This phone from Oppo has a large 4,025 mAh battery. This model packs some great hardware with a 2.4 GHz octa core processor.
From Amazon
OPPO Find X2 Lite 5G - Qualcomm® Snapdragon™ 765G mobile platform 6.4 inch 4250 mAh 48MP Camera Smartphone – black
Clove Technology
Oppo Find X2 Lite - UK Model - Single SIM - Moonlight Black - 128GB - Fair Condition - Unlocked