Battery Question

Ferraris in general have a higher parasitic drawn which kills the battery in sometimes less than a month .. even if the battery is just able to start but low it will set off a number of faults again since the modern ferrari and most modern car electronics are very sensitive to voltage.. additionally most agm batteries don't like to go low and then get charged up repeatedly ..causes a short life span

These are the reason for a battery tender

Welcome to the Scud club

Another thing is that the OEM chargers are not the best back in 2009 so maybe consider getting one with the proper adapter .. I posted the one I got ctek mx7 I believe

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Yeah they have too much parasitic drain

 

Lots of modern day ecus consuming power even after power to ignition is turned off.

Trackers, Alarm systems, central locking, engine ecus, this list goes on whom all consume power even with engine switched off.

As cars become more tech laden this just keeps on getting even bigger... Couple that with batteries which can loose capacity over time and become much less efficient in cold weather and you have the perfect storm.

Now you can either fit monstrous sized batteries with extra capacity ampere hours or you can fit smaller ones which have less reserves. Ferrari choose the latter for weight reasons. Less performance biased cars go for capacity over performance.

 

I fully agree with the previous messages. I keep a battery maintainer on all of my "toy" cars to avoid the parasitic drain and also to keep the battery at peak operation. It also helps prolong the life of the battery. There are also many similar posts on this site regarding batteries and maintainers that you could find useful.

 

Ctek mxs 5.0 with ferrari dongle..works great so far ..I am sure there are others as mentioned in other threads

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Gentlemen,

I read these type of concerns on this forum in many different question formats.
It does not matter if a vehicle has 10 modules or 50 and communicates with modern day technolgy which includes flexray, Canbus or simple Lin communication when the car goes to sleep mode which usually is around 10-20 minutes after the key is cycled off the parasitic draw should never be excessive.
Acceptable parasitic draw is around 0.025ma...this by itself will not kill a battery short term.
As stated what does accelerate battery long term life is: ambient temperature (extreme cold or just the opposite high heat) battery age and ofcorse lack of maintence. As stated when a battery gets to a low voltage anything typically below 12v in some cases they have a tuff time to fully recover.
So is it a bad idea to maintain a battery the answer is No, using a smart charger is the only way to go however if your vehicle has excessive parasitic draw you are not maintaining you are keeping it alive..that battery will be depleted in a very short time without a charger.
I hope I am adding value to this subject.

 

I'm not sure if I agree, I semi daily drive (a few hundred miles a week) my 2016 FF and it still goes down on charge, enough to where hooking it up to the CTEK shows a pretty big difference from where it's at charge wise, to full charge

Maybe it's time for me to get a new battery who knows

My Lexus on the other hand? Never a problem

 

I would recommend having your battery inspected by a sophisticated test equipment this will give you factual data on battery life.
If this shows good results check for parasitic draw..
Your Lexus I would venture to say has many modules and utilizes modern day communication.

 

Keeping the battery at a good charge keeps battery life higher. Once it fully discharges it will lower the battery life even if fully charged again.

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I live in a high rise building and there are no power outlets. All of this tender talk has me concerned. I have looked online for a rechargeable tender but have not seen anything. The thought process is to charge the tender and get a few weeks with it on the car (you get the idea) then charge again. Anyone else in this situation? My Noble M12 GTO-3R had a battery cutoff switch which worked perfectly, but that car had less electronics to worry about.

 

some Scuds don’t have issues— 2 years now— sits for 3-5 weeks sometimes, 2-3 weeks all the time. Spins fine.

 

Trev's answer is correct AND they can easily sit for a month. Many here don't drive their fun car that much; it is easy for a month to go by when you travel, have 3 cars, etc. SO, if you drive every week or every other week, it isn't an issue. There are some other with electrical issues and they don't track them down but instead blame the battery. Tracking electrical issues is a real pain in the ....

Mr A, I think you are confusing a smart chargers function with a discharged battery. They always start showing a 'low' condition and rapidly move back to full if the battery is fully charged. Have you ever done the same exercise on your Lexus? I suspect you haven't and that you don't even have a charging cable available on that car; you just assumed it is ok since it didn't misbehave.

 

You may be right I'll try to get a NOCO extender installed on the lexus and check it out

I could just tell that the FF battery was starting to get low because it took longer to crank and actually start

 

A month is fine if the battery is any good to start with. About 50% of the cars I service come in the door with a compromised battery.

 

Fair point. Lots of compromised batteries around; particularly given the little use they so often get.

 

I have a few chargers, including a NOCO. I like the NOCO a lot but it definitely works that way. I plug in a battery, let it fully charge, unplug for 30 min, and the charger will start at 25% charged again (maybe 50%). It did that even with a brand new battery.

 

I'm going to have to install a multimeter in all my cars at this point haha

 

Try Save A Battery.

 

You are 100% right I did the same thing to the Lexus today and it started on 25%

I'll have to get a load tester and make some documented notes from now on!

 

I have had a 360 for 11 years, never put it on a tender once. I try to drive it every week but have gone 2-3 weeks with no issues.

 

The 430 Scuderia, at least for North America, came oem with a Optima Red Top AGM battery. They are rated at 800CCA, which is pretty decent capacity. Note that red tops do not have the best reliability, and it is worth load testing it at least yearly, if not every 6 months. They are also known for not taking to a deep discharge without losing significant capacity...which is not normally a trait of AGM batteries...but again, red tops suck. Worse, the battery tray on the North American 430 Scuderias are specifically designed to fit an Optima red top Group 34R battery. If you want to fit something else, you either have to modify the tray, or replace it from the standard F430 Berlinetta or Spider battery tray (over $200).

My red top is now 6 years old and barely passing a load test. I'm replacing it...but since I am lazy, I just bought another red top, even though there are better options. I haven't fit it yet, but will shortly.

 

I followed your advice, the Save A Battery tender is my favorite. (I own several brands, including Deltran, and Griot's Garage) Solidly built with a pretty rugged case, includes several different connection options as standard and I like the voltage display and LED indicators. Mine is older, I notice they have a different display now.