My Xiaomi Note 10s keep disconnect & reconnect in charging when it reach 84% ... why is like that. This happen after I replace my Ori battery and I try replace new charging port but nothing change. Charge with the phone shut down help but only work 50-50.

Already try different cable and the charger is Xiaomi Ori 33W.

Maybe not because it reached 84%. Probably bad USB connector on the phone already.

Bad USB connector don't explain why the issue only happen when the charge reach 84%.

I was assuming that it just happened at 64% but if it is always happened at that point, then it is something else.

Charging parameter is stored in the chip so does calibration data. Unless this data corrupted, then it maybe a problem. It maybe just phone protection feature. See if this helps

https://technastic.com/fix-samsung-android-...-80-85-percent/

Yeah I had think about that might be the reason when the issue started but the problem is that there are no "On/Off" option for my Battery Protection & Adaptive charging in my Note 10s so I can't turn those features off.

Not sure how old is your phone but perhaps it is battery related. Go check at service center then

Hmm I use Poco F5 (and before that F3) and I have (rarely) seen this happen before

I was using a 3rd party multi port 100W GaN charger (Baseus), so I just assumed it was changing power modes or something due to lower voltage/current draw, 3rd party cable also

And by the time I check, 80 is around the time I usually unplug so I didn't think too much and unplugged it