"Hermetically sealed Evans Hybrid Capacitor and Capattery devices have
numerous patented features that provide demonstrated advantages over
standard capacitor technologies."
Evans Capacitor - High Energy Density Caps - https://www.evanscap.com/
"Evans maintains the highest levels of quality, and is fully compliant
with ISO 9001 and AS9001 standards." The unique chemistry and
construction provide 5 to 10 times the volumetric energy density of
aluminum electrolytic capacitors.
Technical Papers of Evans Capacitor
The Littlest Big Capacitor - An Evans Hybrid - Presented at the Fifth
International Seminar on Double Layer Capacitors and Similar Energy
Storage Devices, December 4-6, 1995
Capattery - SuperCapacitor - Designed for longer duration power hold-up and memory back-up applications. Full operating temperature range of -55C to 85C
High energy density, up to 3 joules per cc, High reliability, 25 yrs., >1,000,000 cycles
Hybrid capacitors provide very high power and energy from devices much
smaller and lighter than electrically equivalent tantalum wet, tantalum
chip, or aluminum electrolytic capacitors.
Typical applications replace standard military capacitors, or augment
batteries and power supplies where size, weight, reliability and quality
are important factors of component selection.
Evans Capacitor Company
72 Boyd Ave, East Providence RI 02914, USA.
The K2 Series ultracapacitors are a third generation design that provides 2.7 volt operating voltage while improving Maxwell's high performance and high reliability on a high volume manufacturing platform. - https://www.maxwell.com/
K2 Series High Capacity Cells - Maxwell
This type of caps are also an ideal source of back-up power. It can provide extended power availability, allowing critical information and functions to remain available during dips, sags, and outages in a power supply or battery change.
The K2 2.7V series works in tandem with batteries for applications that require both a constant power discharge for continual function and a pulse power for peak loads. In these applications, the ultracapacitors relieve batteries of peak power functions, resulting in extended battery life and a reduction in overall battery size and cost.
Maxwell Technologies, Inc.
3888 Calle Fortunada, San Diego, CA, 92123, USA
They have two types, High Power Density for a large current discharge. High Energy Density for a long backup time. Over a million Charge/Discharge cycles. High Efficiency. Capable of fully discharging to zero volts.
These EDLC supercap have one-tenth of energy, but delivers over 10 times of power due to ultra low ESR. In Comparison with a Battery. A Lifetime of over 500,000 cycles.
