DSLR Battery Holder 4 Fits Two Standard DSLR Batteries – Think Tank Photo
Amazon.com : NEEWER Vertical Battery Grip Compatible with Canon EOS 800D Rebel T7i 77D Kiss X9i 9000D Cameras, Battery Holder with Two Compartments for 1 or 2 LP-E17 Battery (Battery Not Included) :
Meike MK-70D/80D Battery Grip Holder For Canon EOS 70D/80D Cameras - FOMITO.SHOP
Amazon.com : NEEWER Vertical Battery Grip Compatible with Canon EOS 800D Rebel T7i 77D Kiss X9i 9000D Cameras, Battery Holder with Two Compartments for 1 or 2 LP-E17 Battery (Battery Not Included) :