Hi, your first sentence is correct. Your second one I would rather say, I expect my cell phone's battery will be fully charged in the morning. Your last one I would say, my cell phone wasn't charged last night (past tense) or my cell phone is not being charged tonight (present tense)

Number 2 is only correct if you mean that your battery will be dead in the morning. i.e. It is charged now, and the charge will last until the morning, after which it will no longer be charged. If you mean it will be fully charged, the preposition you want here is BY.

Hello Sergii! 1. The sentence sounds correct. However, you could maybe use "have" or "had" to indicate whether you're talking in past tense or present tense. For example, I have plugged in my cellphone charger (present tense), I had plugged in my cellphone charger (past tense). 2. A better way of saying this would be "I am expecting my cellphone's battery to be fully charged by morning" 3. My cellphone did not charge last night (past tense). My cellphone was not charging last night (past tense). My cellphone is not charging tonight (present tense). My cellphone will not be charged tonight (future tense). Hope this helps 😊