Automate Charge Limit Changes

App settings
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The extract below outlines how to optimise LFP battery life for my Tesla Model 3. It involves setting a normal charge limit of 80%, but charging to 100% once per week.

Charge HQ could theoretically be designed to manage this, but the current functionality cannot as far as I can see.

I use solar tracking for charging and the charge limit is fixed by the Tesla app. There appears to be no way of altering charge limits automatically via the app (eg 80% weekdays and 100% on weekends etc). Am I wrong?

I’d suggest that this would be a very desirable feature for all of us attempting to optimise our battery life.

Thanks

Battery Optimisation

To optimise the life of lithium-ion phosphate (LFP) battery, charge to 100% at least once per week. This helps recalibrate the battery management system for accurate state of charge readings.

Between those weekly 100% charges, it’s recommended to keep the state of charge between 20-80% as much as possible. Avoiding very high (above 90%) or very low (below 20%) states of charge will reduce battery degradation.

Also, don’t leave the car plugged in at 100% state of charge for extended periods. Once fully charged, either unplug or use the Tesla app to set charging limits to stop at a lower state of charge like 80%.

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@paul.blake.1005 can you please share the link to where you got the extract?

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Ia there any plan to develop this feature admins?

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Just letting you know if you have an iPhone you can achieve this through shortcuts automations. Tesla app has the shortcuts to set the charge limit at a specific value. Just run it twice, once to set to 80% at a specific time, once to set it back to 100%.
I tested it this week and it seems to work.

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Thanks for the suggestion. I haven’t played with shortcuts before. I set them up OK and added an automation to automatically run the 100% shortcut each Friday and the 80% each Saturday. It should now charge to 100% on one day each week.

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Sorry for the very late response! I couldn’t find the article again, but now Tesla’s app specifically recommends charging to 100% just once per week (for battery calibration purposes). The preferred normal range is 20%-80%.

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