Tesla vehicles have gained immense popularity due to their cutting-edge technology and eco-friendly nature. However, one of the concerns for Tesla owners is how to optimise the battery life of their vehicles. In this article, we will delve into the best charging practices for Tesla Model 3 and Model Y owners in Australia. We will also explore the differences between lithium-ion phosphate (LFP) and nickel Cobalt manganese or aluminium (NCM/NCA) battery chemistries and their charging requirements. By following these guidelines, you can ensure the longevity of your Tesla's battery and have peace of mind while driving.

Understanding Battery Chemistries

Tesla vehicles in Australia typically come with two types of battery chemistries. The rear-wheel-drive Model 3 and Model Y usually have LFP batteries, while the long-range and performance variants of these models, as well as Model S and Model X, are equipped with NCM or NCA batteries. You can easily determine your battery type by checking the charging graphic in your car. LFP batteries show percentages from 10 to 100, while NCM/NCA batteries differentiate between daily and trip ranges.

Charging Habits for Different Battery Types

The primary difference in charging habits between LFP and NCM/NCA batteries lies in the recommended charge levels. Tesla advises owners with LFP batteries to charge their vehicles to 100% at least once a week. This practice helps calibrate the battery and ensures accurate information regarding the state of charge. In contrast, NCM/NCA batteries should be charged to 80-90% regularly, reserving a full charge for road trips or when extra range is needed.

Reasoning Behind Charging Recommendations

LFP batteries exhibit stable voltage throughout their state of charge, except towards the end range. By charging to 100% once a week, the battery can calibrate and provide precise state-of-charge information. On the other hand, NCM/NCA batteries show increasing voltage proportionally to the state of charge. The battery management system of these batteries has more confidence in determining the state of charge, making it unnecessary to charge to 100% regularly. Additionally, NCM/NCA batteries become less stable at the top range, making frequent charging to 100% detrimental.

Phantom Drain and Leaving Your Vehicle Unattended

Phantom drain refers to the gradual discharge of a parked electric vehicle's battery, even when it is not actively used. If you need to leave your Tesla unattended for an extended period, it is advisable to plug it in. Whether you have an LFP or NCM/NCA battery, charging it to 80-90% before leaving is a good practice. Avoid leaving the vehicle plugged in at 100% for too long, as it can be detrimental to the battery's long-term health. In cases where plugging in is not possible, disabling Sentry mode can significantly reduce phantom drain. Alternatively, find a car park that allows you to plug in your vehicle or leave it with someone you trust.

Battery Life Optimisation

By adhering to these charging practices, you can optimise the longevity of your Tesla's battery. Regularly charging LFP batteries to 100% once a week ensures accurate state-of-charge readings and calibrates the battery. For NCM/NCA batteries, charging to 80-90% on a regular basis is recommended, reserving a full charge for specific needs. It is important to note that regardless of battery type, it is not ideal to keep the battery at 100% for extended periods.

Conclusion

Proper charging habits are crucial to maintaining the health and longevity of your Tesla's battery. Remember to plug in your vehicle when possible, charge to the appropriate levels, and avoid leaving the battery at 100% for too long. By taking these steps, you can enjoy the benefits of your Tesla for years to come while minimising battery degradation.