- Rated Voltage: up to 2.8 V
- High Power Performance (vs. Battery)
- High Energy Performance (vs. Capacitor)
- Wide operating temperature range: -40°C ~ 65°C
- Low internal resistance
- Balancing and Over voltage: Protection of Individual Cell
- Easy build-up design for High voltage module
- Efficient Heat transfer to outside
Many people like to make comparisons between ultracapacitors and rechargable cells. Below are some facts:
|Discharge rate||10-6 ~ 10-3 sec||1 ~ 30 sec||0.3 ~ 4 hrs|
|Charge rate||10-6 ~ 10-3 sec||sec ~ min||0.5 ~ 5 hrs|
|Energy Density (Wh/kg)||<0.1||1 ~ 10c||30 ~ 100|
|Power Density (W/kg)||>10,000||1,000 ~ 2,000||50 ~ 200|
|~ 1.0||0.9 ~ 0.95||0.7 ~ 0.85|
|Cycle life||infinite||>500,000||500 ~ 2,000|
The amount of energy stored in an ultracapacitor can be easily calculated by using following equation:
This can be converted from Farad for Ultracapacitors to Watt-hour unit for conventional batteries by:
Energy (Watt hour) = Energy (Joule) / 3600 (seconds)
LS Mtron recommended to operate ultracapacitors from maximum voltage to half voltage and which utilises ¾ of total stored energy.
Another important distinction between ultracapacitors and batteries is the way the nominal voltage varies during the charge-discharge process which can influence selection and type of external circuitry.
| Capacity of Cell
Battery Units [Wh]
|120 F||98 mWh|
|350 F||286 mWh|
|3000 F||2.45 Wh|
The high content of energy stored by ultracapacitors in comparison to conventional electrolytic capacitor is due to the activated carbon electrode material having extremely high surface area. Additionally there is a very short distance of charge separation in the interface between electrode and electrolyte.
The ultracapacitors high power, long shelf and cycle life performance are due to the energy storage principal differing from batteries. In a battery, energy is stored and released via chemical reaction inside, but this caused electrode material degradation which affects the overall system.
Ultracapacitors use a physical charge separation phenomena between electrode and ions in electrolyte at the interface. Since charge and discharge process are purely physical and highly reversible, Ultracapacitors can release energy much faster (with more power) than a battery that relies on slow chemical reactions and can also be cycled hundreds of thousands of times without deep effect on performance.
Ultracapacitor Cell Construction
Full product details of our range of ultracapacitors can be found on the