This technology was originally developed by archotechs, and is still beyond most glitterworld societies.
While no one has been able to perfectly recreate the Vanometric ZPM, scientists have managed to uncover many secrets of its internal crystalline structure.
Though inferior to the original, it is currently the most energy-dense storage medium available.
It should be noted that even when properly connected, the unit continues to report erroneous status messages indicating to the contrary.
While this persistent error has shown to be harmless it continue to baffle researchers.
Though many simply caulk it up, along with other erroneous status messages, as archotech shenanigans.
Warning: The resulting explosion from mishandling have been known to devastate entire regions. Prevent damage to this device at all costs.
TLDR:
A Battery Mod with 100,000 Storage Capacity that also Generate a bit of Power as a Bonus. Also hits like a Nuke when it goes Boom.