Battery replacement for MacBook Pro 2017 compatible with 2019 model?

Frankly your should get your system serviced by Apple under warranty!

You likely have something more wrong than just a bad battery. Either the sensor logic within the battery or SMC charging logic within the logic board has issues.

I would install this gem of an app! CoconutBattery to have a better tool to monitor the battery as well as get a USB-C power meter like USB-C Tester DC Digital Voltmeter.

If you really can’t get to an Apple Store or authorized service center then here is the correct battery MacBook Pro 15" Retina (Mid 2018-2019) Battery and here’s the guide to put it in MacBook Pro 15" Touch Bar 2019 Battery Replacement

Carefully review the guide and consider your skills, between the costs and the risks I think its smarter to get it fixed under warranty >> FREE !! << Even if they give you a hard time, be polite but firm! Push your case up the food chain until you get a yes! This is clearly a product defect.