It has to reliably provide 5 volts and at least 700mA (depending on your Pi model and peripherals). The Pi is more sensible to the voltage than the amperage.
The Raspberry Pi forums are filled with "90% of the time it's the power supply not up to the specs, please check the specs" messages for any power and `random crashes´ related problems.
It has to reliably provide 5 volts and at least 700mA (depending on your Pi model and peripherals). The Pi is more sensible to the voltage than the amperage.
See http://elinux.org/RPi_VerifiedPeripherals#Power_adapters for reliable information about that.
The Raspberry Pi forums are filled with "90% of the time it's the power supply not up to the specs, please check the specs" messages for any power and `random crashes´ related problems.