This phone from Samsung has a 4,000 mAh battery. Since the phone is water- and dust-proof (IP68), it can handle a bit of grime.
From Back Market
Galaxy Note9 128GB - Blue - Unlocked
Gadcet
Samsung Galaxy Note 9 Dual SIM 128GB 6GB RAM - Ocean Blue, New
Major Mobiles
Samsung Galaxy Note 9 Dual SIM Unlocked (Brand New), Ocean Blue / 128GB