fcharland
Member
It is... And it outputs 12v only. Below 50V, there is no problem with it being always on.
It is... And it outputs 12v only. Below 50V, there is no problem with it being always on.
What if there is a short? Is it still protected with a (easily replaceable) fuse like in the 1st gen Model S?
Having my 12V replaced today ... not covered under ESA, $235 expense, unfortunately. Are these replaceable outside of Tesla?
It’s a $125 part. And if you have a 1st gen there is a considerable amount of work required to extricate the old 12v and realign all the connectors. Plus you get a 1 year warranty with Tesla. Not that bad of a deal IMO.
llavalle
Member
Just one thing to be aware of : Tesla chaned the type of battery at one point... and if you replace the old one with the new model, it requires a configuration change in the car... and this can only be done by them.
I'm not sure which one is new or old (model number)... but someone could probably dig it up.
I'm not sure which one is new or old (model number)... but someone could probably dig it up.
ohmman
Plaid-ish Moderator
I missed this. What configuration change is necessary? Did they move from traditional sealed lead acid to AGM or gel? Is it a discharge cycling thing?
llavalle
Member
I'm not sure exactly what changed. Capacity changed for sure but I think that it's still sealed lead acid. As for the config, it's a config on the gateway like everything else.
I'll see if I can dig out the info.
dgpcolorado
high altitude member
Doesn't the ESA have a $200 per visit service charge anyway? (Since I don't have the ESA I haven't paid much attention to the terms.)
fcharland
Member
I know for a fact, since I took the picture recently at Montreal service Center... they now have a DCS "+" battery for 1 st gen. (Don't know if it's the same one for 2nd gen) Here it is:
eye.surgeon
Active Member
llavalle
Member
ohmman
Plaid-ish Moderator
Likewise closing in on 4 years. It’s interesting how it varies so much. I have to think it is related to usage/driving pattern more than anything.
fcharland
Member
P85D March 2015 owner here .... I am very punctilious, and always kept my car plugged in, never deep discharges, almost never full recharges ... my battery warned it was going to die at 10 months old, replaced at 11 months old. Never a problem since. I had no car modifications or aftermarket additions at that point. Same settings on a power feed then as now
I'm just the opposite. I never plug my car in (I use CHADeMo when I need a charge) and I deep cycle the HV pack regularly, running it down to low single digits and charging to 90% (or more) on a regular basis. Never had a problem in any of my cars. One just turned 110,000 miles, another at 40k, and yet another at 25k.
smilepak
Active Member
My warranty is coming up, almost hitting 50k miles. Would service replace the 12V battery if asked?
Doug_G
Lead Moderator
I met an owner who went around measuring the 12V on a lot of cars at one of the early annual TMC events. He found a wide variation in the battery voltage, with a good number overcharged. At my subsequent service the Ranger reprogrammed the 12V charger from his laptop - apparently not remote loadable. So my conclusion is that some early cars may not have been set up properly at the factory.
IIRC in 4.5 years my 2012 S85 had three replacements. The first one was quite early, and the others were about two years apart.
IIRC in 4.5 years my 2012 S85 had three replacements. The first one was quite early, and the others were about two years apart.
FlatSix911
Porsche 918 Hybrid
Generally not replaced by Tesla unless the battery diagnostic logs indicate a pending issue or failure.
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