An insider!
Currently she has a 3xAAA which I put a 18650 in.
The light is starting to give issues.
She doesn’t replace any battery, regardless of the type.
The tailcap takes way to much force to unscrew.
The reason one of the demands is long runtime is exactly for that reason.
It has to last until my next visit. The light is on for a few minutes a time.
The type of battery is not a big issue because whatever it may be, I’ll make sure she won’t run out.
She has plenty of visitors who are able to swap batteries if needed.
You could be right about the 100-180 lumen vs 350 lumen.
http://www.lumintop.com/toolaa.html
I have that one and use Ni-MH and it’s 140 lumen isn’t bad at all for indoor use.
Runtime may be a little on the low side. The main reason I’m not considering that light is because it use half-press to cycle trough mode. And a quick twist mode change. That may prove a challange due to her artroses.