I'm thinking about purchasing a Raspberry Pi B+ model, and the Raspberry Pi website states that the power supply should output 2 A through a micro- USB supply.
OK, but in terms of voltage, what should it be? Is 5 V suitable? That's what many of the Amazon devices for 2A seem to use.
The power supply should support 5 V. It has not changed (from model B to B+), and it is the default for the micro-USB output.
FAQ: What are the power requirements?
The device is powered by 5 V micro-USB.
The provided output current should range between 700 mA to 2000 mA (2.0 A) depending on the current drain of your plugged-in USB devices.
This holds for every model and revision (A, A+, B, and B+). The Model A needs a bit less current compared to the Model B (about 200 mA) and both +Models (A+, B+) need a bit less current compared to the older versions.
The B+ should be powered by 5 V at 2 A. I have the official PSU, and it is rated at that and runs my Raspberry Pi B+ perfectly.
