
Tesla's 1500km supercharging validity period is six months. Below are the relevant introductions: Dry electrode and pre-lithiation: What Musk values are Maxwell's two globally unique technologies - dry electrode and pre-lithiation. First, let's talk about this "dry electrode" technology. Dry electrode can also be called dry process electrode technology. As the name suggests, "dry process" must correspond to "wet process". Currently, the electrode manufacturing technologies in the market are mainly "wet process", which makes this "dry process" stand out. First, let's explain what wet process electrode technology is. Wet process electrode technology is a process where the binder, active material, conductive agent, dispersant and solvent are pre-mixed into a slurry, then the slurry is coated onto the current collector and dried to remove the solvent, and finally rolled into an electrode. In simple terms, the wet process requires liquid mixing, then coating, and finally rolling - a method of electrode production. The dry process, on the other hand, does not require making slurry, but directly rolls the electrode materials.

When I bought my car last time, I specifically asked the salesperson about this. The 1,500 km of free Supercharging provided by Tesla is valid from the day of vehicle delivery and must be used within six months. This credit is non-transferable and can only be used by the person who purchased the vehicle. For example, if you take delivery on February 1st, any unused credit will expire by July 31st. If you want to maximize its usage, I recommend avoiding peak holiday hours for charging, as the charging speed is faster and there's less traffic. By the way, the new policy now seems to offer direct points instead, with different models receiving varying amounts of points.

I've researched Tesla's free Supercharging credits, and there are three main points to note: the validity period is six months, starting from the vehicle delivery date; it's only for the owner's account and cannot be transferred to others; when using Superchargers, the free mileage is automatically deducted from the account. It's best to plan ahead and use them up during long-distance trips, as it's not cost-effective for short city drives. However, the charging fee after exceeding the limit isn't expensive, about 1.8 yuan per kWh.

To be precise, it's valid for 180 days, calculated from the date of the vehicle purchase invoice. I personally rushed to use it in the last month, going on three consecutive weekend road trips to exhaust it. Note that not all charging stations are free; you need to look for Tesla Superchargers. New owners might not get the mileage credit now, as it's been replaced with an owner points reward policy. Check the official website for details.


