App note from Murata on application of Electrical double layer capacitors (EDLCs). Link here (PDF)
When you consider backup function in your product, Murata’s supercapacitors (also known as EDLCs, Supercaps) are suitable for backup energy device. Murata’s supercapacitors can discharge in high power up to 10A. Therefore they can cover wide range of backup function that is from low power for long time to high power for short time. And you can design Murata’s supercapacitors into your slim devices because of the thin thicknesses. In addition, because supercapacitors have longer cycle life than batteries, they have potential for maintenance free.