The cambrinth orbs that power the defenses are running low, and they must be recharged roughly twice a week. Why wait? Make tonight (5/6) your night to do something for the greater good.

Located at the west cambrinth orb!

From the main stairs, it's go arch, go arch, north all the way, west once, and up the stairs twice.

Tonight (5/6), 10 PM EST. Recharge Your (Temple) Batteries!

http://www.elanthipedia.com/wiki/RanikMap2