Maybe it was just tangled filament?🤔

White my test print from afterwards (after unspooling the last two meters from my first self rolled spool 😅), grey a print from a few days ago.

Thank you, I will give that a try.

Thanks, maybe it was just tangled filament 🤔, but I will do a cold pull anyways.

Depends on the PKM tool I would say. I used Joplin with its internal sync with Nextcloud without problems in the past. Then I switched to Logseq which does not have an integrated sync so I had to rely on the respective clients. On Windows and Linux this works fine with Nextcloud, but automatic sync on phones (at least Android) sucks. So I switched to Syncthing for this purpose as the phone sync is more reliable now. I have however a small "server" (RPi or similar is sufficient) running 24/7 to keep the notes in sync even if my devices would not be online in parallel.

As it is in operation for 12 h per day it is obviously doing more than one tour. 😉

In addition to the other answers: You are mistaken regarding stress and losses on battery cell level, at least if you build the same overall batterry capacity at both voltage levels with the same cells.

Starting with the HV variant, the power is P = U * I. If you now build a LV variant, let's say at U/4, with the same capacity, you will have 4 strains in parallel. So on pack level you will need 4 * I to get the same power, but inside the battery this current will split up into the 4 parallel strains. So each cell therefore again only has the current I.

Of course this is an ideal assumption. As you would have higher losses, e.g. in the wiring to the inverter, the overall power you need to draw from the battery increases. But it's not as severe as it might seem based overall current increase on system level.

Edit: The formulas did some unintended formatting. 😅