Last year, Tesla tried to fix the rapidly dying 12v battery problem with a software update. How fast depends on many factors, including climate and how often you drive the vehicle, since driving it more often can actually help with longevity. They have a tendency to die pretty fast - or seemingly faster than in other vehicles. 22 hours ago &0183 &32 Tesla Roadsters Abandoned in Container Reinforce Battery Packs Also Die of Old Age - autoevolution I had been insisting on how expensive it is to replace battery packs for quite a while. Its time to upgrade your 2013-2022 Tesla Model S 12V battery with a replacement, ultra-lightweight, and performance 12V lithium battery Weighing in at only 9.0 lbs versus Model Ss. Like in most cars, the 12-volt battery system in Tesla vehicles powers the lights, media unit, windows, and more.įor a while now, Tesla has had a recurring issue with its 12-volt batteries, especially in Model S and Model X. Now, Elon Musk has released another previously unknown detail about the new Model S and Model X: Tesla is moving to Li-ion 12-volt battery. We have obtained more information for documentation that Tesla sent to employees, but we are still learning more about the updated vehicles, which feature new battery packs, electric motors, refined exterior design, and brand new interior. The automaker released a bunch of information on its website, but it didn’t do a full reveal of the new vehicles like it usually does. Last week, Tesla finally unveiled the highly-anticipated new Model S and Model X. If everything was well designed, it should last as long as the car.Tesla has transitioned the new Model S and Model X to a Li-ion 12-volt car battery – getting rid of the lead-acid battery. The cycle life appears to be high at over 2,000 cycles until the capacity will decrease to 80% of the initial value. There is a theory that the system can heat up the battery with a repeated slow charging/discharging if needed. Its natural that they make that available to 3/Y owners as well. And they can discharge at temperatures as lows as -20☌. 1,602 Bay Area CA 1 Tesla replaced the lead-acid battery in new S/X with a Li-ion. According to the general CATL specs, the battery cells can accept charging at temperatures as low as -10☌. There are no signs of a heating system for the battery, which indicates that it's not required. It means that not only are the entry-level Model 3/Model Y equipped with CATL batteries (LFP traction batteries), but also the all-new flagship Model S/Model X has CATL batteries (just the auxiliary, not traction ones). Tesla Model S Plaid 12 V lithium battery (source: Ingineerix)Īs we can see in the second video (on the bottom of this post), the new battery consists of a BMS circuit board made by CATL and four prismatic NMC lithium-ion battery cells (6.9 Ah each), connected in series. It stores about 0.4 kWh of energy, but weight is quite substantial: 27 lbs (12 kg).Īccording to Ingineerix, such batteries last in Teslas about 2-4 years, which is pretty low and sometimes causes unexpected problems if the car stops working. The old lead-acid battery vs new lithium-ionĪs we can see in the video, previously Tesla was using in the Model S/Model X a 12 V, 33 Ah lead-acid AGM battery. It could be a bit more expensive, but the total cost of ownership should be lower. In general, a lithium-ion battery should be smaller, lighter, more reliable and last longer. Some individual users were already replacing their 12 V batteries with a li-ion version on their own ( like here). The lead-acid batteries turned out to be problematic in EVs, due to a different use case than a starter battery and manufacturers are expected to switch to lithium-ion versions sooner or later (partially, with the potential transition to 48 V auxiliary systems). The video starts with a general overview of why EVs still use 12 V auxiliary batteries and why they continue to use lead-acid ones, while the main traction battery is lithium-ion. Thanks to an outstanding, two-part presentation and teardown conducted by Ingineerix, we can take an in-depth look at this new solution, hinted at in early 2021 by Elon Musk and shown only briefly at the delivery event. With the refreshed Model S/ Model X, Tesla switched from conventional lead-acid to an all-new lithium-ion 12 V auxiliary battery (Model 3/Model Y still uses a conventional one).
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