812 wouldn’t start

That’s weird but the battery can created all sorts of gremlins. My gts is in for an engine failure message that shows and then disappears….we are thinking battery as everything else is ok. I should get it back early next week and if there are any epiphanies I will pass on. Clearly a different issue but who knows what’s causing either!

 

All the signs of a crappy OEM battery. Ask for an Interstate or equivalent replacement.

 

Also ask them to check the wiring harness. Experienced a similar issue, except the car would not start again after throwing various electrical errors. Turns out the car kept popping a fuse due to an issue in the harness.

 

Sounds like the battery. Very similar to what happened to mine. Takes a lot of amp to start our v12's! You can do a load test. but sounds like you're under some warranty? I wouldn't worry too much.
Ask the dealer to do a load test if they think the battery is ok.

 

seems like a battery issue, good luck with fix

 

This is almost exactly what's happened to me with cars that have had batteries with bad cells. I think very likely a battery issue.

 

Except if the car is near end of warranty then push for battery replacement. They will tend to say its not great but still good. You may have to pay up for parts and labor next time and this is not an easy DYI.

 

If the dealer only tested the "voltage" that is incomplete. They must do a CCA test (cold cranking amps), that would tell you the relative strength of the battery, if the CCA test reveals the battery is more than 5%-10% under is stated CCA rating (should be on the battery label), time to replace (typically, when new, the battery will test well over its CCA rating)

Further, as preventative maintenance I would suggest simply replacing the battery at 36 months since installation, unless using some high end replacement battery, a standard battery is living on borrowed time the older it gets from 36 months, no need to let it leave you stranded before you replace it.

 

Funny enough, I’m about to be on battery number 3 in my 812. I leave it on the trickle charger when not in use, I drive it more than 20 minutes any time I start it, and I have nearly 20,000 miles on the car now since I took delivery mid 2020.

All the symptoms you described happened at each point when the batteries died. First time it happened I was fortunately down the street from my ferrari dealer. They did a load test and replaced the battery the first time. It happened again yesterday when I was about an hour away from home/the dealer. I was able to jump it with a jump box and get the car home, now deciding on whether I go with a better aftermarket AGM or go anti gravity. 2 batteries dead in 2 years time.

 

Here in the desert we're lucky to get more than 2 years on a battery. On my other cars I get the AutoZone 3 year warranty and have cashed in at least one replacement every time.

355 - two in 4 years
458 - replaced after a year (only had the car 15 mos)
F12 - once after a year
Alfa Giulia - third battery in 3 years
Wife's QX80 - 3rd in 4.5 years

 

My car wouldn't start after about a week unplugged, which is pretty sad. This is already the second battery.

As for the OP I had the exact same issue. Literally came back from a drive, tried to start the car again and the battery was donzo.

 

Stew, Jonathon,
Let me know if you get an aftermarket one. I planning on changing mine as well. A couple of members recommend braille B10049 . Any opinions?

 

I'm leaning towards getting an antigravity battery and trying it out. I chatted with FoS and they'll warranty my battery, but I'm kind of tired of annually replacing the battery. I bought a jump pack to keep in the car for when the car dies and I'm out and about, hate having to use it.

 

no worries on it being lithium ???

 

Not really. Alternator should charge the battery, and it will likely be completely fine.

 

And I hope they sent a bottle of champagne with the car back after that kind of interaction.

I know they’re limited to what Ferrari let’s them do and will pay for but honestly…
Once a battery goes in these cars with a bad cell or whatever it is the source of so many gremlins in a repeating nature

Surely they know better or should know better

 

The AG batteries are Li-Fe not Li-Ion. Those are a lot safer from a fire risk standpoint.
The charging and balancing etc. is handled internally in the battery. Only addition needed is the CTek lithium charger and a magnetic connector for the CTek to the car.



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If it's an 812 you need to check the size. If memory serves, the 812 switched to a group 48 size battery. This should be possible without pulling the battery. If it is indeed a group 48, you need Braille B7548.

In any case as far as AGM batteries go, Braille is as good as it gets. Their batteries are developed to handle heat in a high performance environment, and their current delivery is far beyond what your normal AGM can do. Yes it may be 150 bucks more than jour average Interstate or whatever, but they are also in a different league.

AntiGravity or Braille AGM. Both work great. It depends on what you prefer. Loved the AG in the Lusso for sure.

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When I go to pull the battery to confirm the size I’ll get some pictures for a little how to. I’ll also double check if the workshop manual has their preferred method. I’d guess the owners manual also has it, but it could also just say take it to the dealer lol.

When I’ve done it, and when I had the dealer come do it when I was down the street with no box, we hooked red to the big red post we could access and black to the negative quick disconnect. Every time I’ve done it this way it worked just fine. I’m guessing the reason they say you could mess it up is if you do it backwards you can really damage stuff. But with modern jump boxes they’ll confirm if you’re hooked up reverse polarity.

This is the jumper that I’ve got, only time it doesn’t work is when the battery is absolutely flat dead. If the battery will light up the dash this thing will work. https://no.co/gb70 Noco GB70

 

This is incorrect. Both are AGM batteries. The only batteries that will need a new charger, are the lithium options The Braille 7548 is 100% plug'n'play with no new charger needed as it also AGM.

The Antigravity H6 60ah or Braille i48CS will need the CTek Lithium XS and this adapter. https://www.ebay.com/itm/182967461758
Those adapters work great. You can also use them with CTek AGM chargers if you want to try a better charger than the stock Ferrari charger but stick to an AGM setup.