Unfortunately, getting a replacement battery from Tesla within 24 hours just won't happen anymore. How long ago was yours replaced?
Did you already try to buy one? All the other discussion you have had in various threads on this topic sounded like you were not going to buy one but wanted to wait for it to fail, yet upset about the fact it might fail.
I got one within 1-2 days after putting in a service request for one, installed in my driveway while I took meetings. The price, installed was $129 out the door. The battery itself was $85, which is cheaper than any battery for any other vehicle I have had in the past 15-20 years.
I paid to replace mine, because I was concerned about early failure (like you sound like you are as well). I felt that $85 was cheap enough for a consumable product (car 12v batteries are consumable products) and I felt $129 replaced in my driveway without some sort of "penalty fee" for home service, was fantastic.
Your choices are:
1. Keep worrying about it and doing nothing, and wait for it to fail to hopefully get a warranty replacement (Save $85)
2. Pay to proactively replace it ($85) and install it yourself
3. Pay to proactively replace it and tesla install it ($130)
4. Get an aftermarket 12V lead acid battery ( > $85 ) and install yourself
5. Get an aftermarket li ion battery, ( >$400+) and install yourself, and roll the dice it wont be impacted by tesla changing charging algorithms (tesla has NO obligation to try to make aftermarket lithium ion batteries work, in cars that came with lead acid batteries)
Thats basically it. There is no option to get tesla to install a li ion battery in a car that didnt come one, and there likely wont be one in the future. There is no reason for them to do it. Even if they do, it absolutely wont be a warranty replacement.
If you are actually worried about it (like I was) then perhaps you should replace it on your dime. Its inexpensive, as far as batteries go. If its not worth $85 to you, then it doesnt sound like its that important to you, multiple thread posts notwistanding.