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Battery Imbalance: The Hidden Reason You’re Losing EV Range
It’s impossible for all cells to behave identically • Battery cell production involves complex chemical processes (e.g., electrode...
rory lee
Jun 12, 20253 min read


💡 Extend Battery Life with Dr.EV and Save Up to $2,500
Tesla battery replacement typically costs around $15,000 . Most EV batteries are considered end-of-life when the SOH (State of Health)...
rory lee
Jun 5, 20251 min read


Tesla Battery Health Test: Procedure, Principles, and Real-World Results
Many users have already conducted the Tesla battery test themselves, but some still do not fully understand the procedure. This post aims...
rory lee
May 29, 20253 min read


Model 3 Standard Range – LFP vs NCM
📌 Vehicle Info NCM Model: 2020 / 118,030 km LFP Model: 2022 / 121,104 km ⚡ SOH (State of Health) NCM: 82.7% LFP: 93.0% 🔍 Key...
rory lee
May 15, 20251 min read


Is there ‘luck of the draw’ with batteries too?
The difference in battery capacity, often referred to as "luck of the draw" among general users, is actually a natural result of...
rory lee
Apr 23, 20251 min read


The Season of Efficiency: Why Driving Range Increases in Spring
When the weather gets warmer, many EV drivers refer to it as the “season of efficiency.” In fact, there are two primary reasons why the...
rory lee
Apr 21, 20251 min read


Battery Degradation Characteristics by Tesla Model Y Specification
In this article, we will focus solely on battery degradation , among the various factors that affect EV performance. Please note that the...
rory lee
Apr 19, 20252 min read


🔋 Understanding Phantom Drain and Phantom Charge: Battery Behavior During Idle State
When a vehicle is parked or in standby mode, a decrease in the battery's state of charge (SOC), known as phantom drain , or an increase,...
rory lee
Apr 17, 20251 min read


Why a Hard Reset is Dangerous When a BMS Error Occurs
Unlike typical electronic devices, the Battery Management System (BMS) is designed to meet the highest automotive functional safety...
rory lee
Apr 16, 20251 min read


How to Charge and Maintain Your Battery
We’d like to explain the best charging and usage practices for your battery in the simplest way possible, without using engineering...
rory lee
Apr 13, 20252 min read


How to Estimate Used EV Battery Life with a Simple Calculation
Hello, this is Dr.EV. Today, we’ll introduce a simple way to estimate the battery life of a used electric vehicle based on basic vehicle...
rory lee
Apr 13, 20252 min read
100% Charging and Safety Margin (Error Margin)
Hello, this is Dr.EV. In this article, following our previous discussion on “battery charging and management methods,” we’ll explain the...
rory lee
Apr 13, 20253 min read


Battery Health Recommendations
Battery life naturally decreases over time and with cycle count, as outlined in the Manufacturer's warranty based on years and mileage....
rory lee
Feb 23, 20251 min read


Causes of electric vehicle fires during charging and parking, and prevention methods
I created a PowerPoint animation about the causes of electric vehicle fires during charging and parking, and prevention methods, making...
rory lee
Oct 13, 20241 min read


Optimal Cell Balancing Method for LFP
If you follow the steps below, cell balancing will be maximized, and the SOC algorithm will be accurately calibrated. Prepare to charge...
rory lee
Oct 11, 20241 min read


Optimal Cell Balancing Method for NCM
Prepare to charge at a 20% level. Wait for 2 hours. Set the charging current to 5A. Charge up to 90%. Wait for 2 hours.
rory lee
Oct 11, 20241 min read


the reasons behind the sudden changes in battery charge and driving range
There seem to be many people curious about the reasons behind the sudden changes in battery charge and driving range, so I would like to...
rory lee
Sep 16, 20242 min read


LFP vs NMC for EV users.
The presentation aims to explain why manufacturers recommend charging LFP batteries to 100% and to highlight the key differences between...
rory lee
Jul 21, 20242 min read
Common Sense Guide to EV Cell Balancing
Q1: Does cell balancing move energy between cells? A1: Cell balancing includes Active cell balancing and Passive cell balancing. The...
rory lee
May 15, 20242 min read
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