|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)
|Price:||$9.99 & FREE Shipping on orders over $25. Details|
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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)
|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Item Dimensions||2.75 x 3.75 x 1.25 in||3.5 x 3.5 x 0.7 in||3 x 5 x 1 in||5.35 x 7.4 x 1.55 in|
|Item Weight||4 ounces||0.32 ounces||3 ounces||0.62 lb|
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.
Harold in Grants Pass, OR W2HR IRLP 3756
This isn't the best of the best that can be bought as far as materials go. Though from what I have read some of the choices were better then I can understand. As I am not a professional in any way when it comes to electrical components. It does work though, and I rather have that over fancy looking expensive non-functional any day.
I have a raspberry pi 2b and 3b and the two these adapters I bought are powering them just fine. There have been no issues that are commonly associated with poor power and the Raspberry. Considering that the electrical lines in this house are rather old and not up to snuff that means a lot to me.
Works great. If you are worried about the horrible reviews you read on this product it might be worth noting that even the best computer equipment have their share of factory rejects that somehow made it past the vetting process. This product actually seems to have fewer of them then normal if the reviews are any indication.
It supplies my Pi 2 with very consistent power, unlike when using ordinary phone chargers. Not much else to say, it's a standard USB micro power supply, just designed around the needs of something that doesn't have a battery in it and is less tolerable of lower/intermittent power levels.
After having some bad experiences with some cheaper power supplies, I now go with these guys because I know that's a non-issue.
Most recent customer reviews
It has regulatory approval (UL, etc...Read more