QUES: Noncompensated conventional ballast L

correct the punctuation.

CORRECTED: Non-compensated conventional ballast (L).

QUES: What is meant by the warning Battery too weak measured values cannot be acquired

correct the punctuation.

CORRECTED: What is meant by the warning "Battery too weak, measured values cannot be acquired"?

QUES: To change your user password as user

correct the punctuation.

CORRECTED:
To change your 'user' password, as $ user :