VERTER is capable of taking battery voltages from 3-12VDC and then output a handy 5V DC power supply, ... The 5.2V is safe for all 5V-powered electronics like Arduino, ...

If you would like to build your very own benchtop power supply you might be interested in a DIY tutorial for Supplino. A versatile compact Arduino power supply capable of providing from 4 to 40 ...