Model 3 low voltage battery warning

Yeah that's an excellent price. i'd do that in a heartbeat. Doesn't look hard at all to get to either.
Even a lowly programmer like me can do it. Our RX was much harder because I could not open the rear hatch to get to the battery.
There is a lever, but you have to know where it is, and it is under a small cover.
 
The second picture is a LiFePO4 battery.
Yeah, good carch! That is actually one option; it costs like $470. I would not spend that kinda money... Plus you have to order one.
I just wanted to show the difference between the newer Lithium Ion and my lead acid.
Here's another pic:
1691538499551.png
 
Probably best to just one liner the trolls and move on unless you want to argue and waste your time for 3 pages like I tend to do when I get bored.

He’s looking to get a rise out of someone. He doesn’t know squat about batteries most likely. I dealt with automotive electrical low voltage systems for 15 years.


Well good for you. I guess only Tesla people should participate in these threads, right?
 
I'd still rather do it myself. The Tesla tech is probably another Quickie Lube Bozo.
Probably burn my house down...
Teslas are more computer than car, I wouldn't trust it not to send a message to the service people "unexpected battery replacement detected, recommend disabling supercharging until the customer pays for entire vehicle electrical system inspection".
 
I am actually disappointed in this battery's short life. The climate in Silicon Valley is pretty mild and the car sits in the garage.
I am considering preemtively replacing the low voltage battery every 4 years.

My service cost in 4 years 8 months:
1 gal blue warsher fluid; maybe $2
1 Conti tire that picked up a nail near the sidewall; $400 ouch!
1 low voltage battery; $120
 
@JeffKeryk, I’d probably just go with the AGM and not think twice. Especially since it’s not near an engine getting baked every day in high heat. I suspect the Tesla knows how to properly operate its batteries.
 
@JeffKeryk, I’d probably just go with the AGM and not think twice. Especially since it’s not near an engine getting baked every day in high heat. I suspect the Tesla knows how to properly operate its batteries.
Again that only works if the output to charge the 12V is at least 14V or it’ll die much faster from cell failure if it’s kept undercharged. I very much doubt Tesla is using its low voltage charger that way though.
 
@JeffKeryk, I’d probably just go with the AGM and not think twice. Especially since it’s not near an engine getting baked every day in high heat. I suspect the Tesla knows how to properly operate its batteries.
I will likely just get the Tesla replacement next time I need one. Perhaps as time goes by, more information will come out.
Around 2022 they changed to the Lithium Ion; dunno if this one craps out as well.
I was pretty surprised when the warning message came up. At least the car let me know. It runs fine except for 1 thing; the main battery loses a few percent charge over night. So all the logic is not operating correctly.
 
I will likely just get the Tesla replacement next time I need one. Perhaps as time goes by, more information will come out.
Around 2022 they changed to the Lithium Ion; dunno if this one craps out as well.
I was pretty surprised when the warning message came up. At least the car let me know. It runs fine except for 1 thing; the main battery loses a few percent charge over night. So all the logic is not operating correctly.
I wonder if it’s that or trying to maintain the current battery to make sure the other electronics stay available. Either way on all modern cars they do really screwy things with accessories when the battery goes.
 
I wonder if it’s that or trying to maintain the current battery to make sure the other electronics stay available. Either way on all modern cars they do really screwy things with accessories when the battery goes.
That's because programmers are idiots. But they throw money at us, so there's that...
 
I wonder if it’s that or trying to maintain the current battery to make sure the other electronics stay available. Either way on all modern cars they do really screwy things with accessories when the battery goes.

I remember once I was limping on a broken accessory belt with just one rib still there hoping it would get me to my destination. That was really bizarre, because the battery was still able to keep the critical engine electronics running without the alternator being driven, but the radio cut out. I think that was after the belt was completely shredded.
 
I am actually disappointed in this battery's short life. The climate in Silicon Valley is pretty mild and the car sits in the garage.
I am considering preemtively replacing the low voltage battery every 4 years.

My service cost in 4 years 8 months:
1 gal blue warsher fluid; maybe $2
1 Conti tire that picked up a nail near the sidewall; $400 ouch!
1 low voltage battery; $120
Due for cabin air filter and possibly brake fluid exchange.

Sincerely,
Your stealership friend.

IMG_5014.webp
 
I think that AGMs want a bit higher charging voltage than the lead acid. If it's not possible to up the charging voltage to the AGM from Tesla I'd probably just go with the lead acid even if I would prefer the AGM. I know VW has a setting that can be set by dealers for battery type because of this.
Id go oem for sure for an ev.
 
@JeffKeryk
This whole thread is confusing me and ok, that can happen. But Jeff posts a photo of his battery which is lithium ion not lead acid... and nothing can replace it but the same. So why the discussion about lead acid?

If 2008 Model 3s came with lead acid, Jeff is an exception because based on that photo he provided it is lithium ... or I am just crazy and well maybe an argument can be made for that but .. he doesnt have a lead acid based on that photo and its not going to be the price he got quoted unless he downgrades to lead acid.

https://shop.teslarati.com/collecti...tesla-model-3-12v-battery-replacement-lithium

Ok, as another pointed out above, I think maybe Jeff used an internet photo and that is not an actual photo of the battery in his car which is NOT lead acid even though it may look like one to some. @Vercingetorix is correct.

So back to Jeffs question he would be best off to replace the battery with whatever is in the vehicle and not over think it, it could lead to errors ... most likely wont but the question would remain, why? Both batteries have advantages and disadvantages though AGM on face value has less disadvantages, AGM is a buzz word that people think is the end all of a good lead acid, that thinking is incorrect for some applications.
Tesla decided flooded was better for that application so why mess with it?
Also flooded is a misnomer in todays world, lets call it advanced lead acid.
 
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