Charge controller manual?

I recently got a cheap PWM charge controller to be able to charge my batteries individually to do some tests and charge my car battery if i need to. The controller says Max PV voltage 50v and Max PV power 390W. In the manual it has a note "12v battery with 18v solar panel. 24v battery with 36v

Get you started how to operate Pwm solar charge controller

Solar controller for your RV or Motorhome. Complete your system with a MC Series- 50 Amp Controller that provides top protection for lithium

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The Solisto SOL-40-NC and SOl-30-NC charge controllers will work with either a 24V or 12V battery bank, and feature 4 programs for changing Flooded,

Solisto Charge Controller

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