This advance civilization would probably be still using lead acid or alkaline since there is no incentive to do further. They would even be surprised at us putting lithium in our devices.
This advance civilization would probably be still using lead acid or alkaline since there is no incentive to do further. They would even be surprised at us putting lithium in our devices.
This makes me think of the Stargate SG-1 episode where the Asgard need the help of SG-1 to battle the replicators because the Asgard don’t have guns and other ballistics that have proven effective in destroying the replicators.