Titans Grave: The Salvage of Cortana
These weapons can use battery power to sheath the damaging part of itself in energy, which makes them more potent in melee. Turning on a power weapon is a free action and it costs 1 battery charge to power one for 1 minute (or part thereof). Any melee weapons except fists and improvised weapons can be made into power weapons. They deal their normal damage +2.
For example: A Collection of Relic Blades.
Relic Blade | Relic Blades Group (Acc) | 2d6 +2 |Min Str: 0 | Ultra Rare Relic Item not sold on the open market.