Technical FAQs 4

Should a supercapacitor be connected in series?

For applications where the supercapacitor needs to be charged to more than 2.5V or 2.7V, engineers are forced to connect multiple supercapacitors in series as the standard supercapacitor voltage is rated to 2.7V and they are of lower cost.

How to balance voltage across a supercapacitor?

1. Voltage balancing with balance resistors/passive method The simple and most cost-effective way to balance the voltages across the supercapacitors is to connect resistors of equal value across each supercapacitor. As the resistor is connected permanently across supercapacitors, the power dissipation in the resistors will be continuous.

What happens if a supercapacitor is reversed charged?

If reversed charged after prolonged charging in one direction, the life of the supercapacitor may be shortened. The standard temperature rating for Eaton supercapacitors is –25 °C to +70 °C. Temperature in combination with voltage can affect the lifetime of a supercapacitor.

How many volts can a supercapacitor handle?

Individual supercapacitors are limited to 2.5 V (P Series reaches 5 V using two supercapacitors in series). As many applications require higher voltages, supercapacitors can be configured in series to increase the working voltage.

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