12VDC, 2 Amp, power supply with center positive polarity for general project use.
High quality switching 'wall wart' AC to DC 5V 2A wall power supply manufactured specifically for Spark Fun Electronics.
This switching regulator lets you power circuits with higher and lower than the voltage of your power source!
CR1225 12mm 47mAh coin cell batteries. Perfect small battery for miniature sensor node applications.
This is a 9V battery pack with on/off switch and a 2.1mm barrel plug, you get both parts and will have to solder them together. Use this to battery-power your Arduino (or other electronic projects).
This is a really nice power supply. It's a switching DC supply so its small and light and efficient. It is thin so it fits in power strips without blocking other outlets.