Can you fix a battery that fails a load test?

I'm curious to know, can a battery that has failed a load test actually be fixed? I understand that a load test is a crucial step in determining a battery's health and performance, and if it fails, it typically indicates that there's an issue with the battery's ability to hold and deliver power. But is there any chance that the issue can be resolved through repair or reconditioning, or is it a case where the battery simply needs to be replaced? I'd appreciate your thoughts on this matter.