Hi I'm a lower 48 guy living in Puerto Rico and I've been off grid for about fifthteen years. Recently I purchased a new set of batteries but my old batteries still have some storage capacity. I'm wondering if any of you have had the same issue and how you resolved it?
I'm using solar PV panels coupled with two separate 48 VDC battery banks to power a 220VAC inverter which powers my home. I need the ability to switch between the two sets of batteries instantaneously in order to fully charge and discharge the two sets of batteries...this switch requires + cable, - cable and charge controller cable which may be coupled with the + cable on each set of batteries. The reason for this arrangement is one set of batteries is near retirement and the other set is new and they can't be combined without possible damage to the new set of batteries. Thanks!