On further review . . .
In this application, I'm not sure why your charge controller needs to feed the gate opener?
Why not just connect the gate controller directly to the battery (with appropriate fuse, yada, yada). When the opener runs, the charger will see a slight depression of the battery voltage, and try to charge it, but current through the charger is limited by PV output. Direct connect to battery should suppress any spikes that apollo forgot to deal with in the opener (found your other post).
Also, motor starting current (transient) can be as much as 10x what you see on an ammeter. Maybe your controller has a fuse on the load output?
Pat
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