I had already switched two of my UPS units to LiFePO4 cells, and decided that my soul needed a holiday, but my hands itched, so I decided to switch this third UPS to lithium. Initially, I did not plan to write an article about this experience, but I took so many photos in the process that I decided to share it with you anyway. 8 years ago, after the article " Comparing 4 2 KVA UPS ", I still had an Inelt UPS Monolith III 2000 RT, which I used to power a 230W home server. I'm ...