I noticed (as discussed in other threads) there is No (reasonable) way to see the damage of crystals:
not in hangar
not in cargo
not hovering mouse over it
not even RMB info
The only way is to load it or to make a contract.
Suggestion: do this;
The red number could be ‘pulsating’ to draw attention to it since its rather it is rather important.
How this got away for 20 years is beyond my understanding.
Doesn’t the current HP show up in the info panel for the crystal? It used to, though I do not have the game installed to check if it still does. I believe it’s called ‘structure hitpoints’ or similar. Not as easy as a % shown on the icon, but you neither have to load it nor contract it.