Tesla starts using lithium-ion 12 volt batteries

By Henry Farkas

Teslas have a huge battery, but you may be surprised to know that not everything can be powered by the car's main battery due. Teslas main battery packs are high voltage and can't power the more sensitive electronics inside of the car. Most of the car's interior electronics are actually powered by a traditional 12-volt lead-acid battery, the same one in your gas car. The difference is that instead of an alternator charging the 12-volt battery in a traditional car, in your Tesla the 12-volt battery is charged off of the car's main battery using a DC-to-DC converter.

Tesla 12 volt battery

The 12-volt battery is one of the earlier things to wear out in all Tesla vehicles. They typically last about 3-5 years before needing to be replaced. Tesla has started to deal with this issue by putting a lithium 12-volt battery in the newly produced Model S Plaid refresh.

Lead acid batteries are optimized for producing the high output needed to start a gasoline engine, with its heavy flywheel turning at the correct RPM to get the engine going in difficult conditions. That situation doesn't exist in a fully electric vehicle.

Teslas other than the refreshed Model S Plaid are still being produced with lead-acid batteries. Lithium batteries last longer, weigh much less and are optimized for use in electric cars.

You can buy a replacement lithium-ion 12-volt battery for your Tesla from OHMMU (use our coupon code "notateslaapp" for $25 off your order).

They also provide a video on how to replace the battery yourself.

The best time to do this is the first time you get a notification from your car that it's time to replace the 12-volt battery.

Tesla Begins Testing FSD in China

By Karan Singh
Not a Tesla App

Tesla was recently granted permission to test FSD on Chinese streets – specifically in Shanghai. Just recently, Elon Musk visited China and discussed the potential for FSD to come to China.

Gearing Up for FSD China

This is just the first step for Tesla to begin its customer deployments of FSD – Tesla conducts similar ADAS testing in North America, where special testing vehicles and testing employees run the latest FSD (Supervised) versions against a gamut of real-world, real-life tests.

Tesla has recently been working on translating FSD release notes into multiple languages, alongside building a data center in Shanghai and establishing an FSD Operations and Labelling team at the same center. These are the first, key steps to bringing FSD to a new market that has unique and different traffic rules when compared North America.

China doesn’t have the regulatory hurdles or challenges that Tesla faces in Europe to bring FSD and has been working with Chinese corporations as well as the government, which has now provided its official approval for FSD testing in-country.

We might even see FSD deployed to early testing customers in China by the end of 2025.

ADAS Competitors

There are quite a few competitors in the Chinese market already- with challengers like Xpeng and Xiaomi working on building their own homegrown systems, mostly driven by a mixture of cameras, radars, ultrasonic sensors, and LIDAR. However, many of these systems face similar challenges to other non-Chinese competitors and don’t have the mileage under their belts to tackle Tesla’s dominating lead in data and data processing.

European Union

Tesla is poising itself for an FSD rollout internationally, with increased testing also taking place in the UK, France, and Spain – some of the key locations with unique infrastructure in the European Union. However, some EU-specific regulations restrict how FSD can perform – each and every action must be manually approved by the driver. Until that regulation is changed to adapt to systems like FSD, it won’t be making its way there just yet.

Tesla Cybertruck to Receive Charging Improvements in Upcoming Update

By Karan Singh
Not a Tesla App

Former Tesla VP of Powertrain and Energy Drew Baglino previously mentioned that Cybertruck would be receiving charging improvements soon.

Wes Morrill, Tesla’s Cybertruck lead engineer, recently reposted Baglino’s comments on the charge speed update on June 16th and mentioned that it would be coming soon via OTA.

Charging Improvements

The 4680 cell has seen some difficulties in its charge curve, similar to Tesla’s other vehicles that have been deployed with the 4680. Tesla has alluded to difficulties in the manufacturing curve previously, and also with engineering improvements to the new cell standard, and eventually stopped manufacturing the Model Y with the 4680 cells.

However, this is the first time that Tesla has begun to deploy major improvements to the 4680 cell. It appears the improvements will allow up to 154 miles to be recovered in 15 minutes, which is approximately a 30% improvement to current charge rates.

We’re hoping that these improvements to the 4680 will also translate to older Model Y vehicles that have 4680 cells, which will be key to the owners of these vehicles. 4680 production is currently mainly focused on Powerwall, Megapack, and Cybertruck – with Semi not using 4680 yet.

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