2018 15” MacBook Pro power on and fails to battery charging

Oliver Attias wrote:

My 2018 dose not turn on and will not charge the battery and will not power on with the charger plugged into it.

If your Mac doesn't turn on

If your Mac doesn't turn on - Apple Support

On a Intel Mac you can try both

Try resetting the SMC How to reset the SMC of your Mac - Apple Support

Try resetting NVRAM/PRAM Reset NVRAM or PRAM on your Mac - Apple Support

(get at least two-three rounds of the chimes when holding the NRAM Reset)

In or out of warranty you can get a free over the counter 'Apple Service Diagnostics' test /assessment

Make an appointment for a "hardware issue"

Genius Bar Reservation and Apple Support Options - Apple

Outside the USA

https://locate.apple.com/country

if no resolve—

Learn how to get your Mac fixed and how much it will cost. Mac Repair Service Mac Repair - Official Apple Support

Get your Mac ready for service - Apple Support Get your Mac ready for service - Apple Support