I am dealing with old fashioned MPPT charge controller which is not smart enough to decide whether to run the Load from PV(Solar Panel) or battery. I need a DPDT relay (12v, 20-30A) that switches the load between MPPT & Battery. But dpdt relay in this rating is not available in local market so I have to use two spdt (JQX-15F(T90)) relays to do the job.
Following is the schematic I have designed to switches automatically between mppt and battery. Will this work or I need to modify it??? Can I use it without diodes D1 & D2 ?
Following is the schematic I have designed to switches automatically between mppt and battery. Will this work or I need to modify it??? Can I use it without diodes D1 & D2 ?