Interview with Craig Nicol In a recent video, CEO Craig Nicol highlighted that GMG "is sitting at 5-6x better energy density than any other graphene battery in the world." GMG's batteries also only use 1 electron so far and the company is working towards using all 3 which would improve energy density by up to 3x.
https://www.youtube.com/watch?v=_cm3NlQUZlA