An 18650 light with battery level indicator and USB charging might help in this situation. My twins with disabilities are getting a Convoy S9 and a Sofirn SP30A to try out and see which one they like best. Both with protected 18650.

I figure with a protected battery and indicator on the switch, they won’t let the battery get too low (that’s similar enough to their tablet and phone). And they won’t need to take the battery out, so no chance of reversing it.

The USB connector might not last forever, but they’re not expensive lights. And waterproof isn’t a high priority for them (YMMV).