Used Morningstar ProStar-30M.

This all in one PWM solar charge controller from Morningstar will operate in temperatures from -40 to 85ΒΊ C and features automatic equalization after deep discharges, (optional remote) temperature compensation, battery selector for charge voltage, and low battery load disconnect. Draws only 10 mA.

The “M” series includes a digital display meter that shows charge and load currents as well as battery voltage.