# Why does my US Tesla charge at 3.7 kW on an 11 kW wallbox?

A recurring Tesla question from Bulgarian groups, with a stored short answer and sources.

- Locale: en
- Canonical HTML: https://usateslata.com/en/questions/tesla-11kw-stantsiya-zarezhda-37kw
- Markdown version: https://usateslata.com/en/questions/tesla-11kw-stantsiya-zarezhda-37kw.md
- Bulgarian version: https://usateslata.com/vuprosi/tesla-11kw-stantsiya-zarezhda-37kw
- Bulgarian version Markdown: https://usateslata.com/vuprosi/tesla-11kw-stantsiya-zarezhda-37kw.md
- LLM index: https://usateslata.com/llms.txt

## My answer

If the 11 kW wallbox supplies 16 A per phase and your car uses only one phase, you’ll get about 3.7 kW. To see if that covers your overnight top-up, check how far you drive each day and how long the car stays plugged in. That’s what I built the [home charging calculator](/en/tools/home-charging) for.

I cover home charging in more detail [in the full article](https://usateslata.com/en/updates/tesla-ot-sasht-telefon-klyuch-11kw-zarezhdane-tehnotest-karti-radio#home-charging).

## This project

- [Diary](https://usateslata.com/en/diary) — This car: EUR 25 356, 62 records. Open the diary.
- [Timeline](https://usateslata.com/en/timeline) — Now: I'm driving it. See the stages.
- [About](https://usateslata.com/en/about) — One car, not a market average. How to read the numbers.