The battery consists of 7,920 lithium-ion 1865-type cylindrical cells, which are … Contact online >>
The battery consists of 7,920 lithium-ion 1865-type cylindrical cells, which are
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The refreshed Tesla Model S and Model X include a huge number of new technologies, features and solutions. One of them is the all-new lithium-ion 12V auxiliary battery, which replaces a conventional lead-acid battery.
DragTimes happens to be probably the first to point out this new 12V battery in a Model S during the Plaid delivery event yesterday (see video from 26:29).
This new version appears to be very small and much lighter than a standard 12V battery. We strongly believe it will also perform tremendously better than the standard lead-acid one, which in many cases (and many models) died far too frequently.
A 12V lithium battery has tons of advantages in EVs as it saves space, weight, has a higher cycle life and calendar life and suits the application better. Lead-acid batteries are good for starting an engine with high current, which is completely not needed in EVs.
We guess that it will withstand much longer without a charge from the main battery through the DC/DC converter.
According to the owner''s manual, the battery is 6.9 Ah and 15.5 V nominal, which translates to 106.95 Wh. That''s not a particularly high value (an example Liontron battery 12.8 V / 20 Ah nominal is about 256 Wh) so we will wait for confirmation, but maybe Tesla figured out that it''s enough. The smaller its capacity, the less expensive and more efficient (weight) the car is.
The main traction battery (obviously lithium-ion) has a 450V nominal voltage and according to Tesla can operate at temperatures between -30°C up to 65°C, although not for a prolonged time.
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Among the many changes that Tesla implemented in the new Model S Plaid, a new, 12-volt lithium-ion battery is one of the most subtle yet significant improvements the company made to its flagship sedan. The new 12V li-ion battery replaces the conventional lead-acid battery that has been considered the “standard” in automobiles for a long time. However, Tesla aimed to improve the life cycle of this low-voltage cell to improve convenience and lifespan for owners.
The new, smaller, more compact 12V battery actually holds several advantages over the previously used battery that Tesla used. While weight and size are obvious improvements, one of the biggest advantages is an increased lifespan. The previous lead-acid battery did not have a consistently long lifespan and was sometimes changed up to three times a year by some owners. This could be due to the overwhelming amount of strain that is put on battery cells when running an electric vehicle. In gas-powered and combustion engine vehicles, the lead-acid battery is a suitable choice because it is only used for starting the engine and minor electrical tasks like powering interior lights. In electric cars, the 12V battery could handle more tasks, thus decreasing the battery life.
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Lithium-ion batteries are more suitable for EV applications, especially as lead-acid batteries are more advantageous to utilize with vehicles that have high currents when starting an engine. This doesn’t apply to electric vehicles, and owners have been upgrading to lithium-ion 12V batteries for some time.
Initial photos of the new lithium-ion 12V battery seem to illustrate a significant number of advantages, including size and weight. A photo from Tesla Raj shows just how compact the new battery is, leaving more space under the hood and eliminating some of the weight that was held by the previous lead-acid battery.
Looking into the specs that Tesla outlines in its new Model S owner’s manual, the low voltage battery has a rating of 6.9 amp hours, with a voltage of 15.5v. Previously, Tesla utilized a 33 amp-hour or higher battery with a 12V negative ground.
Credit: Tesla
The Model S Plaid could be looked at as a transitional vehicle for Tesla’s future models. Not only is the car a marvel of software and infotainment, but Tesla also utilized subtle technologies, like the new 12-volt battery lithium-ion battery to remove weight and increase space, to make the Plaid Model S its best vehicle to date.
Check out Tesla’s unveiling of the Plaid Model S below.
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I had an interesting experience the other week when the 12V battery needed replacing in my 2019 Tesla Model 3.
For me, it highlighted how much of a lead Tesla holds in terms of their vehicle systems engineering and overall customer experience. Other automakers could certainly learn something by understanding how Tesla does what they do best in these areas.
Some people assume that EVs don''t need a separate 12V battery as they''ve got a huge battery pack already. However, they can''t function without a working 12V battery. This battery essentially powers all of the electrical components except the drive motors, including lights, wipers, door mechanisms, infotainment system and so on.
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