| Brand | CanaKit |
|---|---|
| Item model number | DCAR-RSP-2A5 |
| Item Weight | 0.01 ounces |
| Product Dimensions | 3.75 x 2.75 x 1.25 inches |
| Item Dimensions LxWxH | 3.75 x 2.75 x 1.25 inches |
| Color | black |
| Power Source | Corded Electric |
| 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.
Compare with similar items
This Item  CanaKit 5V 2.5A Raspberry Pi 3 B+ Power Supply/Adapter (UL Listed) |  | ![[5V 3A UL Listed] iUniker Power Supply for Raspberry Pi 3, Power Supply for Raspberry Pi MicroUSB Power Supply with on/Off Switch Compatible with Raspberry Pi 3/ 3b+/ Zero/Zero 2w](https://m.media-amazon.com/images/I/41lYLFAVkjL._AC_.jpg) |  |  |  | |
| Price | $9.95 | $8.99 | $8.99 | $19.99 | $7.99 | $12.00 |
| Delivery | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 | Get it as soon as Friday, May 17 |
| Customer Ratings | ||||||
| Quality of material | ||||||
| Value for money | ||||||
| Sold By | CanaKit | ezfit | iUniker Pi | O.T. US | Amazon.com | ArgonForty SHOP |
| connector type | usb, micro usb | Micro USB | micro usb | Micro USB Type B | USB | Micro USB |
| number of usb ports | 1 | 1 | 1 | 1 | 1 | 1 |
| input voltage | 240 volts | 240 volts | 240 volts | 110 volts | 240 volts | 240 volts |
| connector gender | Male-to-Male | Male-to-Male | Male-to-Male | Male-to-Male | Male-to-Male | Male-to-Male |
| power source | — | Corded Electric | — | — | Corded Electric | AC |
| specification met | ✗ | — | UL | — | — | UL |
| output voltage | 5 volts | 5 volts | 5 volts | 5.1 volts | — | 5.25 volts |
| cable length | 5.0 feet feet | — | — | 150 centimeters centimeters | 500 centimeters centimeters | 100 centimeters centimeters |
| current rating | 0.5 amps, 2.5 amps | 3 amps | 3 amps | 0.5 amps, 2.5 amps | 3 amps | 3 amps |
Reviews with images
IV Curve
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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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.
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 April 28, 2024
Reviewed in the United States on March 22, 2024
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Hasta ahora no he tenido inconvenientes
Reviewed in Mexico on July 28, 2018