

If I had to build such a system, instead of a few satellites with really big mirrors I’d instead have a massive number of small satellites with smaller mirrors. Obviously then any area I’d want to light up, I’d have to hit with a number of the satellites - probably dozens at least or even hundreds of them for decent sized area. That would at least alleviate a few of the problems - aiming would be easier. As satellites move out of range new satellites would be moving in range. Long shadows from the angle of satellite near the edge of their range wouldn’t be as much of a problem as I’d be hitting any spot from a variety of angles. That the satellites would be useless for about 75% of their orbit I could make up for by launching even more satellites.
Of course, it would still be hugely impractical and there would still be major limitations. I’m still not sure how you could manage the aiming - the satellites would have to be continuously adjusting their aim to track their target. Reaction wheels can only do so much and using thrusters you’d burn through propellant like crazy. Launching the required array of satellites would be outrageously expensive and you’d need thousands of them. Eventually something would go wrong - you’d have a collision or one would break up and you’d Kessler yourself right out of business.










The battery has a charge curve. What does the most wear or damage to the battery is the ends of the curve - either deep discharging the battery or charging it up fully to the point where it cannot take any more charge. It’s up to the manufacturer where they want to put 0% and 100% on the curve - to protect and extend the life of the battery most manufacturers don’t put 0% and 100% at the extreme ends of the curve.