so today after i fully charged my battery with external battery, i plug my pair of mxjo to my rx 2/3 mod. i use 2 battery because its so simple. when it turned on, its says "check battery". so i swap the battery and doesnt work. i check the battery status by long pressing all of theree button and the mod detect 3 battery "4.19" "0" "4.18". so i tried to use 3 battery and the value is "4.19" "0" "8.18". wtf happen with my mod. any help please