Have a two battery system with a perco 1-2-All-off switch. Haven't charged this kind of setup before. What's the best way to do it? I'm using a Guest 3-stage 10 amp portable charger.DO I simply turn battery switch to OFF and then connect the clips to each battery post and charge each battery individually?Or must I disconnect everything from the battery I'm charging?<br />Both batteries are 24 series deep cycle.<br /><br />Now for the really stupid questions...(if you are still reading, I truly appreciate your patience)<br /><br />I have what's probably a typical two battery setup with the perco switch. But here's what I don't understand:<br /><br />Battery #1 has three cables attached to it. (The perco switch cable and the two others I don't know but will assume they are electronics and/or engine and maybe the bilge pump). Battery #2 only has the Perco switch cables attached. <br /><br />How, then, can the electronics, for example, run if they are attached to Batt#1 when I have the switch turned to batt#2?<br /><br />I just don't get this.<br /><br />Thanx