Hi, I am a sailor in Mexico. My boat has a 48 volt motor in lieu of a diesel motor. I have six 90 amp glass matt batteries in two banks - two in a 12 volt "house" bank and four in a 48 volt bank to power the motor. I want to recharge all the batteries with a 24 volt 50watt solar panel. (I know it sounds small but it is sufficient for my needs because I use very little juice for the boat and the motor is only used for maneuvering into and out of an anchorage or marina). How do I configure this system - in terms of controllers etc.