VoltKeep Blog

Data and Practice for Tesla Owners

Efficiency, battery, phantom drain, driving data analysis.
Practical articles for Tesla drivers, grounded in real measurements and primary sources.

Why Is My Tesla Efficiency Bad? 7 Things Model 3/Y Owners Should Check

Cold weather, speed, tires, HVAC, route elevation, parked drain, and regenerative braking — the practical checklist before assuming battery degradation.

How to Track Tesla Driving Data: Trips, Efficiency, Routes & Battery Trends

The official Tesla app is great for control, but not for long-term history. Learn how to track trips, efficiency, routes, parked battery loss, and monthly trends without running TeslaMate.

Best TeslaMate Alternatives for iOS in 2026: HedgieMate vs Mytess vs VoltKeep

Tired of running Docker for TeslaMate? We compare three iOS alternatives by features, price, connection type, and language support — and explain which option works best without a server.

Tesla Phantom Drain: 6 Causes & 5 Solutions [2026 Guide]

Why your parked Tesla loses battery overnight. The difference between phantom drain and phantom braking, six common causes (Sentry Mode, Cabin Overheat Protection, etc.), five practical fixes, and how VoltKeep auto-detects it.