2008 Acura MDX charging system issues on 2005 Nissan Altima

Thinking of purchasing a 2008 Acura MDX w/Tech package. Reviewed the free Carfax report. In 5 years and 4 months since vehicle was purchased new, the battery has been replaced 4 times, the starter once, and the battery/charging system has been checked four times also. What could be the problem?

Asked by for the 2005 Nissan Altima
Faulty multi-plex , sticking relay are 2 of the more common things to check.