Two issues with the static codelocks at the bunker entrances on Nasdara (the morse code ones).
There is no attachment slot for 9V Batteries in the Vicinity view, so Players don't get a clue that you need to manually attach a 9V Battery. The Codelock and the Battery Slot should appear in the Vicinity, so you can drag a Battery from your Inventory to the Codelock.
When you attached the 9V Battery it's gone! No way to get it back again