This article written by Steven Keeping, published by DigiKey, explains how to use a single 2. 7V supercapacitor on 5V rail combined with a reversible buck/boost voltage converter. . While there are several options, the supercapacitor offers the most compact and energy-dense solution as an energy reservoir when the main supply is interrupted. For example, when there's a mains power outage or when batteries are being swapped out. However, supercapacitors introduce design. . Keep your projects safe from sudden power surges with this DIY Supercapacitor based UPS! An uninterruptible power supply (UPS) for 5V boards like Arduino and Raspberry Pi ensures that your projects will be continuously powered by an external power source at the time of minor power fluctuations or. . The Juice4halt 5V module is a supercapacitor-based energy storage. It contains a bidirectional step-up/step-down converter working as the interface between the stable 5V supply rail and the supercapacitor. Once limited to mission-critical devices, backup power solutions are now in demand for a wide range of electronics. . Check each product page for other buying options. Need help? . 5V 3. 3F Super Capacitor delivers 3. 3f high capacity energy storage in a compactly design 21x12MM/. offering robust pulses power and backup support for space constrained electronics with precise 5v voltages compatibility. Engineered with technology, this low capacitor enables 500,000+ charging. .