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ED Life Expectancy

1795 Views 17 Replies 6 Participants Last post by  sokoloff
I just recently had my HV battery replaced at 13,500 miles on a 2016 451, under warranty. I am now curious as to what to expect for the life expectancy of my car. Is there a standard life expectancy for these cars? Or is it just a crap-shoot? I should note, I love driving the car and plan to drive it until it dies or becomes so undependable that it is not worth the effort.
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So what is the chemistry of the lithium Smart batteries, if anyone has that handy? I'm about to have a 'new' HV battery installed in my 451ED auction prize. I plan to inquire if it will be new or reassembled or ?? If it will be a rebuilt then the chemistry might be somewhat different, hopefully state-of-the-art.

Also the warranty terms that I will have to agree to.
My 2012 Tesla ModelS had its battery replaced in early 2014 with one of the best versions to date, so today at 60k miles it still has the same max range of 265 miles. Plus it has the improved contactors inside. Tesla has slowly reduced the cobalt content of their batteries over the years.

Good to hear you still have 80% left in your (built in 2012) 451ED. I considered trying to resuscitate the 'dead' auction car battery, now some seven years old, but chose to have MB put in a fresh one instead. It is hard to put 'Tesla miles' on a "local" car like the ED/EQ so age and overcharging are the issues.
If MB is re-populating old packs with new prismatic cells then likely they would be using the best available chemistry or even a new cell mfr compared to back in 2013, no? What cars share the same cells as Smart? I'm guessing 6 sheets, each 63v.
Well, I'm glad MB has agreed to sell me my core battery back so I can try to restore it. Prior owner took car to dealer with typical '2 bad batteries' syndrome just 30 days ago, so I should be able to get in there in time to attend to each cell. Plus it saves me the job of removing. :)

I would say 80% SOC as a very very responsible operating max for day to day ED operation (was the 60 a typo??). It's a crap shoot stopping the charge by 80% in any event. If I bring mine up to 90% just before a 50 mile shopping trip it gets me back home before it dips to 20%.

Long term storage rules from Tesla Motors is between 40-60%. Cold nights @7400ft in the Rockies usually only 2 nights in a row in Dec caused no battery damage to my 2 Teslas for years. Batteries could warm up during the day from cold soak, and if the wind blows the temp never gets much below 0*F at night anyway. Northern MN however not so lucky in that regard.

Long term storage rules from MB . . . I will inquire.
Last trip I read the voltage (12.2v) just before turning the key (where it jumps up to 14.4v) so, right, the car had been sitting for over a week.
But it started and ran fine. So the 5 year old battery (from factory date) is showing its age and I should replace it with the new 12v Li-Ion battery
that is on the shelf waiting. First I want to scope the charger's output to be sure that it is limited to 14.5v max with no spikes above that figure.

Today I decided to read the voltage by sneaking in the pass door and measuring @the battery terminals rather than the cigar o/l voltmeter. It
read 14.5v!! So double-clicking to open the pass door must be equivalent to giving the key its first click. So much for that idea.

I don't want to leave this car alone for a month or so without at least doing something pro-active. Not with this weak 12v battery.
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