, IEIK UNO R3 / MEGA 2560 / Schwinn A10 A15 A20 A25 A40 103 120 130 220 240 430 9v Schwinn Proform bike, elliptical machine, hybrid trainer / Crosley Cruiser Portable Turntable Record Player CR8005A CR8005A-BK CR8005A-BL CR8005A-GR CR8005A-OR CR8005A-PI. Works with most devices that use a 9V and less than 1500mA of power.
  • Certified Safe: Automatic overload / Thermal cut-off / Short circuit and Over voltage protection.
  • What You Get: 1 Pc Arduino Power Adapter / 12-month warranty and friendly customer service.

3. ALAMSCN 3.3V 5V MB102 Solderless Breadboard Power Supply Module with 9V Battery Clip Power Cable 2.1x 5.5mm Male DC Jack Plug for Arduino (Pack of

  • There is a green LED to indicate the presence of power, and an ON / OFF latching switch to control the power to the board.
  • The input voltage through the barrel socket must be between 6.5 V and 12 V. Hence, if you wish to use it to its maximum capability you will need to remain in that range. This is a non-adjustable fixed power supply model, which is good enough for most applications.
  • Maximum output current to be 700 mA. However, it is probably better to use much lower voltages and current to be on the safe side in case you make a mistake on your breadboard circuit.
  • With 9V battery snap power cable T-type 5.5×2.1mm connector.
  • How to use: This is a plug-in power supply and the headers below the board simply plug-in to the breadboard. Once plugged in, the voltage rails to both sides on the breadboard then provide power. You then use the yellow jumpers to select the voltage levels required. This is a dual output 3.3 V, 5 V regulated board and you can have either voltage on either rail on the breadboard, which is very useful.

4. JOVNO 9V 1A Power Supply Adapter 100-240V AC/DC 9V 800mA 500mA 9W Max Power Converter with 5.5×2.5mm Tip for NES, Arduino, Breast Pump, Speaks, Rou

  • 【Power Specs】 Input: AC 100V-240V 50/60Hz; Output: DC 9V, 1A 9W Max; DC plug size is 5.5mm x 2.5mm. Compatible with 5.5mmx2.1mm. Polarity is inside positive “+”, outside negative”-“.
  • 【Wide Application】 Widely used to drive NES, Arduino, M Breast Pump 9207010, Wifi IP Home Camera, Bluetooth Speaker, DVR NVR CCTV Security Camera System, portable CD player, Wireless Router, LED light, water purifier, DC motor and other 9V devices less than 9W.
  • 【Universal Adapter】 Works well with most of devices that draws less than [email protected], such as 150mA 250mA 300mA 450mA 500mA 650mA 800mA 850mA 1A. We recommend to use less than 80% of the full load. DO NOT OVERLOAD!
  • 【Safety Features】 Certified by FCC, CE, RoHS, CCC. Built in automatic over-voltage protection, over-current protection, over-temperature protection, short circuit protection. Fire retardant shell. Safe to use.
  • 【Support & Reassurance】Buy with confidence and 24-hours online service, 45 days money back guarantee and 12 months warranty, lifetime technical support. Please feel free to contact with us for any questions.

5. ELEGOO AC 100V-240V Converter Adapter DC 9V 1A Power Supply US Plug 5.5mm x 2.5mm 1000mA Power Adapter Wall Charger Adapter Compatible with Arduino

  • Fully US Regulated Power Supply Adapter.
  • Center or Tip is positive, sleeve is negative. Automatically converts international voltages, up to 1A output.
  • Compatibility with: Arduino UNO R3 Mega 2560 1280, Arduino CCTV. Works with devices require 9V and 1000mA of DC power and physically fits the plug. Please make sure the connector size 5.5×2.1mm can fit your applications before purchase.
  • DOES NOT fits Effects Pedals, Drum, DJ controller, Piano keyboards, Label makers and other equipment with power ports of negative-tip. Not applicable for devices that withstand minimal electromagnetic interference, such as radio set.

