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Alex, a Victron MPPT regulator will do the trick, depending on how much you want to spend and your expansion plans. The regulator I use at our shack is a Victron MPPT 250/100 , not exactly cheap but has bluetooth so you can monitor with a tablet or smartphone. Input can be up to 250V DC and output current up to 100 amps, that translates to around 1200watts at 12V , 2.4kw at 24v and 4.8kw at 48v. At my shack I feed 2 x paralleled strings each of 5 panels for a total of 2Kw. maximum voltage in is around 90 volts, the regulator can automatically select the battery voltage of 12/24/36 or 48 or be manually set. You can set all parameters such as maximum current, float and equalisation voltages from the app. It will also regulate correctly for lithium batteries.
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