Battery Case for iPhone X/XS, 4000mAh Portable Protective Charging Case Extended Rechargeable Battery Pack Charger Case Compatible with iPhone X/XS /10 (5.8 inch) https://www.amazon.com/dp/B07HK2JB2Q/ref=cm_sw_r_cp_api_glt_fabc_BJBSWHZE4A5RNBG20Z2Q?_encoding=UTF8&psc=1

This one looks good