This Datacron unlocks the codex entry - Galactic History ??: ??
You need to find an Ancient Probe that wanders around the Clabburn Tundra in western Hoth. The Ancient Probe is a level 47 Champion mob that is commonly found in the western end of Clabburn Tundra wondering on the border of the exhaustion zone (Screenshots 1, 2 & 3). He drops a Depleted Datacron which you need to charge at the Coupled Recharge Station in the Starship Graveyard to retrieve the Strength Datacron. Once you have the Depleted Datacron you need to take it all the way to the Starship Graveyard over to where I am in (Screenshots 4 & 5).
Here you will see a large pipe which you need to run up. At the top of the pipe turn around and run across the ledge leading towards the Star of Coruscant (Screenshot 6). Follow the ledge all the way down to where I am in (Screenshot 7), here is where you'll want to fall down to the pipe right below which puts you in the vicinity of the Coupled Recharge Station. From where I am standing in (Screenshot 8) you will be able to activate the station.