Not too sure of your question. But correct or not will depend on the sentence.
The battery is charged. = correct.
Yes - in America! Don't say it in Australia, where it means something else entirely.
In many respects Wikipedia is an extraordinary reference, but the say 'everything there is correct' is entirely too blanket.
No. The correct way to say that you disagree with something would be "in disagreement."
No, the correct phrasing is "Did you say something?" The word "said" should be changed to "say" to make the question grammatically correct.
no it is not correct to say you are not for sure instead you can say in proper English that you are not sure about something
It would be more normal to say "bored with something"
Yes, it is correct to say that something impacted someone's life. When you say "impacted on someone's life," you are emphasizing the effect that something had on that person's life.
the correct way to say it is both of them cause they both make sense...
You can say feliz groundhog dia!!! it might not be entirely correct but they'll understand what your are saying
Say, "Thank you."
Yes assuming you are about to say a company that does something.
No, it is not correct to say "combine something together with" because the word "combine" already implies bringing things together. You should use "combine something with" instead.