

E2 error on G4 (2021)
So yesterday I was riding with 3battery bars left, was on fastest setting(race) and was about to go uphill with full throttle. Suddenly power cut out screen didn't show E2 right away but when I almost stopped its gave E2 error for abt 1-5sec and shut down. Yes I know abt unloading battery and volts and BMS probably did it(ive upgraded the stock bms to a better one) I then got home plugged it in and it turned on like nothing happened and also could use the touchscreen and give it gas in air, did a bit of research and low battery can trigger the "protective" shutdown till it detects a charger. I haven't tried to ride it yet after fully charging it, some shi came up.
(Pics were literally done 5mins before it happened)
Now my question: What do yall think, was it the bms or could be a faulty connector or maybe even something else?
Thank yall in advance for answers and the time!!!