Power Cell

A Power Cell is an object in The Sims 3: Into the Future.
It is only seen as part of the first opportunity that is given when inspecting a Wellsian Time Portal. If the opportunity is accepted, 8 or 9 power cells spawn on the lot, and 5 of them have to be picked up to complete the opportunity. A power call is worth §100, but cannot be sold without cheats.
Once the opportunity is completed, power cells will never show up again for the active household that inspected the portal.