Capattery Series

Evans Capacitor Company Capattery Series Capacitors

Product Overview

The Capattery is a high-reliability double layer capacitor. It stores an electrostatic charge at the interface between activated carbon and an aqueous electrolyte in the so-called electric double layer. Long life is possible because the energy storage is physical rather than chemical in nature. These features also provide stable performance during extremely high shock loading.

The Capattery improves upon previous double layer capacitors because of its patented Permselective valve, which allows the escape of CO2 generated by all double layer capacitors, while it maintains its sealed construction. Being a capacitor, the Capattery requires a very simple charging circuit. It is leak-proof, exhibits no memory effect, and can deliver currents from microamps to amps. Unlike most batteries, state of charge can be directly measured.

Electrical Specifications

Electrical Specifications

Rated Voltage Range5.5VDC to 16VDC
Capacitance Range0.47F to 1.0F
Life (@85ºC)Standard Series: >100,000 cycles or 25 years
Shock Hardened Series: >24 hours

Mechanical Specifications

Mechanical Specifications

ShockMIL-STD-202 METHOD 213GTested for 1ms at 50g peak
VibrationMIL-STD-202 METHOD 204


I, Letter D
12 sweeps/axis, 12g peak

1.5 hours/axis, 12g rms
Moisture ResistanceMIL-STD-202 METHOD 1066V Polarity
Solderability To ANSI J-STD-002
Operating Temperature Range-55ºC to +85ºC
Storage Temperature Range -62ºC to +95ºC (can be stored up to +85ºC for brief periods of time)

Capacitor Life

Capacitor Life

Since energy is stored physically rather than chemically in the Capattery, extremely long cycle life results. Capatteries do not dry up like electrolytic capacitors, exhibit no discharge memory effect like NiCad batteries and can be charged and discharged indefinitely. 

Shock Hardened Capattery has an unlimited shelf life and limited time on charge (<24hrs). Consult Evans Capacitor Co for your application.

All Capattery capacitors have an unlimited shelf life.

CAD Files

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