No.
But if you are looking to leave something hooked to it perpetually to maintain a car battery, that $20 charger is a DEAL! :)
Yes, thanks, but are you saying that even the 10 Watt 12 Volt Solar Trickle charger should have a controller?
So sorry I misunderstood. No, when you get a complete charger like that it will have the controller built in with it.
It will control the voltage and go on float (idle) when the battery is topped off. When the battery drops to a certain voltage it will kick back into charge mode again.
It will repeat to maintain it.