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CanaKit 5V 2.5A Raspberry Pi 3 B+ Power Supply/Adapter (UL Listed)

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3,620 ratings

| 59 answered questions

Amazon's Choice in Computer Power Supplies by CanaKit

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Brand	CanaKit
Connector Type	Micro_usb
Wattage	30 watts
Item Dimensions LxWxH	3.75 x 2.75 x 1.25 inches
Item Weight	0.25 Pounds
Minimum Input Voltage	100 Volts

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Tested with all versions of the Raspberry Pi including the Pi 2, Pi 3 and Pi 3 B+
UL Listed
5-feet cable with integrated noise filter
Micro USB plug
Output: 5V DC / 2.5A Regulated Input: 100 - 240VAC

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From the manufacturer

CanaKit 5V 2.5A Raspberry Pi 3 Power Supply / Adapter / Charger

The CanaKit 2.5A Raspberry Pi power supply differs from typical standard 5V USB power supplies in the market in that it can deliver a full 2.5A and still output a voltage well within the USB minimum voltage specifications. This adapter has been incorporated as an inline noise filter for highest stability and reliable operation.

The power supply still has about 0.5A of output power to spare, so even at the maximum current supported by the Raspberry Pi 3, the power supply is not at it's absolute maximum. It is also ideal for use by anyone over-clocking the Raspberry Pi which causes higher power requirements that a lower power adapter may not be able to supply. With this power supply, you can power the Raspberry Pi 3 at full load as well as up to 1.2A across the four USB ports.

This adapter has been specially designed and tested for the new Raspberry Pi 3.

		LoveRPi Certfied MicroUSB 5.25V 2.5A Power Supply with Power Switch and Status LED for Raspberry Pi	[17.5W 5V 3.5A] Raspberry Pi 4 Power Supply, iUniker 17.5W USB C Power Supply with ON/Off Switch 5V 3.5A Raspberry Pi Power Supply for Raspberry Pi 4 Model B 8GB/4GB/2GB/1GB (UL Listed)	Pastall Raspberry Pi 4B Power Supply 5.1V 3A (USB-C) Power Supply Adapter with ON/Off Switch

Customer Rating	(3620)	(128)	(8)	(73)
Price	$9.95	$9.99	$9.99	$9.89
Shipping	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime	FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
Sold By	CanaKit	LoveRPi	iUniker Pi	PASTALL
Item Dimensions	3.75 x 2.75 x 1.25 inches	3 x 3 x 1 inches	3.15 x 1.57 x 0.79 inches	—
Item Weight	4.00 ounces	2.40 ounces	—	4.30 ounces

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Product description

2.5A is now a requirement for the Raspberry Pi 3. The CanaKit 2.5A Raspberry Pi power supply / adapter has been specially designed and tested for the new Raspberry Pi 3 and incorporates an inline noise filter for highest stability and reliable operation.

This power supply differs from typical standard 5V USB power supplies in the market in that it can deliver a full 2.5A and still output a voltage well within the USB minimum voltage specifications. Standard 5V USB power supplies in the market have a high voltage drop when the full current is drawn from them which may cause the Raspberry Pi to reboot unexpectedly.

With this power supply, you can power the Raspberry Pi 3 at full load as well as up to 1.2A across the four USB ports. The power supply still has about 0.5A of output power to spare, so even at the maximum current supported by the Raspberry Pi 3, the power supply is not at its absolute maximum.

It is also ideal for use by anyone over-clocking the Raspberry Pi which causes higher power requirements that a lower power adapter may not be able to supply.

