Why is my Tesla charging slowly?

Slow charging usually has a simple cause. Work down this list.

At a Supercharger or rapid charger

1. The battery is cold. The most common cause in the UK from October to April. Navigate to the charger in the car so it preconditions, or use the manual preconditioning option for non-Tesla chargers.
2. The battery is already full-ish. Above 80%, every Tesla charges slowly. This is normal.
3. You share power with the next stall. On older V2 Superchargers, two stalls (1A and 1B, for example) share one cabinet. If another car is on your pair, you split the power. See Supercharger stall pairing.
4. The site is limiting power. Some busy sites and some rapid chargers on weak grid connections cap the speed.
5. The charger is slower than you think. A 50 kW rapid charger gives a Tesla about 40 to 45 kW.
6. Your car's own limit. Standard Range and RWD cars with LFP batteries peak lower than Long Range cars. See the model guides.

At home or on AC chargers

7. Single-phase power. Most UK homes are single-phase, so the maximum is about 7 kW even on an 11 or 22 kW-rated charger.
8. The current is set low. Check the amps on the charging screen. The car remembers the setting for each location.
9. Hot weather or a warm cable. The car or charger may reduce current to keep cool.

Still slow?

Try another stall or charger. If the car is consistently slow everywhere, book a check through the Tesla app's Service menu.