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

4.8 out of 5 stars 3,752 ratings
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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
Minimum Input Voltage 100 Volts

About this item

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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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  • CanaKit 5V 2.5A Raspberry Pi 3 B+ Power Supply/Adapter (UL Listed)
  • +
  • Raspberry Pi 3 b+ Case, iUniker Raspberry Pi 3 Model B+ Transparent Case with Raspberry Pi Heatsink for Raspberry Pi 3B+, 3B
  • +
  • Raspberry Pi 4 Model B 2019 Quad Core 64 Bit WiFi Bluetooth (4GB)
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From the manufacturer

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.

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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

4.8 out of 5 stars
4.8 out of 5
3,752 global ratings

Top reviews from the United States

Reviewed in the United States on July 20, 2020
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9 people found this helpful
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Reviewed in the United States on December 8, 2018
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18 people found this helpful
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Reviewed in the United States on April 4, 2016
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4.0 out of 5 stars IV Curve
By Chris Satterlee on April 4, 2016
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.
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347 people found this helpful
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Reviewed in the United States on May 18, 2018
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22 people found this helpful
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Reviewed in the United States on October 15, 2020
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5.0 out of 5 stars Works great, but is not 5' long
By Mark on October 15, 2020
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.
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5 people found this helpful
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Reviewed in the United States on February 5, 2017
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31 people found this helpful
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Top reviews from other countries

Toshiro Komiyama
4.0 out of 5 stars Todo bien
Reviewed in Mexico on November 9, 2018
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Gabriel Arce
3.0 out of 5 stars Sólo por ser oficial.
Reviewed in Mexico on October 20, 2017
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Cliente de Amazon
5.0 out of 5 stars Todo bien.
Reviewed in Mexico on April 22, 2018
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Cliente de Amazon
5.0 out of 5 stars Hasta ahora no he tenido inconvenientes
Reviewed in Mexico on July 27, 2018
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Ernesto Guevara Gonzaga
5.0 out of 5 stars Cumple con su cometido
Reviewed in Mexico on June 7, 2019
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