Product information

Technical Details

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Other Technical Details

Brand

‎CanaKit

Item model number

‎DCAR-RSP-2A5

Item Weight

‎4 ounces

Product Dimensions

‎3.75 x 2.75 x 1.25 inches

Item Dimensions LxWxH

‎3.75 x 2.75 x 1.25 inches

Manufacturer

‎Cana Kit Corporation

ASIN

‎B00MARDJZ4

Is Discontinued By Manufacturer

‎No

Date First Available

‎July 31, 2014

Additional Information

Customer Reviews

3,620 ratings

4.8 out of 5 stars

Best Sellers Rank

#7 in Computer Power Supplies

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Product Warranty: For warranty information about this product, please click here

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Customer reviews

5 star		85%
4 star		10%
3 star		3%
2 star		1%
1 star		1%

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Top reviews from the United States

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Sam

Definitely NOT low noise, nor filtered

Reviewed in the United States on May 18, 2018

Verified Purchase

I purchased this power supply because it purported to have filtering and be "low noise" because I needed it for an audio application (an Echo Dot connected to high quality external speakers). It is definitely NOT low noise: you can hear faint 60 Hz harmonics through the speakers (which points to inadequate filtering on the Echo Dot, too, frankly).

I spent a lot of time making sure the 60 Hz hum wasn't coming from the 3.5 mm cord itself. (The hum is greatly reduced, though not eliminated, if I use the USB power supply that came with my tablet.)

Disappointed with the lack of quality on this power supply and failure to meet its marketing specs.

21 people found this helpful

Helpful

Nicholas

Yellow Lightning Bolt with Raspberry Pi 3b+

Reviewed in the United States on December 8, 2018

Verified Purchase

Got a few of these while building some RetroPies for family for Christmas. I experienced undervoltage warnings with all of them. Unfortunately this item is nonreturnable through amazon, so I am stuck with them. I guess I can use them to charge an android phone or an xbox controller. But they certainly are not good for the Raspberry Pi 3b+ How these rated 4.5 out of 5 stars is beyond me.

Update: Although Canakit did get back to me and stated that these power supplies can have issues with certain cases made with cheap parts, I used these to power the RetroFlag NESPi case, which I believe uses quality parts. The canakit supply did work with another case that did not use buttons, but still experienced low voltage warnings when I had an xbox controller plugged into it.

In the end, I would have updated my review with 3 stars, if it weren't for the no returns policy. I'm still stuck with these. If you have a NESPi case, get a 3 amp 5.25 volt power supply. That worked perfectly with no voltage warnings.

16 people found this helpful

Helpful

Chris Satterlee

IV Curve

Reviewed in the United States on April 4, 2016

Verified Purchase

The attached image shows measured IV curves for this power supply compared to a 2.0A power supply (Kootek). I generated these with a RPi-based IV curve tracer that I built for solar panels (search for "IV Swinger" on YouTube and/or GitHub if you're interested in knowing more about it). It's not intended for such small voltages, but it worked pretty well.

The IV curves show the current (I) and voltage (V) for different resistances (R). This tells the story about how the supply delivers power for different loads (power = I * V).

You can see that both supplies have an open-circuit voltage of 5.3V. That is the lower rightmost point. R = ∞Ω, I = 0A, P = 0W.

The upper left points of each curve are the closest to R = 0 (short circuit) that we can measure (R = 0.94Ω due to wiring resistance). You can see that the Kootek delivers just about 3A of current and the Canakit delivers about 3.8A. But at this point both are way below 5V (below 3V, in fact.).

An interesting point is where the curves cross their rated current values. The Kootek 2.0A supply crosses 2.0A at about 4.6V (2.0*4.6 = 9.2W). The Canakit 2.5A supply crosses 2.5A at about 4.5V (2.5*4.5 = 11.25W). Both of these are well below 5V. Probably high enough that the RPi won't crash, but cutting it close.

Another interesting point is where the curves cross 5.0V. The Kootek 2.0A supply crosses 5.0V at about 0.8A (0.8*5.0 = 4.0W). The Canakit 2.5A supply crosses 5.0V at about 1.0A (1.0*5.0 = 5.0W).

People who are claiming that this supply doesn't deliver 2.5A are correct - if they are expecting it to deliver 2.5A at 5.0V. But what is important is whether the supply is sufficient for the RPi 3. All I can say for sure is that it does deliver proportionally more power than a 2.0A-rated power supply that has worked fine for me with the Gen 1 RPi B+. For that reason, I'm giving it four stars.

For anyone with specific voltage requirements at the rated (or other) current, you can read the values off the IV curve in my attachment.

