I have a 2013 Commander E LSV and need to change all 8 batteries. I read somewhere that you do not want to run the batteries dead since the computer (commander onboard computer or onboard battery charger??) will loose settings and you have to take the vehicle into dealer to reset the computer. True? If so, how do I prevent this when I remove all 8 batteries? I will not have the new ones there immediately since I need to take in the old ones in for the core charge when I buy the new ones. Thanks.