Ignoring the long term discharge problems, just compare the discharge curves of a capacitor and a battery, soon shows why capacitors aren't much use for replacing batteries.
Exactly
I also looked at them with my little project.....No go.
A battery is a battery. And a cap is a cap. Forever.
Batteries have the ability to provide high current for a short while....and then recover and continue providing lesser power for a long period of time.
A Cap always gives it's all when you want it. After that it has no more to give. Absolutely no staying power whatever or capacity.
The Supercap thing interests me though. Many people around the World (especially Manufacturers) claim eventually it will replace the conventional battery.
I really think not. Until a Cap has reserve capacity.....and where will it get that from.....a Cap is a Cap. No matter how many Amps it can do for a split second or even a few Seconds...after that it has nothing left. It is a just a Cap after all.
Picture this: A huge vehicle with this massive engine that has it's starter motor powered by this amazing new Technology called the SuperCap. Before the same vehicle used normal Lead Acid batteries. Call it 500kg battery weight. And it always started.
Enter SuperCap. Weighs nothing. Board is very small and light. People are amazed this little board weighing next to nothing can do the job of the 500kg replacement.
Operator pushes start button. Split second of hectic energy given to the main motor via the starter motor. Motor does not start....
No such thing as a second chance. Cap bank has utilized all it's energy...no reserve.
I hope the Companies promoting/manufacturing SuperCaps are responsible and don't try and fool people. I shall be watching closely.
Regards,
tvtech