This phone from ASUS has a large 4,300 mAh battery. A perfect phone for the kids, or to be used as an extra phone.
From Amazon
ASUS Zenfone 9 - 8GB RAM 128 Storage White - AI2202-1B008EU
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ASUS ZenFone 9 AI2202 5.92" Snapdragon 8+ Gen1 5G, 120z AMOLED, 8GB, 1