A person that is beating their wife cannot be considered a Christian as they are definitely not Christlike in character. Ephesians 5:25 “Husbands, love your wives, even as Christ also loved the church, and gave himself for it.”
In order to understand the relationship between husband and wife in this situation, we need to consider Scriptures that deal with an unbelieving husband. We have the Scriptures that teach that a woman needs to be submissive to an unbelieving husband. 1 Peter 3:1-2 “Likewise, ye wives, be in subjection to your own husbands; that, if any obey not the word, they also may without the word be won by the conversation of the wives; While they behold your chaste conversation coupled with fear.” This is so that many unbelieving husbands can be won by the actions of their wife. The wife is not to be doing things that displease the husband unless it involves principles as the wife belongs to the Lord first and foremost. Galatians 3:28 “There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus.” Being in subjection is not unconditional in a marriage relationship. 1 Corinthians 7:13-14 “And the woman which hath an husband that believeth not, and if he be pleased to dwell with her, let her not leave him. For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband: else were your children unclean; but now are they holy.” The condition is that if he be pleased to dwell with her. If a husband is beating his wife, it shows that he is not pleased to dwell with her. In that case, she is free to leave. 1 Corinthians 7:15-16 “But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such cases: but God hath called us to peace. For what knowest thou, O wife, whether thou shalt save thy husband? or how knowest thou, O man, whether thou shalt save thy wife?” Some may not depart in the sense of actually leaving but she is not obligated to be tortured by anyone if she can depart. Matthew 10:23 “But when they persecute you in this city, flee ye into another: for verily I say unto you, Ye shall not have gone over the cities of Israel, till the Son of man be come.” This applies equally to spousal persecution that involves physical harm.
Having said all this, I know that some people egg on their spouse kin various ways in order to be looked upon as one who is suffering. Some know his weaknesses and prey on that. Some withhold sexual responses and become frigid and cause problems in that way. There are constant nagging and many other ways to cause turmoil and so what I have said before is not in any way to excuse any of these actions.