Hi, everyone.
Have check the charging again with a new rectifier. Notice the result i have the last time is correct just a bit more.
That is when rev at 2500 rpm measure at the battery (+) and (-) read 14.4 VDC. And rev at 5000 rpm it read about 13.8 VDC to 14.0 VDC.
So correct me if i am wrong, the higher the rev the less will be the charge, of cause there is a minium amount it should charge. Have check with two more bike and even my small little van also the same (rev a bit more then 5000 rpm, it have the same charge as 5000 rpm.)

Thank you.