I wake up every morning to my my charge being less than my set point.

[ratsbew]

I set my charge limit to 60% and according to TeslaFi (see image) it gets there. My problem is that every single day I'm losing about 2kWh for seemingly no reason. Is there any explanation to this behavior??

I've also seen a recent threshold shift on my battery capacity that correlates to a road trip with Supercharging and a 100% charge.

Thoughts and comments?
-Thanks

 

[jjrandorin]

Beside the teslafi monitoring you mean?

 

[omgwtfbyobbq]

It's just because the charge estimate is based on pack voltage, and that settles/evens out after a charge. The higher the charge rate/voltage, the bigger the drop after charging.

 

[ratsbew]

I guess my problem is that this is new behavior. Previously, 60% would stay at 60%, but now I'm losing 2kWh in a matter of a few hours. I charge at 4kW (16 Amps) so it's about as gentle of a charge cycle as you can have.

 

[ewoodrick]

Just don't worry about it. And you really need to bring your battery to 100% periodically, You seems to be keeping at 60% to protect your batteries, but you may be doing more harm by not allowing the BMS to work at 90-100%

 

[ngogas]

Charge it to 90% and don’t worry about it.

 

[omgwtfbyobbq]

I guess my problem is that this is new behavior. Previously, 60% would stay at 60%, but now I'm losing 2kWh in a matter of a few hours. I charge at 4kW (16 Amps) so it's about as gentle of a charge cycle as you can have.

You could try charging off of 120V to test it. If you're still losing 2kWh, I think you're right that the issue is something else. If you lose less energy, I suspect it's related to pack voltage settling.