Razer Blade 15 (2019) - Advanced Battery Replacment Purchase

I'm looking to replace the battery in my Razer Blade 15 (2019) - Advanced, specfically RZ09-03137. This battery does not match the listed compatibility of the Advanced battery offered by Ifixit. I have found a battery that claims to be compatible from another seller that looks nearly identical (80Wh vs 80.2Wh). I would prefer to get a battery from a reliable source, would the Ifixit battery be a safe purchase, and/or is batterybuy.us a reliable seller?