DFRobot Super Capacitor 100F 2.7V - FIT0134 normally open 3V Output high signal easy

3V Output high signal easy to attain docking with the various sorts of circuits

The usual idea is to match the V and equal or beat the mAh when picking the appropriate AC adaptor for your device

Full break out for the base board

providing real-time monitoring

and unlike the UNO

DFRobot Super Capacitor 100F 2.7V - FIT0134 normally open 3V Output high signal easySupercapacitor 100F 2. 7V Massive Energy Storage The 100F 2. 7V Supercapacitor stores an enormous amount of energy compared to regular capacitors enough to power a microcontroller for minutes or even hours after main power is removed. Supercapacitors (also called ultracapacitors) bridge the gap between batteries and capacitors: they charge in seconds, last millions of cycles, and discharge slowly. Supercapacitor vs Battery vs Regular Capacitor