Just bought this, it gets me through the day....

"Galaxy S5 Battery/JUBOTY 6400mAh Replacement Battery for Samsung Galaxy S5 I9600 G900H G900V G900A G900T G900P with Back Cover and TPU Case/S5 Battery(24 Month Warranty) https://www.amazon.com/dp/B07BNDD9R5/ref=cm_sw_r_cp_apa_i_7oBHCbNZ8QJZR"

Edit: it's much chunkier than OEM and comes with enlarged case to accommodate