344 people found this helpful

Helpful

Amazon Customer

It's a fine power supply but the warnings are shady as hell

Reviewed in the United States on July 20, 2020

Verified Purchase

This thing works, and supplies enough current to run my PiHole on a 2B+. The problem is that the box has a shady-as-fuck warning on it, saying that if your RPi has the lightning bolt symbol, it's a problem with your Pi and not the power supply. This is false. The lightning bolt symbol means the Pi is not getting enough power, period. That the manufacturer feels the need to hide potentially faulty products behind a false warning, telling you that it's not the power supply but rather an incompatible OS, is shady at best, dishonest and fraudulent at worst. If you buy one of these and still get a lightning bolt symbol, return it and don't look back.

7 people found this helpful

Helpful

Amazon Customer

Failed after only 1 day, and not eligible for return. Buyer beware!

Reviewed in the United States on February 5, 2017

Verified Purchase

Throwing my name into the bucket for failed power supplies. Bought this along with a RBP 3B, and after only a single day the power supply failed. Plugging the Pi into my Samsung phone charger boots up just fine, but no red LED or heat at all with this power supply.

Unfortunately, I simply looked at the average rating and number of reviews, without taking the time to look at all of the 1 star reviews mentioning how often these fail. Also, Amazon buyers beware: This item IS NOT ELIGIBLE FOR RETURN. So I'm stuck with a worthless paperweight.

31 people found this helpful

Helpful

J Pass

Not the proper voltage for Raspberrypi

Reviewed in the United States on May 31, 2017

Verified Purchase

puts out less than 4.6volts. Not a 5 volt supply you can use on a Raspberrypi, especially the 3.

22 people found this helpful

Helpful

Mark

Works great, but is not 5' long

Reviewed in the United States on October 15, 2020

Verified Purchase

While this cable does its job to power a Pi 3, the claim of it being 5' long is simply not true. The actual cable itself measures only 4' 7", while the entire cable + power supply measures 4' 10". Keep this in mind if you're planning on using it for a certain distance from your outlet.

Other than this, this power supply appears to be the ONLY one that does not give the dreaded "low voltage" warning for the Raspberry Pi 3 B+. I have tried 2 other types, and both of the others gave the warning - this one did not.

4 people found this helpful

Helpful

Top reviews from other countries

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Toshiro Komiyama

Todo bien

Reviewed in Mexico on November 9, 2018

Verified Purchase

El cable no es la gran cosa, lso materiales son normales y el desempeño, de a cuerdo a lo esperado, la parte imoortante a resaltar es que funciona correctamente el diapositivo, es decir, el raspberry tequiere de este voltaje para operar de manera correcta; y eso es lo que se obtiene. Me parece un poco costoso para la naturaleza y uso del accesorio, sin embargo comprendo que cumple unrequerimiento por demás específico. Llegó en tiempo y forma, Amazon Prime siempre ha sido confiable.

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Gabriel Arce

Sólo por ser oficial.

Reviewed in Mexico on October 20, 2017

Verified Purchase

Adquirí este adaptador solamente por que es el oficial para la Raspberry Pi, aunque yo lo uso en una tarjeta Tinker de Asus que en teoría consume un poco más de energía pues reproduce vídeo en 4K... sin embargo para el precio se me hace exageradamente alto para la calidad del producto que aunque es buena no es excepcional y al parecer solo por ser producto oficial es caro... eso sí, hasta ahora no me ha dado ningún problema con apagones o sobrecalentamiento. Solamente faltaría algún tipo de switch o botón de encendido y apagado pues resulta incomodo tener que desconectarlo de la clavija eléctrica o de la carcasa de la tarjeta para poder encender la Raspberry o la Tinker de Asus.

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Cliente de Amazon

Todo bien.

Reviewed in Mexico on April 22, 2018

Verified Purchase

Para mi fue el adecuado, se dice que se puede utilizar cualquiera hasta el de un teléfono celular, mejor utilizar uno propio para la Pi.

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Cliente de Amazon

Hasta ahora no he tenido inconvenientes

Reviewed in Mexico on July 27, 2018

Verified Purchase

Realmente no hay mucho que decir, cumple su función, a penas lo he tenido por una semana y en ese tiempo no he notado que se sobrecaliente.