| Brand | CanaKit |
|---|---|
| Item model number | DCAR-RSP-2A5 |
| Item Weight | 3.84 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 |
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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.
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Top reviews from the United States
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Reviewed in the United States on July 20, 2020
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Reviewed in the United States on December 8, 2018
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Reviewed in the United States on April 4, 2016
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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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.By Chris Satterlee on April 4, 2016
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.
Images in this review
Reviewed in the United States on May 18, 2018
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Reviewed in the United States on October 15, 2020
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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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.By Mark on October 15, 2020
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.
Images in this review
Reviewed in the United States on February 5, 2017
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Top reviews from other countries
Toshiro Komiyama
Todo bien
Reviewed in Mexico on November 9, 2018Verified Purchase
Gabriel Arce
Sólo por ser oficial.
Reviewed in Mexico on October 20, 2017Verified Purchase
Cliente de Amazon
Todo bien.
Reviewed in Mexico on April 22, 2018Verified Purchase
Cliente de Amazon
Hasta ahora no he tenido inconvenientes
Reviewed in Mexico on July 27, 2018Verified Purchase
Ernesto Guevara Gonzaga
Cumple con su cometido
Reviewed in Mexico on June 7, 2019Verified Purchase
