Raspberry Pi's don't run on jellybeans and used brake fluid, they need high quality electricity and plenty of it. This power supply has been rigorously tested to ensure it feeds your Pi nothing but the best electrons. While the Pi needs 5VDC, this power supply is slightly over-rated to compensate for the voltage drop from the 4' wire and microUSB connector under load. According to a volt meter it measures 5.1V with no load but don't worry, by the time it gets to your Pi it will be very close to 5V.
It has also been tested for continuous output of 2.5A (done using some really big resistors that we wired up and used as impromptu coffee cup warmer for a few days.)
Need more convincing? This power supply was approved for use by the Raspberry Pi Foundation themselves so you know it's legit (even though it doesn't have a Pi logo on it.)
- Raspberry Pi Model A, Model B, A+, 0, 2, 3, 3+ (all except the Raspberry Pi 4)
- 5.1VDC 2.5A USB Power Supply
- Attached 4' wire terminated to a microUSB connector
- Anything else
- Box: 4.25" x 3" x 1.75"