Why Not using a Supercapacitorbank

I made a super-capacitor bank for 15V mainly to get crank spare-amps for starting our 2000 CC V-twin engine after the first time my brand new battery did not crank anymore, because of probably a rectifier problem.
I was working with a “Battery-protect-65” of Victron and found out that the crank-amps of the little start engine asks over 250A.
That gave me the idea that my small new Varta Battery of 40Ah has only 330A crank power, which means you can get 330A out of the Battery for a very short period like 2 seconds.( CCA 330A is for max 30seconds )
Cranking more than 2 seconds can ruin your start-engine.
So 330 A is not much extra power - compared to the minimum of 250A - but it works especially with my new Iridium spark plugs and when it is not too cold.
I wanted more Crank- amps in case I had a low battery – one of the main issues in TM - and also a device that could start the engine of another car as a kind of brotherly help, and because of this, it should be always ready to use.
The answer is found in using a DIY super-capacitor bank.

See pictures

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and

[Linked Image]

When you are interested I can make a longer post of this issue.

One ant does not know anything, 2000 are a super-intelligent brain. That's like this helpful forum.