BMS family
BMS_a076_SW_Dch_While_Charging
Weak power source
What does the BMS_a076_SW_Dch_While_Charging alert mean?
The battery management system (BMS) detects that the high voltage (HV) battery is not charging enough while in a charging state.
What you'll see in your Tesla
- Weak power source
- Unable to charge battery
What triggers it
The BMS detects that the HV pack has been discharged to below the set threshold while charging.
When it clears
The BMS detects that the condition clears.
Potential impact
Inability to charge
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.