Find Tesla phantom drain every time you park.
Wake up to less battery? VoltKeep helps you track parked battery loss and spot patterns before they become surprises.
Before fixing phantom drain, measure it
Sentry Mode, Cabin Overheat Protection, poor LTE reception, preconditioning, and third-party polling can all wake the car. VoltKeep records parked battery loss so you can tell normal standby loss from a pattern worth investigating.
Log each parked session
See how much battery disappeared between parking and the next drive.
Spot abnormal loss
Separate normal standby drain from parking sessions that deserve attention.
Verify your fixes
Compare parked drain before and after changing Sentry Mode or app polling.
How it compares
| Method | What it does | Limitation |
|---|---|---|
| Tesla app | Shows current battery state | Hard to compare parked sessions over time |
| TeslaMate | Detailed sleep/wake visualization | Requires your own server stack |
| VoltKeep | Tracks parked battery loss on iPhone and flags phantom drain patterns | Not a service-center diagnosis; it is day-to-day trend tracking |
Learn more
For a detailed explanation of causes and fixes, read the full phantom drain guide and FAQ.
FAQ
Is phantom drain tracking free?
Basic parked battery tracking and phantom drain detection are available on the free plan. Some AI analysis features are Pro-only.
Can it show the effect of Sentry Mode?
By comparing parked sessions before and after changing settings, you can see whether Sentry Mode or Cabin Overheat Protection is contributing to the loss.
Is this a service-center diagnosis?
No. VoltKeep is for day-to-day trend tracking. If abnormal battery loss continues, contact Tesla Service.