The 2021 Battery Listing update.
(actually done before the end of the year for a change... because it is soooo tiny this year - the smallest year of electronic Transformers toys ever)

Hasbro Cyberverse 2019
2021 - Roll N Change - Bumblebee - 3xLR44 - I
2021 - Roll N Change - Optimus Prime - 3xLR44 - I

Dinobot Adventures (Rescue Bots)
2021 - Optimus Prime T-Rex - 3xAAA - I