Heat does most of the damage. Months of high under-bonnet temperatures, short hops along Jumeirah Beach Road and long spells parked outside wear a Infiniti battery down faster than it would in a cooler climate, and the weakness tends to show up in summer.
Infiniti models share much of their engineering with Nissan and mostly use conventional batteries, with a larger one on the QX80. After a battery change some models need a short idle relearn.
We regularly replace batteries in the QX80, QX60, QX50, and Q50. Whichever Infiniti you drive, the technician tests the old battery first, confirms the correct size and type for your car, then fits and checks the new one while you watch.