Battery OEM Mazda or Energizer
Funny enough I also have an 18 Elantra and had my battery replaced recently from Costco. What I got was a:
- H6-AGM
- 760/120/70 cold crank amps/reserve capacity/amp hours respectively
Recently i was able to acquire some Japanese Energizer 2300 and 800mAh AA and AAA batteries...from my experience with the Energizers so far they are much much better then any other NiMH battery I've ever used including the Chinese Panasonic NiMH batteries.
I have the Energizer battery in mine. It's worked perfectly so far. The included posts are plug and play with the i3 terminals.
So now I will only use Energizer and Sanyo/Panasonic Eneloop bateries I use these rechargable ones in more expensive devices as they do not leek but have had great success with energizer and their max alkaline bateries both stored and in devices and none have leaked.
The only issues my wife and I have had on our 2021 CX9 and 3GT are dead battery issues. And we had dash and reverse cams fitted, which run and film continuously. If our street is busy, they can run the battery flat within 2 days.
Mazdas OEM batteries are horrible. Had the one that came with the car be weak so Mazda replaced it under warranty. Not even 5 months later that new battery dies, tried jumping and it was completely dead and a jump could not start it.
My'21 CX9 battery is weak, and i can clearly tell its low on voltage after sitting without being started for a week. Never tried playing music on battery though in this car.
Basically many of the oem stock items for mazda are fine, but have notoriously short life expectancy. They have to cut corners somewhere. Battery and tires are the ones I've noticed that are good for a couple years at most before they are ran through. So yeah, I've had a mazda thay needed a new battery after 2 years, one that needed a new battery after 3 years. Just how they go.
Worst part about Mazda cars - battery can silently die on you. Instead once you're ~3 years in you're gambling every time you go for a drive.
OEM batteries are crap, replace it with something better, preferably an EFB one. Also, a healthy battery should withstand that time and even more, so yours was definitely at its end.
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