This is a high quality switching ‘wall wart’ AC to DC 5V 2000mA USB Micro-B wall power supply manufactured specifically for SparkFun Electronics. These are switch mode power supplies which mean the output is regulated to 5V and the capable output current is much higher (2000mA).
These wall adapters are perfect for supplying power to many single-board computers like the pcDuino or the Raspberry Pi but NOT the Raspberry Pi 3, you will need a higher grade wall adapter for that. Please note, this specific supply (5V/2A) is also FCC/CE certified and works with 100-240VAC inputs.
Note: These wall adapter power supplies may only output 4.5V when pulling a full 2A. Please keep this in mind when making your purchase.
Based on 16 ratings:
1 of 1 found this helpful:
I’ve been running this supply for about 48 hours now, and the only issue I’ve found is that it is emitting a high-pitched whine. I’m assuming this is just some switcher noise, and won’t be an issue. I’ll update if the supply flames out, but so far it’s doing great!
1 of 1 found this helpful:
I bought 4 or 5 of these - they all emit so much high pitch noise that you wont be able to sleep in the room with this power supply plugged in.
Have you contacted our technical support department @ email@example.com ? They may be able to help resolve the issues you’re having with these wall warts.
This product exactly matches the description. Works just fine.
Simple and easy to use. Compact, has enough capacity to power my board and its accessories.
Just what I needed and not a nothing more for a very good price. Lots of package deals out there but all I needed was the power supply (wall wart). They got it to me very quickly. Very good deal. I will be ordering a camera and a couple other goodies here too.
This power block is powering a Pi just fine. It appears to keep the Pi stable and continuously operational.
The 2A powers my Model 2 Pi with enough margin to power the Wifi, mouse, and keyboard.
Works as advertised, powers my Raspberry Pi without any issues.
The first one made an annoying high pitch whine. Sparkfun sent me a new one and the second one did not work.
I’d rather pay more to get a power supply that doesn’t drive everybody in my house nuts.
Bought two of these for my two Raspberry Pi 2s. They work well with no issues. One of these powers both my Raspberry Pi 2 and the 7" touchscreen for the Raspberry Pi A touchscren I also purchased here on Sparkfun.
Some of these have the polarity/color of the cables reversed! If you cut the cable to use them directly as 5V power source without USB plug, be very careful!! I just burned quite some charge controllers until I found this out (remote place, no multimeter). Why on earth would someone have red negative and black positive??
Bought this to power a Pro Mini based project that used a combination 3x 8-pak Lumenatis, analog and digital inputs. Even with LEDs low power, using the wall adapter caused erratic behavior. Oscilloscope showed significant oscillation around 5V. If I use a 9W, 1.5A USB wall adapter (borrowed from my Echo Dot) there are no issues.
I think you may have a defective unit. Please contact our tech support department at techsupport (at) sparkfun (dot) com for assistance with this.
0 of 1 found this helpful:
I plugged this into a Raspberry Pi B+ soon after I received it, and it worked fine.
A couple weeks later, I plugged it in again. No light, no power. Tried several outlets that I know work. Still no light, no power.
I tried a Belkin 5v 2.1A USB power supply with a micro USB cable. That is working great.
So I’m puzzled as to why the supply isn’t working, when it worked out of the box.
Avoid this one it makes a really annoying high pitch noise on the two units I got.
Worked first time with my Raspberry Pi 2B John