See what your Tesla reports about its battery.
On supported models, TSLAIQ for iPhone uses a compatible adapter to record full pack capacity, fault codes, and available cell group voltages. Raw cell group data only syncs to the web account when the owner opts in. The app sends no vehicle commands.
TSLAIQ is currently in a closed trial.
Battery record example
Example capture date: June 1, 2026
BMS full pack capacity
Source: battery management system
Reference capacity when new
Source: pack reference used for this example
Calculated battery health
72.9 ÷ 86.0 = 84.8%
Method: energy capacity
Calculated by TSLAIQ
See how one result is built.
Recorded values show their capture time and source. When either is missing, the interface marks that detail as unavailable.
Recorded input
The scan records full pack capacity, its capture time, and the battery management system as the source.
Reference value
The reference capacity stays separate from the value recorded from the car, with its source shown alongside it.
Calculated result
TSLAIQ shows the formula and method, and marks the result unavailable when either input is missing.
How TSLAIQ records a scan.
Compatible setup
A scan requires a supported model, year, and compatible diagnostic adapter.
Record
The iPhone app records available battery and vehicle data.
Review
Recorded values include their source and capture time when available.
Shop and fleet tools are in development.
The working design applies the same source and capture date detail to signed battery records, public verification, and fleet views.
Looking up a VIN?
VIN Reports is a separate TSLAIQ service that checks available records for a Tesla VIN without connecting to the car.