hello Vlado I was have that like error,it means that battery have bed capacity and when you charge the battery do not have power to work for 3-4hours and if you force it with forward-backward and hydraulic in some time, time is much shorter and cables heat to much.Please if you can try with good battery and you will see difference.It is incredibly how many errors start from bed power.Please try and tell me what do you do.Good luck