I have a 2008 G35, about 2 weeks old in fact. It'll be sitting in a airport parking lot from Sunday till late Friday night. If I have any battery issues i'll be sure to post here.

In fact over the next 3 weeks it will live at that airport lot, im home on weekends but then leaving either on Sunday or early Monday. I am hoping to get my plates before Sunday as I would rather not leave a car with paper plates in the lot.

 

Mine's garaged for full 4-5 days per week. I'll post if I have any problems starting it.

 

I've left my car for a week and a half before.... never had an issue.

 

Which one did you get. I was looking at the models, can't figure out which I want. My car is garaged all week. I drive it on the weekends, but not far. Which one should I get?

 

I bought mine for my BMW...
There is a selection guide though
pretty sure this one is what I have.... should be the same for a G

 

I got my car back today with a NEW battery and nothing seems different with starting the car since I had been driving it daily for a few days prior to dropping it off at the dealer and that had kept the battery charged. The service adviser said they hooked up the failing battery to some sort of machine that charges it for a certain amount of time then tests how much charge the battery retains and mine had just come below the fail limit, so I qualified to have partial warranty coverage of a new battery. I was charged $22.50 for 20% of the battery price, so the total battery price would have about $113. That seems kind of steep considering it is NOT a sealed, maintenance-free battery. The new one now carries a 84 month (7yr) prorated warranty, so again I'd have to pay some percentage if it failed in another 1-2 years. Hopefully this one will hold the charge better. The OEM battery had about 6 or 8 little caps through which the water is refilled. He said the fluid levels were OK on that failing OEM one. My new battery has 2 large caps on top for checking/filling fluids.

It was kind of weird which memories were retained with the battery swap and which were lost. I lost my seat memories and remote/seat link, the comfort and convenience settings set through the "settings" button of the nav system, and all my a-b-c sat/am/fm presets. My homelink program for my garage doors were OK as were all my phonebook, bluetooth and nav address book settings along with voicetags. All my songs/albums in music box were OK.

I guess I'm good to go for at least another 18 months.

 

Sometimes when I'm gone 1-2 weeks I'll leave the car at airport parking or the lot for BART (commuter train that goes to airport). In those cases, the battery tender is just not practical. How about folks that don't have a garage space and always park their car in the street. Can they use a battery tender? In any case, it's pathetic that we even have to consider a battery tender for an 1.5 year old Infiniti. I had left my car in my garage with everything electronic turned off that I could think of as well as the doors unlocked to prevent the alarm being set and it was dead after 7 days at 80-85 degrees in my garage. On the other hand my wife's Acura had no problems even without paying special attention to turning off all electronics.

 

Hi folks. I've had the fast battery drain problem on my 2007 G35 since new. I've had the dealer look at it and just as with the others, they say that there is only normal power drain. I'm sure the constant draining of the battery is not good for it. Well in the spring, the dealer tested it out and said it was "marginal" so they replaced it under warranty. Well, the past few days, noticed cranking up the car was hesitant. I finally checked the battery and it says 11.2V so I'm pretty sure it is on it's way out.

Rather than go through the dealer again, is there a battery that you guys recommend? Is an Optima better for frequent drain downs? My car is usually only driven on weekends (have a WRX as my daily driver), so sometimes it doesn't get driven for 7 days or more.

 

Deep cycle batteries handle frequent discharges better than normal batteries. Optima makes both kinds. You would want one of their yellow top batteries. Don't buy a red top as it won't help in this situation.

However, you're just masking the problem by replacing the battery. If it were me, I'd keep taking it back to the dealer until they fixed it. If they couldn't determine the cause, I'd make a claim under the lemon law. There's no reason you should have to deal with that kind of problem in a new car.

 

Hmm one time i went to the dealer before i got my car and i wanted a test drive in the X. I couldn't because the battery on the car died.....
This is kinda sad if this is the case for a car costing this much. My last car which was a 98 Camry, I left it in the garage over summer holiday, 2 months. I came back started right up.

 

I have not had a problem with my 07, yet. The longest I have left it in freezing temps is 3 weeks with no problems.
This winter it will be sitting in the freezing elements for over 4 weeks, we will see how it is then.

 

Hmmm. I don't know what to think. 3 weeks in the dead of winter would surely leave my battery dead. The reason I don't want to hit the dealer again is that I put in a powered sub in my trunk recently...they'll probably say it had something to do with it (even though it doesn't).

I might try the battery tender as a temporizing measure.

Problem with trying the dealer again also is that I don't think there is any rule or norm that states your battery should not be significantly drained if left for, say, longer than a week.

 

I got mine from autogeek.net. I think they have them for $10 off. If you didn't already get one.

 

had my car for about 20months no drains what so ever with longest standing time without any startup or interaction for 2 weeks and i also have an aftermarket alarm system with the fancy LED's and it cranked right up... fingers crossed, however these battries are not very good and are "maintaince" type battries where you have to check the water level and fill-up with sealed distilled water once its low(there's a special bottle in auto stores taht fills up to the top automatically without overflowing...)
However, getting a maintaince free battery should help in the future...

 

I put my radar detector into voltage reading mode and found out that at startup, the voltage is 14.6V. However, after a couple of minutes it gradually migrates down to 13.0V and stays there. I measured the battery at the same time and it is reading 13.2V--which is still below normal for the alternator. Hopefully the dealer will find the problem this time--alternator or voltage regulator? I think because of the poor charging, my battery may have been fubar'd. It went from 12.6V to 12.3V overnight.