6. MELIFE 5pcs MB102 3.3V/5V Breadboard Power Supply Module for Arduino Board Solderless Breadboard

  • PERFECT FIT FOR ARDUINO: Fits perfectly on arduino board solderless breadboard and provides both 3.3V and 5V
  • MULTIPLE POWER SUPPLY: The module provides dual 5 V and 3.3 V power rails, and has a multi-purpose female USB socket, convenient external lead use
  • OUTPUT VOLTAGE SWITCHABLE: Fluctuation two road independent control, jumper pins are utilised for selecting the voltage levels on each side of the breadboard power rails. You can choose between 5V, OFF, and 3.3V
  • SHORT CIRCUIT ALARM: The green power LED is connected to the output rail, when you applied a short to either of the voltage rails it would go out, this is an excellent indicator of a short in the power
  • Uses a USB Type output port for control board and a voltage regulator chip 1117-5.0V/1117-3.3V

7. 9V 1.5A Power Adapter, for Arduino UNO R3, Router, Kitchen Scale, Schwinn Bike, Exercise Elliptical Recumbent Upright Trainer, Crosley Cruiser Reco

  • RANGE COMPATIBLE: Output: DC 9V 0.5-1.5A; Input: AC 100-240V (worldwide input voltage)
  • Connector Size: 5.5 x 2.1 mm Barrel Connector, center positive ( Does not fits pedals, keyboards with power ports of negative-tip )
  • EXTENDED CORD: 6feet (1.8m) cord length for ample reach from your devices to wall outlet
  • SAFE AND STABILITY: UL Listed, over-load / over-voltage / over-temperature / short-circuit protection; offering complete protection for you and your devices
  • WIDE USES: Works with Arduino boards (UNO R3/ Elegoo UNO R3/ IEIK UNO R3, MEGA 2560, Duemilanove), wireless router, children’s vehicle charging, alarm, electronic kitchen scale, Schwinn Proform bike, elliptical machine, hybrid trainer, Crosley Cruiser Portable Turntable Record Player and other devices that use a 9V and less than 1500map of power

8. NorthPada Power Supply 9V 2A Charger AC Adapter for Arduino UNO R3 Crosley Cruiser Portable Turntable Record Player Schwinn Elliptical Exercise Bik

  • Brand: NorthPada, UL Listed,Output: DC 9V 2000mA/2A, Center Positive AC Adapter, with extra long cord at 6 feet
  • For Arduino UNO R3 REV 3 / Mega 2560 R3 / Elegoo UNO R3 / IEIK UNO R3 / all 9v Medela Pump In Style Advanced Breastpumps Manufactured January 2008 and after
  • Fit Crosley Cruiser Portable Turntable Record Player, 9V Crosley Cruiser Portable Turntable Record Player CR8005A CR8005A-BK CR8005A-BL CR8005A-GR CR8005A-OR CR8005A-PI CR8005A-TP CR8005A-TU CR8005A-TW
  • For 9V Schwinn proform bike A10 A15 A20 A25 A40 101 102 103 112 113 120 122 123 126 130 131 140 150 170 201 202 203 206 212 213 220 222 223 226 227P 230 231 240 270 460 004-4150
  • 30 Days Money back and 2 Years Exchange

9. Magic&shell 2PCS MB102 Breadboard Power Supply Module and 9v Battery Clip with 2.1mm X 5.5mm Male DC Plug Assortment Kit for Arduino

  • Product Name:Breadboard Power Supply Module and Battery Clip.
  • BoardModel: MB102. Output Voltage: 3.3v, 5V switchable.Maximum Output Current: less than 700mA.Input Voltage: 6.5-12v (dc) or USB power supply.
  • Fluctuation two road independent control, can switch over to 0 V, 3.3 V, 5 V.
  • Cable length:6Inches.Package :?2PCS MB102 Prototype Board Breadboard and 2PCS Battery Clip.
  • This kit is a good power supply module for Arduino Raspberry Pi.

10. 5pack 9v Battery Clip with 2.1mm X 5.5mm Male DC Plug for Arduino by Corpco

  • Plug Type: 2.1mm x 5.5mm Male to 9V Battery Clip
  • Cable length:6 inches
  • Great to use for LED strip light or arduino
  • Package contains 5 pcs 9v Battery Clips (9V battery is not included)
  • Arduino and Battery shown for example only


There is a myriad of online stores out there, and it is impossible for one to compare the different arduino power supply as well as their prices since not all websites offer them. Online shoppers often turn to reviews and customer feedback for help, but even these are unreliable sources. Sometimes people post negative reviews just to be spiteful or angry.

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