I find fluorescent lighting utterly depressing; so, when I’m at work alone, in the evenings, I ceiling bounce maybe a dozen lights to thoroughly light up my work area.
Whenever I come home from work, all the batteries I used, get charged, so they’re good to go, the next morning - without fail. I’m a stickler for leaving the house with lights that have fully charged batteries, and having plenty of alternate lights, to light whatever may come my way. I carry a dozen or so lights in a bag, with my multi-tools, and other stuff.
I like to use a Pelican 1010 case to EDC backup batteries, in that pack.
At home, I do the same, so I can have the kind of light (tint) I want, and I prefer ceiling bounced light, over direct lighting any day of the year. I’ll place a light on either side of my computer monitor, to reduce eye fatigue for late night computer use.
I’ll place another pair on top of either stereo speaker, kind of behind me, and off to my right; and if I want more light, I can place a pair, one on either of two sets of DVD towers, on the wall across from the speakers.
Sometimes, I’ll even mix and match two different tints in each area, for just the right color.
I know - I’m fanatical about having nice tints, to light up an area; and quite a few of my more recent purchases have been lights with neutral and warmer tints, so there’s no shortage of choices.
About once a month, I top off all of my 18650 batteries, whether they’re installed in lights, or not, pretty much religiously - and I usually do this at higher charge rates. I don’t care if I lose few cycles, down the road. It’s still a lot more economical than constantly changing out primary batteries, I never suffer from “guilty lumens” lol, and my lights are always prepared for any eventuality, on a moment’s notice.
Having multiple chargers makes it easy to quickly charge a large number of batteries, so I don’t have to take all day completing the process (I have 57 18650 lights, running on 69 batteries, so the more chargers the merrier!
A good portion of my AA lights also use multiple batteries, so I can charge a slew of different battery types, simultaneously, whenever I feel like it.
Some of my lights use two to four batteries, so the quantity of batteries used adds up, pretty quickly.
When there’s a power outage, I pretty much supply the house with lights. I could probably light up the entire house for at least a week, very nicely. Unfortunately, we rarely see power outages, and they usually only last a few minutes or so. A couple of days ago, we had a planned power outage that lasted almost twelve hours, but most of those hours were during the day, so that sucked.
When I do any kind of job that needs lighting, I have plenty of lights to choose from, and I have no qualms about using multiple lights, simultaneously (often, ceiling bounced).
Whenever I do indoor EDC (or other) still photography, I use a combination of lights and placements, to give me what I want, since I can’t really afford a bunch of fancy photo lighting equipment, and since I already have plenty of lights with neutral and warmer tints, to do the job. It gives me a lot of control over the overall quality of light for the picture.
A use can always be found for a good light - or bunch of lights 
Not that I’ve utterly derailed the thread - is this charger fan (actively) cooled, or heat sink (passively) cooled? It’s very important to me.
