Why did your new battery die on 92 Lexus ls400?

It is impossible for a new, properly installed and functional battery in a 1992 Lexus LS400 to suddenly die without an underlying root cause. There must be other circumstances or factors beyond this simple statement that led to the battery failure, and further analysis and diagnosis would be necessary to determine the reason behind the dead battery. It is suggested to conduct additional inspection and troubleshooting in order to accurately explain why the new battery failed. Some common scenarios to investigate may include faulty charging system components, electrical component defects, excessive parasitic power drain, incorrect maintenance procedures, extreme usage/weather conditions, etc.