Any solar panel that is rated 12 watts or higher requires the use of a solar charge controller to regulate the current and voltage going to the battery. This 11 Amp Charge controller can handle up to 165 Watts of Solar array

Protects battery from overcharging and high voltage surges
Protects the battery from discharging with built-in blocking diode
Use with any 12 Volt Solar Panel system
Equipped with easy to install plug and play connectors
Automatic cut-in and cut-out maintenance-free operation
Easy to read LED light indicators show battery charged or battery charging Maximum Power Input: up to 165 Watts
Maximum Current Input: 11 Amps
Cut-Out Voltage: 14.2V
Cut-in Voltage: 13V