Supercharger etiquette and tips most Tesla owners learn the hard way

I've used Superchargers across Southern California hundreds of times. The number of Tesla owners who don't know basic Supercharger behavior is staggering. I'm talking about the technical realities that affect how fast you charge, how much you pay, and whether you're accidentally degrading your battery.

How Supercharger power splitting works

Most Supercharger stations use paired stalls—1A/1B, 2A/2B. Each pair shares a single power cabinet. If you pull into stall 1A and someone is already in 1B, you're splitting the available power. Instead of getting 250 kW, you might get 120 kW. Pick a stall where the paired slot is empty. This alone can cut your charge time by 30-40%.

Idle fees and how to avoid them

Tesla charges idle fees at $1.00 per minute at busy stations when your car is done charging but still occupying a stall. Set your charge limit to exactly what you need and set a phone alarm for 5 minutes before estimated completion.

Battery temperature and charge speed

Your battery charges fastest when it's warm—around 95-115°F internal temperature. If you've been parked overnight in 50°F weather, the car will spend 10-15 minutes warming before ramping up. Use 'Navigate to Supercharger' to preheat the battery en route. This can save 15-20 minutes.

The 80% rule and when to break it

Charging slows dramatically above 80%. From 80% to 100% takes almost as long as 10% to 80%. For road trips, charge to 60-80% at each stop and make more frequent stops. Only exception: stretches with no Superchargers for 200+ miles.

• ✓Pick unpaired stalls (if 3A is taken, use 4A not 3B)
• ✓Set charge limit to what you actually need, not 100%
• ✓Use 'Navigate to Supercharger' to preheat the battery
• ✓Set a phone alarm before estimated charge completion
• ✓Don't unplug someone else's car—ever