Speed Triple -12, New Battery But Starting Problem?!

Hello!
Hopefully somebody can give some kind of advice.

My bike is 2012 Speed Triple SE-model. Original and in good condition.
Now it has start made unfrequently odd fault when starting.

1) NORMAL THING WHEN EVERYTHING WORKS FINE
- Turning key and tachometer makes it "dance" from zero to max and back. At the same time fuel pump primes. After that pushing start button and everything works great.

2) THE UNNORMAL SITUATION, APPEARS FROM TIME TO TIME
- Turning key and tachometer makes it "dance" from zero to max and back.
After that fuel pump primes but anything happens when pushing start button. Some kind of electric ticking and rolling sound comes somewhere. It takes maybe 15-20 second and when the sound stops, it starts when pushing start button. Often, when this happens, it also shows empty tank (even if it is full).
It has not left me on the road (yet...)

Any ideas??

Thanks in advance,
Antti

 

Thanks for answer. I know that these bikes are very picky for battery voltage/condition. But I think that it does not make sense that it made this fault today after two hour driving. Voltage should be good then. And the battery is almost new.
I have to measure the voltage from battery.

 

Thanks a lot for quick answers and help.
I made checkings from voltage
- battery 12,56 V
- ignition on 11,96 V
- idling voltage 14,1 V
so my conclusion was that everything were OK on this side.

Next I went through all the wirings under the seat. I tried to clean them and spray electric spray to them. I found that main fuse 30 A near battery was little bit oxidised, I cleaned it carefully.
Now it seems that everything works fine, the problem I mentoned has been gone now...
Feeling very good if this was the solution!!