|Item model number||DCAR-RSP-2A5|
|Item Weight||4 ounces|
|Product Dimensions||3.8 x 2.8 x 1.2 inches|
|Item Dimensions L x W x H||3.75 x 2.75 x 1.25 inches|
CanaKit 5V 2.5A Raspberry Pi 3 Power Supply / Adapter / Charger (UL Listed)
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- Tested with all versions of the Raspberry Pi including the Pi 2 and Pi 3
- UL Listed
- 5 Feet cord length
- Micro USB plug
- Output 5V DC 2.5A Regulated Input 100V to 240V AC
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This item CanaKit 5V 2.5A Raspberry Pi 3 Power Supply / Adapter / Charger (UL Listed)
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|Item Dimensions||2.75 x 3.75 x 1.25 in||3.5 x 3.5 x 0.7 in||5.35 x 7.4 x 1.55 in||3 x 5 x 1 in||1.97 x 5.12 x 3.15 in|
|Item Weight||4 ounces||0.32 ounces||0.62 lb||3 ounces||4 ounces|
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.
Top customer reviews
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.
Down to two stars. One of them is causing the yellow lightening bolt to appear on screen on my Pis. This means it's browning out. Testing it on my old first gen Model B with LibreElec on it, it is causing pretty severe visual distortions (green lines, audio popping sounds). 2.5A... I doubt that now. Highly doubt that. I will be looking for another brand when I buy my next power adapter.
I have ordered a total of three of these now. I do have to bump the rating down to 4 stars seeing as number 3 works really intermittently. As in it does not work most of the time. A replacement is on its way for that one.
Works great, overall cord length is good. Output is amazing. When I got my first Raspberry Pi Model B, the best thing I could find at the time was an EasyAcc 5v 2a charger. It's been chugging along great and is still powering my old Model B. Now though this CanaKit 5v 2.5a costs about the same and provides better amperage for the same price. It was an obvious choice to go with for by Pi 2. Been constantly powering my Pi 2 for months with it now.
It works well for my RPI3 (I'm running RetroPie on it). Earlier, I was using a stopgap "phone charger + micro USB cable" solution, but I'd see the rgb color square in one corner of the screen (indicating inadequate power). That problem is now gone.
The plug on this thing fits the micro-USB socket on my RPI3 securely. The power cord could be a bit longer, but I can't justify deducting a star for that. I have not measured its output to verify whether it actually outputs 2.5A (or whether at precisely 5V), but the RPI3 seems to be happy, so I'm happy.
I purchased this power adapter for a Pi i bought that did not have a power adapter.
I looked at others but went with this one with the proper Voltage and Current 5V 2.5A Plus this has the filter.