Got one more. This one is a life saver.
It is actually a lot more ghetto than it looks, cause it was hastily made out of mostly garbage laying in my workshop.
* the LED panel was salvaged from a broken solar streetlight (or more accurately - intentionally designed to break).
* battery was a spare I bought a few years back for my neighbor, which both of us totally forgot about. Had to cut a ribbon cable off it, but I left a BMS in order to keep discharge/overcharge/short protection
* mini-USB charging module was made out of 2 broken ones, cause I did not want to wait a few days for a new one
* LED driver was gifted by a friend who said "it's shit and overheats". Turns out those pesky Chinese messed up and used a 0 Ohm resistor on the feedback line instead of a proper one (I think it was 22Ohm according to datasheet). So, I didn't have one either... Soldered a 50 Ohm trim pot which also gave me the ability to adjust brightness.
Made 2 more of these for my apartment. Keeps the lights on up to 5 hours on a full charge, and recharges in ~3h.
I'm also waiting on some new 5V 2A charging modules, which will make my life even easier. I can throw in 5000mAh batteries on each one of those and recharge once a day, while having almost 6 hours worth of light. Beefier drivers would be even better. Tested it at 1.5A output without a driver, and that thing gets super-bright while remaining relatively cool.
View attachment 271340
View attachment 271341