Although we have analyzed numerous user datasets and real-world cases, this is the first time we have personally observed the same issue on our own vehicle. This gives us a valuable opportunity to study the problem not only from the developer’s perspective but also as an actual owner experiencing it firsthand. To share some background: the vehicle was purchased used in June of last year with about 120,000 km. It has mainly been used for development, and the annual mileage is

People use their batteries very differently. Some may only consume 10% in a day, others 50%, and some even require more than a full charge daily. So why does Tesla set 80% as the default charging limit for most users? From a battery health perspective, 50% state of charge is actually the most stable. But if a manufacturer simply told users to "keep your battery around 50%," most people would find that confusing and difficult to apply in real life. That’s why 80% has become th

When you think about it, most electric vehicles spend far more time parked than being driven or charged. It may sound surprising, but a...

When it comes to Tesla's electric vehicle (EV) batteries, many owners may notice that the actual usable battery capacity doesn’t always...

Tesla owners often assume that if their vehicle isn’t driven frequently, their battery isn’t deteriorating. In reality, lithium-ion...

Usable State of Charge (SOC) Definition:  Usable SOC  is the battery percentage that reflects the usable energy available for driving, as...

How Tesla Calculates Usable vs. Rated SOC and Range Estimates (Summary) 1. Usable State of Charge (SOC) Definition: Usable SOC shows the...

The motivation for this article on Tesla batteries arose from common user queries regarding the accuracy of SoH measurements based on...

The reason I started looking into this is that I’ve recently seen many posts about Tesla battery replacements. I wanted to compare that...

Many EV owners today are increasingly aware of battery management—how to charge, when to fast charge, and how to extend battery life....

This article aims to address widespread misconceptions about Tesla battery management, specifically regarding supercharging  and battery...

Batteries have become the unsung workhorses of modern life, powering everything from smartphones to electric cars. The lithium-ion...

As experienced BMS engineers and scientists, we have incorporated extensive expertise and research into creating the Dr.EV app,...

This guide outlines 10 common charging issues  faced during both AC (1–5)  and DC fast charging (6–10) , along with their causes and...

We introduced Tesla real-time charging monitoring after recognizing that many users experience issues such as charging compatibility...

Average predicted State of Health (SOH) for Tesla vehicles by model year, based on standardized odometer readings (10,000, 50,000,...

Vehicle and battery information NCM Model:  2020 / 118,030 km, SOH 83.1% LFP Model:  2022 / 121,104 km, SOH 93%   LFP (left), NCM...

The analysis presented above is an actual case demonstrating the advanced battery diagnostics and management recommendations provided by...

Initial range reduction is a natural phenomenon commonly observed in electric vehicles. Among Tesla owners, some have reported that the...

It’s impossible for all cells to behave identically • Battery cell production involves complex chemical processes (e.g., electrode...