Hi, Wedad A. Alwesabi

It would be great if you elaborate on your question a little bit, for example the chemical composition and type of cathode, anode and electrolyte that is used in your battery. but if got your question right, I can say it depends on the starting point of battery. I mean the voltage difference in metal ion battery depends on the difference of chemical potential of shuttle ion in anode and cathode. if the chemical potential of shuttle ions (in your case Aluminum ion) is higher in cathode compare to the anode, the process will start with first charge, if it is lower compare to the anode, the process will start with a first charge. in other word, if your cathode has Al ion in its structure and cannot host any more Al-ion, your battery will start with the first charge and vice versa.