Willie via EV wrote:
Here is a relevant anecdote:
My 2013 Tesla S ran through 12v lead batteries at the rate of about one
every 12 months. That was of no great concern to me while the batteries
were under warranty. However, after the first three, that part of the
warranty expired and I bought a lithium with LFP cells. The leads would
have cost me around $200 to replace and the lithium cost about $400. The
lithium has been completely trouble free for about five years now. And
is still in service.
Now it is possible that Tesla has corrected, or more likely reduced, the
problem via software updates. There is quite a range in reports of
Tesla lead battery longevity; mine is on the poorer side; many report
several years of life. But, if early history was indicative of future
performance, I have saved several hundred dollars, maybe around $500, by
using lithium instead of lead. Not to mention quite a bit of cost and
pain that is associated with 12v battery changing in early Ss. Changing
an early S battery can be a half day job.
Seems like I have recently read that Tesla has finally decided to start
using lithium for 12v. When I needed to get my lithium installed, Tesla
service refused to install the "unauthorized" part.
Like I said, lithium is a special-case solution. Your Tesla may be one
of the special cases where it pays. :-)
Otherwise, it's not normal for a car to need a new 12v battery every year.
Lee
--
A designer knows he has achieved perfection not when there is
nothing left to add, but when there is nothing left to take away.
-- Antoine de Saint Exupery
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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