Listed below are the usual models that charge control a lead acid battery from a nominal 6, 12, or 24 V panel. Models are readily available to charge control different battery chemistries from nominal solar panels or even odd voltage panel. The only limitation is that the open circuit voltage of the panel must be less than the float voltage of the battery.

6 V panel to 12 V battery @ 2 amps
6 V panel to 12 V battery @ 6 amps

12 V panel to 24 V battery @ 2 amps
12 V panel to 24 V battery @ 6 amps

12 V panel to 36 V battery @ 1 amps
12 V panel to 36 V battery @ 4 amps

12 V panel to 42 V battery @ 1 amps
12 V panel to 42 V battery @ 3 amps
24 V panel to 42 V battery @ 2 amps
24 V panel to 42 V battery @ 6 amps

12 V panel to 48 V battery @ 1 amps
12 V panel to 48 V battery @ 3 amps
12 V panel to 48 V battery @ 2 amps
24 V panel to 48 V battery @ 6 amps

24 V panel to 72 V battery @ 3 amps