You should consider carrying more than 1 light and extra batteries
There's the searchlight I'm looking for and the mini mags or inova clones we carry. Dont like them photon lights. 5 LEDs are better than 1. Unless of course its a Luxeon star.
What is the difference between exploring at night and during the day? It seems you might miss a lot at night
I recce and explore in the day for scenery and stuff. Going at night is different. There's a different "feel". Especially when one is exploring underground bunkers left over from WW2 and cemeteries.