Starting / electrical problem.

[Maximmm]

Hi everyone.
I have the YY250T. And i run into a problem with it.
Few weeks ago i had a problem to start the scooter at the morning and i heared weared nose of fast klickings from the solenoid, i was sure the battery is dead and i kick start it that day with no problems and went to work. Later that day when i went back home i checked the battery voltage and it shows 8.9v.
I ordered new battery and installed it today, connected all the wires and try to start and same problem again. Checked the battery and it shows 9v.
I'm confused. Is this a voltage leak or the selenoid is bad ?
Any solution ?

Thank you guys.