No issues, use your NV as long you mentioned you're not training on a bright light source. Modern AG power supplies are quite good.

Like art and pornography, it’s sometime different to articulate the difference between “stupid” and “practical” in clear terms, but practically speaking, a good modern device, particularly an autogated one can be used in mixed light conditions with street lights, vehicle headlights, and other various environmental artificial light in an urban or suburban environment without issue as long as you don’t do something stupid.

As others have mentioned, as long as you’re not staring fixatedly on an intense light source, you will most likely be fine. In an urban area, you might get occasional residual “streaking” as you scan, but by and large, those will usually disappear in a matter of seconds or minutes.

Ultimately, the truth is that the lifespan of tubes is in fact finite. Fortunately, finite as though it may be, the lifespan of a good, modern tube is quite long, and will give you many years of good use, even using them every night for hours.

To me, it’s sort of like a car... no car will last forever, but you’re still going to spend a good bit of money on one in the hopes of getting many years of use out of it. On the one hand, you can baby it because it’s a significant investment, and never really get any use or enjoyment out of it other than pride of ownership, or you can drive the crap out of it, put 100,000 miles on it in five years, and trade it in at a loss for something newer, and continue to enjoy what you have. All those years later, which are you going to think was the better investment? The show piece that you’ve put less than a thousand miles on? Or the one that took you on road trips to every exciting destination, and carried your family to make cherished memories, and very possibly contributed to your livelihood if you used it for/to get and from work? Some people are car collectors and have cars that they only use for special occasions/purposes, and I get it, but almost everyone still had to have a workhorse. And just like a car, using the dogshit out of it doesn’t have to mean you abuse it or don’t take care of it, proper care and maintenance is important, even if you know it’s not going to last forever, but it can’t make you afraid of using it.

~Augee