2017 Nissan Armada

I posted in here last week about my car dying. After about 7 hours, it randomly decided to start and things have been good since. Then last night it did the same thing, only this time it wasn’t starting at all and the battery voltage was going lower each time I put a Noco boost on it.

I took out the battery and took it in to the store where they tested it. They originally said it was good but needed a charge. They called a few minutes later and said it was bad and they’d swap it under warranty.

We put the new battery in and nothing- exact same situation. The car scanner was repeatedly reading the same battery levels as the old battery.

Again, randomly, about 1.5 hours later it finally started and shows higher voltage. But, the voltage is all over the place while in park, idling. Is this normal?

This all started in 2021. We had never had battery issues until one kid left lights on. My car died and a friend jumped it. He reversed the polarity and they caught fire. It blew my amp.

Ever since then, car batteries only last a year at most. The first one was only 6 months. 

I’m convinced that did something to the car and it’s draining the batteries and killing them quickly.

Any advice? 

Batteries repeatedly dying