I bought a replacement battery that was not OEM off eBay. After about 4-6 months of use, the thing nearly blew up on me. The battery got so hot it could’ve started a fire. Seriously, spend the extra money, its not worth the risk.
If you’re buying a replacement make sure it meets the safety standards and it is approved for use. I’m going to be buying only OEM batteries/chargers from now on.
I mean many chargers/power supplies have and follow standards, ESPECIALLY if its a USB-PD compliant charger. batteries have a lot of wild west aspects to them. Bundling both in the way OP has it is not the way to go.