DSTE Canon Battery Grip To Increase DSLR Battery Life For Canon EOS 77D (2019) - YouTube
Amazon.com : 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) : Electronics
Canon 77D Review: Rebel in disguise?
Canon 77D Review: Rebel in disguise?
Vertical Battery Grip Eos 77d | Canon Eos 77d Battery Grip - Eos 77d Vertical Battery - Aliexpress
Jupio Battery Grip for Canon EOS 77D / 800D / 9000D / T7i / X9i