Power Bank

Power banks can store large amounts of power.
 * Maximum power storage (Tier 1, Iron): 300000
 * Maximum power storage (Tier 2, Gold): 350000
 * Maximum power storage (Tier 3, Diamond): 500000
 * Power banks input power through the note block and output power through either crafting table.
 * Place a sign on the note block of the multiblock and write  on the first line.