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faqs

Frequently Asked Questions

What are supercapacitors? How do they work?

A supercapacitor is an energy storage medium, just like a battery. The difference is that a supercapacitor stores energy in an electric field, whereas a battery uses a chemical reaction. Supercapacitors have many advantages over batteries, such as safety, long lifetime, higher power, and temperature tolerance, but their energy density is lower compared to batteries. Learn more.

What are SuperBatteries?

Skeleton’s SuperBattery technology is a fast-charging, high power battery technololy, filling the technology gap between supercapacitors and batteries. SuperBatteries offering the ideal combination of energy, power, and safety for <30-minute applications.

What’s the difference between ultracapacitors and supercapacitors?

Can supercapacitors replace batteries?

Supercapacitors and batteries serve different purposes. Supercapacitors excel in short-term applications (typically a few seconds of power) and have a longer lifespan, higher reliability, and efficiency in extreme temperatures. Batteries are more economical for long-term energy needs. See our infographic explaining this the differences and to help you choose the right energy storage technology.

What is ESR and why is important?

ESR (Equivalent Series Resistance) measures the internal resistance of a supercapacitor, and it's crucial as it affects efficiency, heat generation, and voltage drop. Lower ESR means higher efficiency, less heat, and better performance, especially in high-frequency applications. The lower the ESR of a supercapacitor, the better the performance.

How do supercapacitors perform in extreme temperatures?

Supercapacitors are capable of operating normally and maintaining efficiency within a temperature range of -40°C/F to +65°C or 149°F, with minimal to no effect on performance. However, high temperature does impact the lifetime of a supercapacitor cell, module, or system.