Please help me with battery tender.....

Buy a deep cycle battery and an invertor and a lock box and bolt it to the wall

Problem solved

 

Get a Braille lithium battery.

 

Technically, you don’t need to convert the 12v from the internal Yeti battery to 120v and then back to 12v for the car. You can just connect a battery or two directly to the car battery.

At any rate, you would have to lug the batteries to a electrical outlet to recharge them. Various batteries have different capacities but, generally, the more juice, the heavier the battery. Lithium ion batteries pack more charge per pound.

I don’t know much about modern Ferraris but I am very surprised that the battery discharges so quickly. I had thought that modern cars have a good “sleep” mode which drops power consumption to almost nothing. Maybe there is a system in your car that is not properly going to sleep.

 

Ferrari is a needy girlfriend. Can you get a solar panel and see sky? You can run Trickle charge that way.

 

You can do it race car style very clean and non-invasive with a Cole Hersey continuous duty solenoid and a small low power switch inside the car. Then you can cut battery off from car when on vacation. You only loose radio settings and obd2 monitors this way. If you hide the switch the system acts like theft deterrent. Car will not start and no one will know why but you. On a shorter trip you can plug a motor cycle style light 5lb battery into cigarette lighter then kill the main battery via switch. That will keep your obd2 and radio settings for a few days. Then flip switch power up car disconnect cigarette lighter and start car.

 

The simplest and most obvious solution is a battery disconnect device. It only costs a few dollars and can be found at any auto parts store, wal-mart, etc.

 

What model and year is your Ferrari?

Are modern Ferraris tolerant of this? I have read (on the internet!) that some modern cars cannot have the battery disconnected without computer system reregistration problems.

 

Portable jump start box... keep it in the car and recharge it as needed...

https://www.autozone.com/test-scan-and-specialty-tools/jump-starter/p/noco-genius-1000-amp-lithium-portable-jump-starter/824997_0_0?cmpid=LIA:US:EN:AD:NL:1000000:GEN:10574827360&gclid=Cj0KCQjwxb2XBhDBARIsAOjDZ342xMXmtqKXl5p4gq56mGRFdoRsb8T51mpWEcUOfwDmXnlUuYsNDbIaAkdzEALw_wcB&gclsrc=aw.ds

 

Can’t do it, every time you discount the battery on the newer cars it has go through a steps/procedure for ten minutes before you drive can drive it. This would be a pain in butt.
The idea worked great on my 355 but not on the 458.

 

I think it will depend on whether OP is talking about every time he goes for a drive, or anytime he’s going to be away for more than a week. On my F12 after reconnecting the battery it’s probably less than 10 minutes for the reset. Turn key on without starting engine. Wait a few minutes, keep AC and radio off, then start and let idle for a few minutes while it relearns. But as others mentioned I would first try a lithium battery. I’ve had good experiences with Antigravity. Not only does it hold charge longer than a lead acid, but also recharges faster in the car so shorter drives can still keep it topped off.

 

You're right. We still don't know what kind of car the OP has, but I'll make a new statement. The simplest and easiest solution is just to drive it every couple of days and only disconnect the battery when going on an extended trip. That way the car will be happier, but the reset procedure will only have to be endured occasionally.

If it's a normal parking garage and the assigned spaces aren't private, I'd imagine a portable charger would go missing rather quickly.

What are the devices in the car that are drawing the current? Maybe one could simply pull the fuse(s) for those circuits to slow down the rate of discharge in between drives.

 

That’s the answer no one knows; these newer cars have so many ECUs and they all “talk” to each. I don’t think you can single out what fuze(s) to pull. Anyway they tuck away the 3 fuse/relay panels and they are not convenient to get to.
IMHO the only way out is a lithium battery(not foolproof either) or a charger some how or another.

 

Braille or Antigravity lithium battery. That will solve your problem.

 

I would never use a lithium battery today. Google thermal runaway. Ferraris have enough problems already. I don't even use lightweight lithium in my racecars. The weight savings isn't worth it IMO. I have seen racecars burn down at the track from litium batteries.

 

Is the Yeti working? Or did you find another solution? I have the same situation- no power outlet and unable to have one installed in the parking garage. Right now I am trying to drive 20-30 minutes every 2-3 days, but that is not the long term solution. My Ferrari dealer can get a battery that supposedly fixes the problem but there is no guarantee, it costs $2900 usd and ships from Italy with a 3-4 week shipping estimate. I would rather go with the Yeti, if it works.

 

You can see some information about the battery on the Ferrari website https://www.ferrari.com/en-EN/auto/genuine/california-t/longlife-battery . I thought it would be the answer to my problems, but when I called my Ferrari dealer's parts and service department they had never even heard of it. They offered to check into it for me and the end result was not great. They said there is no guarantee that you won't need to use the battery maintainer with it. Although, they say you don't need to, they won't guarantee it. The shipping time was quoted as 3-4 weeks. Shipping by boat from Italy, so my guess is that 4 weeks is very optimistic. The cost seemed kind of crazy also. I don't think the $2900 included shipping or tax and I know it did not include installation. As a side note, I looked all over the internet for this battery and couldn't find it anywhere. I am guessing it is only available through Ferrari. I am going to order the Yeti 1000 Core and see how that works. If you get 3 days from the 500, maybe i'll get 6 from the 1000. That means only charging it once a week, which I can handle. Good luck and let me know if you end up getting the Ferrari Odyssey battery.

 

There might be alternatives to the Odyssey, but I haven't found one. It seems batteries are difficult to find for Ferrari's as it is. I don't know very much about it, but when I searched all the major battery sites I couldn't find anything. I am just going to get a new battery from the dealer and keep it on the maintainer using the Yeti. Much better than having to drive it all the time just to keep the battery charged. If I get anymore info when I see my dealer I will let you know.

 

I have somewhat the same problem since my storage units do not have power. My crude but simple solution is use a portable CAT power unit and a 4amp Battery Tender - If I have not driven the car(s) before a trip I top them all off before I leave - when I get back I do the same thing. The power unit and the batter tender can stay in the car so no need for external connectivity. When the power bank runs out of juice it simply shuts off - no harm/no foul.

I find this works quite well - And for emergencies I have a NOCO portable jump starter - Like I said - crude but effective - and I have four cars

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I keep the NOCO starter in my car’s trunk just in case, too. Very reassuring!

Andy

 

How long will the Cat run the tender? I think the Yeti 1000 should be good for about a week. I'll usually drive it at least once a week, so that should be good enough.