yeah i tried this battery on another working machine and charges ok (charged from 0 to 100% just to be sure thats ok), also tested another OEM battery with 200 cycles and does the same.
thanks im cheking that thread right now....

omg yes it was replaced with an original one, im frying my head with this haha. but i tried with the lcd disconnected and same issue. just does not make sense. heres a video for reference, when boot charge foro 1 or 2 min then stays with the bat not charging just the plugged in logo. mon2...

resistance in c5260 is 2 ohms...

No liquid damage, but kinda dirty overall. came in with a faulty psu, changed that and worked ok for a day and came back with no charging battery, but detected. can see the battery and precentage, works with a charged battery

strange issue, everything works but the battery starts chargin at first (like a minute when fully booted) and then nothing, just the connected logo. i have another same model working to make somes tests and comparission measurments. tried dfu restore just in case but same problem.

Will check that first on monday when open the shop.

im having a similar problem, did you solve it??