Samsung Galaxy S9 Plus (SM-G965F) Battery EB-BG965ABE 3500mAh GH82-15960A
Official Samsung EB-BG960ABE Battery 3000mAh 4.4v For Samsung Galaxy S – Fonehaus
Amazon.com: Trswyop Battery Case for Samsung Galaxy S9,[6000mAh] Portable Charging Case External Battery Pack for Samsung Galaxy S9 Rechargeable Charger Case (5.8 inch) Black : Cell Phones & Accessories
How to Replace the Battery on a Samsung Galaxy S9 - YouTube