MyTeslaMate
BMS family

BMS_a065_SW_CAC_Imbalance

Not Available

What does the BMS_a065_SW_CAC_Imbalance alert mean?

The Calculated Amp-hour Capacity (CAC) difference of bricks within a module exceeds the acceptable threshold. This results in reduced battery performance and limits maximum range.

What you'll see in your Tesla

  • Not Available

What triggers it

The estimated imbalance between the average CAC and minimum CAC within a single module exceeds the imbalance threshold.

When it clears

The estimated imbalance between the average CAC and minimum CAC within a single module is within the acceptable imbalance threshold.

Potential impact

Maximum charge and discharge current limits and maximum energy available are reduced, causing reduced battery performance and reduced maximum range.

Affected models

Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+

Track your Tesla's alerts automatically

Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.