I am designing a boat that is operated by two solar cell banks which in turn charge two separate batteries. I would like to run the boat with one bank while the other is charging, and once the one running is below a certain voltage, the other bank comes on and the cycle is repeated. I have tested my set up and each bank provides enough power separately to propel the boat at a slow speed(1-1.5 m/hr).
Any ideas about the hardware set-up particularly switching from one battery to the other.
Thanks in advance for all the help.