Dell g3 15 3579 Battery issue and Original battery is not available.

I'm having the battery drain issue, I am having Dell G3 15 3579.

Its showing me battery manufacturers - Samsung SDI

Serial Number - 115D

It says battery health is poor in bios as well as on the Dell power manager.

It says I need to replace this battery but when I diagnosed laptop using support assistant for my service tag number there's no parts available.

How to find the exact matched original battery for this?