I have a dc load that I need to power using a switching ac to dc power supply but I also occasionally need to power the load from batteries, I was planning to put the load, power supply and battery clamps in parallel, is that a acceptable solution ? Can I power the load from battery and back feed DC into the supply without damaging it? Would there be a significant drain back into the supply?
If this isn't ok, what's better solution? Diode ? SPDT switch ? The load is 50V 100A so that makes diodes and switches a challenge to find. ..
