I never got stranded with any of my ICE batteries over the years. I considered replacing them every 4-5 years routine maintenance cost. Getting ready to replace tires on my RV as well, even thought they have a lot of tread left. They are approaching 7 years. Again routine maintenance.
I'm not sure why you haven't bought a battery tester in 50 years...
I have two of them. 5 tenders also. Still 4-5 years for a battery is good enough for me. Cheap insurance. You a Solo STS driver, or a Space Shuttle guy?
He could be a US Senator. STS-134 was the second to last shuttle mission and current Arizona Senator Mark Kelly flew on that mission. He is also a Tesla owner per the linked article.
I watched STS-134 launch from the NASA Causeway but have never been connected to the shuttle program.
I always think about what it would be worth to me to avoid having a car that's stranded due to a failed battery. For me, it never seems to happen at a "good" time - always when I'm in a hurry and trying to make an appointment. I find a proactive replacement much more relaxing for my lifestyle.
AGM does have a slightly different charging curve, and doubles the price in many cases.I ended up waiting (various reasons, unintentionally) for 3 weeks after I trickle charged my swollen battery. Tesla tech was nice and also told me that my battery via the diagnostics looked fine; then I told him about the alert and swollen aspect. He agreed, it was time to change but this was just based on the swelling. Just over $100 in the socal area.
Next time, I’m just going to replace it with an AGM that I install myself.
He did not recommend transitioning to a lithium ion, as it will currently throw codes about State of Charge and such.
IMO: a trickle charger / tender is useful even for a Tesla. More useful if you also have a weekend ICE mobile
Can you point to these threads? This seems like it would completely freak out the onboard charging and health detection systems which are so sensitive that they easily flag a LFP vs Lead Acid.
The Tesla system puts 20+A loads on the battery at times, which is plenty to detect health changes, and it also can do coloumb counting and check capacity of the battery. The old school hit a battery with 500A and see what happens to the voltage was only a valid health check if you needed to put 500A loads on the battery. It's not a particularly interesting test for a non-starting battery that is used like it is in a Tesla.
teslamotorsclub.com
Early Model S cars from 2015 have almost nothing to do with a Model 3, much less after the charging updates in firmware from a year ago.
This was very informative. I just got the "12v battery must be replaced soon" push notification while on a road trip. I have a long drive home tomorrow and your message gives be confidence that I won't encounter any issues. I did notice that the car will no longer sleep since getting that notification, but that's a small price to pay to keep the car running.
It's been reported extensively that once the car pops the 12V error, the car keeps awake on its own. There is likely just an internal toggle that is unrelated to any feature (does not require end user to activate).
I have my car connected to Tessie and TeslaMate and I can see there that the car isn't sleeping anymore. It seems to be consuming about 200W while idling. This happened automatically.
