DSTE Canon Battery Grip To Increase DSLR Battery Life For Canon EOS 77D (2019) - YouTube
Vivitar Viv-pg-t7i Battery Grip For Canon Eos T7i & 77d With Two Cb-e17 Replacement Battery, 1 - Fred Meyer
Vello BG-C15-2 Battery Grip for Canon Rebel T7i and 77D BG-C15-2
Vello BG-C15-2 Battery Grip for Canon Rebel T7i and 77D BG-C15-2
Jintu Vertical Shutter Battery Grip Holder For Canon Eos 800d/rebel T7i/77d/kiss X9i Dslr Camera - Battery Grip - AliExpress
Neewer Vertical Battery Grip with Battery Holder Compatible with Canon EOS 800D/Rebel T7i/77D/Kiss X9i/9000D, Work with 1 or 2 Pieces Canon LP-E17 Battery (Battery Not Included) - Walmart.com
MeiKe (Neewer) BG-E9 Battery Grip for the Canon 60D: Cheap but Good - Light And Matter