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Super capacitor background: supercapacitors, also known as electro chemical double layer
capacitors (ELDC) or ultracapacitors, differ from their chemical
power storage counterparts in that they supply large bursts of
energy and recharge very quickly.
When a burst of energy is needed, the low internal resistance of
the supercapacitor delivers the needed current, whereas the higher
resistance of the chemical battery causes the battery voltage to
collapse. Supercapacitors serve to eliminate the instantaneous
energy demands placed on the battery and this in turn extends
battery run time and prevent declining charge capacity as the
battery ages. Supercapacitors, unlike batteries, are
maintenance-free and operate over a wide temperature range.
Supercapacitors used in conjunction with batteries or other power
sources, like photovoltaic or fuel cells, provide an effective
solution when batteries alone do not meet the performance
objectives. Supercapacitors are also an excellent choice for short
term power back up of seconds or minutes.
Portable applications and digital technology have outpaced
chemical battery technology.
A typical symptom of insufficient battery performance is the
ratio of time the appliance is in use versus the appliance recharge
time. Another nuisance is when the battery has to be replaced
prematurely as it will no longer hold a charge. In these situations,
using batteries in conjunction with Ultracapacitor can often improve
overall system performance and extend battery life.