If a first fix doesn't succeed, fix it and fix it and fix it and fix it.... You get the idea.

My small 4in fan I take hammocking with me had the charging port break on me and while I have the soldering station to fix it, I hate soldering tiny pcbs and have just been removing the lipo cell and charging it with my 18650 charger I had made an adapter for awhile back. I basically just stick two ribbon cable pins into the adapter and the other ends go to the appropriate +/- wires on the jst connector to the lipo. Takes about 4x longer than my largest capacity 18650 but it saves me a little annoying soldering.

Also I lost the on button when I was disassembling it so now I just shove my longest nail down into the housing. I COULD print a new one but I'd have to set my printer back up and tune it just for one small piece... I have a piece of paper taped to my printer that I keep writing the things I wasn't to print and once it gets long enough I'll set it up, it's just a lot of work and I don't have much space.