Would it be advisable to get the battery replaced if nothing is wrong? Only asking because the 1 currently in my car seems a little underpowered at 480/510 CCA?

or just wait until it's time comes and fit the highest CCA possible?

 

I would say to wait until that time comes - usually as the battery gets weaker, you'll see signs (particularly when starting up/cranking on the 4GS) which will help you know when its time. If you get an OEM battery, the CCA's are in the 500s. Only aftermarket batteries have higher options.

 

Strangely enough, OEM Lexus batteries here in Ontario have 800 CCA ratings, while costco sells a 795 CCA. Both Group34 sized.

 

I recommend having the battery load tested to determine its health. If it shows at all weak I'd replace it. Most auto supply stores and NTB (National Tire & Battery) will load test your battery free of charge in about 5 minutes time, oftentimes right in their parking lot..

If you amortize the cost of a new battery over its typical life of 6-7 years a battery only costs about $3.00 a month or less. I'm guessing that's not a lot of money for most people! But sometimes i wonder!

It's amazing to me how many people wait until their car won't start due to a dead battery before they decide to replace it. They want to get the very last crank-up out of that old battery! Maybe if they get stranded at a very bad and stressful time they'll learn an unforgetful, valuable lesson.

 

BMW had a load management system that factored in battery degradation over time. I had the gas saver that turned off the motor when stopped and it was the first thing to shut down when the batter was reaching the end of its life.
Does anyone know if these cars do similar? WE don't have the auto off feature but other other features might matter.

 

@goose300 that makes sense since Ontario can have some colder temps overnight in the winter months, there is a greater need for extra power on startup in your area.

 

Ever since I moved to Hawaii I have noticed batteries degrade faster in all the cars I've owned. Mine sits in direct sunlight 365 days a year. My previous Honda Accord went through batteries about every 2-4 years also.

 

Heat is a far worse enemy for batteries than most people realize. Most people think cold is the biggest concern. That is incorrect.

 

Wow was not aware it was that much of an issue. Just another paradise tax outside of ridiculously expensive housing/food/electricity/gas.

 

Hopefully I'll get another year or two out of the original battery on my 18?! It's never gone more than 24 hours off of a Battery Tender since new.

 

Do you happen to know how to check if that specific battery is in stock at a local Costco?

The website only redirects me to the specific model needed but doesn't provide any instructions on purchasing it.

 

@charley95 - Why such a passion to keep a charge on the battery, especially such a new battery?

 

Jeeezze..... this forum can make a whole big major project out of a Battery change. lol!

 

😂. I need to get an new battery, my Bosch agm is still working but I am noticing the steering wheel movement pauses in the middle of the start as opposed to everything moving and starting at once. These hot California summers don't help either and it's in a garage.

 

A even bigger project for some people is squeezing another day out of not replacing their old, weak battery!