Tesla Model 3 has clocked a mileage of 203,000 with minimal battery degradation of just 9%, challenging the widely discussed '80% Rule' that applies to Chevrolet Equinox EV batteries.

In the world of electric vehicles (EVs), maintaining battery health is a top priority for many enthusiasts. Four-time EV owner Rick Malek, the pilot of a Chevrolet Equinox EV, is no exception. His Tesla Model 3 has clocked an impressive 203,000 miles with only 9% battery degradation, a testament to his careful charging habits.

Malek advocates for the ABC rule: Always Be Charging. However, he cautions against charging fast at home just to let the vehicle sit fully topped off. Instead, he suggests charging to 60%, discharging to 40% for a car that drives 60 miles a day.

Another longtime EV veteran, Kevin Wall, drives less than 10 miles a day and follows the "50% lifestyle". Wall, who currently owns an Equinox EV, an EV6, and a Model X, sold his 2015 Model S at 100k miles with 95% battery health. For longer trips, he advises using the whole battery.

EV batteries gradually lose capacity over time, typically 5-10% after 100,000 miles, depending on usage, heat, and charging habits. However, real-world studies show most EVs retain 80-90% capacity after 8-10 years. EV manufacturers use battery management: thermal controls, charge balancing, and software limits to mitigate faster battery wear.

Bart Spainhour, another Equinox EV owner, warns against discharging too low and advises against going below 15-20% ever. Joseph Cool summed up the discussion by stating that most people should keep their EV's state of charge between 80-20 or 70-30 for optimal battery lifespan.

However, the 80% Rule in the EV world is considered a misunderstood and partially true old wives' tale. Malek advises against being afraid to charge past 85% if needed, but using the ABC rule is critical when using the entire pack. If a Level 2 charger doesn't have the ability to adjust the amperage, Malek suggests getting one that does.

Malek believes that most EV battery failures happen early, within the first 50,000 miles, usually due to a manufacturing defect or a bad cell. Sitting at any state of charge is sub-optimal, according to Malek. The battery in a car is not fully charged when the dashboard says 100%, nor is it fully discharged at zero.

In conclusion, careful charging habits, regular use, and avoiding extreme states of charge can help extend the life of an EV battery. While there are many misconceptions about battery management, following the advice of experienced EV owners like Rick Malek and Kevin Wall can help ensure a long and healthy life for your electric vehicle.

Tesla Model 3 has clocked a mileage of 203,000 with minimal battery degradation of just 9%, challenging the widely discussed '80% Rule' that applies to Chevrolet Equinox EV batteries.