Because of some sad reasons I do need a 12V electric circuit at home. I use it mostly for a light. So I have a UPS with battery and 12V DC output. To make things not extremely ugly I got 12V led lamp with E27 base, so overall structure looked rather civil.
But at some moment the lamp started to illuminate too dim. It took a year or something I suppose, so it wasn’t noticeable until some day I thought “Hey, I can’t read anymore under this lamp”.
So I took a multimeter and start investigation (I know nothing about electrics besides those cramps they told me in school 30 years ago). I have DC12V 10W 900 lumen lamp which is supposed to “eat” around 800mA. Measurement showed 90mA. Then I started to experiment and measure UPS, battery, different combinations of different modes…

And yes, the last thing I checked (out of frustration, really) was the resistance of the lampstand. 120 fucking Ohm. Oh…

Just disassemble, clean and assemble it back? Nah, cords were wielded in sockets and half-burned and screws are made of cheese. Completely unrepairable garbage.

And I am poor as fuck. The last problem I needed in my life is a new lampstand.

The dullest adventure ever…