On December 29, it was reported that Tesla updated the user manual of the American Model 3 owner, and the most important adjustments were:
"If your vehicle is equipped with lithium iron phosphate batteries, Tesla recommends that you set the charging limit to 100%, even for daily use, you should fully charge it to 100% at least once a week."

Domestic Tesla Model 3 and Model Y have used lithium iron phosphate batteries, and the Model 3 sold in the US market will also use this battery.
For the Model 3 equipped with a ternary lithium battery, Tesla has suggested that most of the time charging to 80%-90% on the line, if long-distance travel is recommended to fully charge to 100%, but obviously this car guidance does not apply to lithium iron phosphate Model 3, so Tesla updated the user manual, in order to maintain the health of the battery for a long time.
In addition, Tesla also gave two other suggestions, one is that if the Model 3 is parked for more than a week, the owner can drive as usual, but it is necessary to recharge to 100% as soon as it is convenient.
On the other hand, Tesla advises car owners not to start "sentinel mode" in a safe place, and if possible, it is best to disable the mode and let the Tesla Model 3 "sleep" regularly.
According to Tesla's official statement, if the owner follows the above recommendations, it can maximize the mileage of the vehicle and improve the vehicle's ability to accurately identify the charging status and estimate the mileage.
Users of domestic lithium iron phosphate Tesla Model 3 can also refer to the above official suggestions, after all, the life of the tram power battery is limited, and the whole set of replacement is indeed not cheap.