The supercapacitor can be used to maintain the ephemeris data and other data required to hot start a GPS receiver. The importance of hot starting a GPS receiver lies in the fact that it is the quickest method to achieve satellite lock providing position, navigation, and timing reference.
Why choose a supercapacitor versus a battery?
Supercapacitors are versatile energy-rich short-term storage mediums finding their way into an increasing number of applications. Supercapacitors are replacing batteries as backup energy sources and power the load if main power supplies fail for a short period. Supercapacitors provide an ideal “set and forget” capability, requiring little or no maintenance. For GPS Source, supercapacitors can eliminate lithium chloride backup batteries, increase space to include advanced technologies, and eliminate monthly battery maintenance for end users. The lithium chloride batteries are not rechargeable and require replacement every few months.
While batteries hold large amounts of power, they can take hours to charge, whereas capacitors can charge instantly, but only store small amounts of power. Supercapacitors bridge this divide by incorporating the best features of batteries and capacitors. Supercapacitors are most useful to bridge power gaps lasting from a few seconds to a few minutes. They are ideal to fulfill a short-term energy need and can be recharged quickly. Moreover, supercapacitors will not overcharge and do not overheat making it an excellent design integration for electronic products by providing short-term power need but lacking the destructive mechanisms of a lithium ion battery.
A capacitor stores energy using a static charge versus a battery that works on an electrochemical reaction. A supercapacitor crosses both technologies by using special electrodes and electrolytes. Supercapacitors excel when it comes to power density as they pack tremendous power— can be charged quickly and release that power in fast bursts of current, faster than a battery. They have an incredibly long cycle life and operate equally well in hot and cold temperatures, unlike batteries. Generally, Supercapacitors do not contain harmful chemicals, whereas a battery wears out quickly as their chemicals lose potency over time.
Supercapacitors can meet the needs of power ride-through applications where the time requirements are in the seconds to minutes range. Supercapacitors offer long life, low maintenance, light weight and environmentally friendly solutions when compared to batteries.