eLite Electric Motor Solar Charger from ePropulsion. 
 
The easy to use solar charger comes with universal MPT connectors an will connect to most solar panels without any modifications - best used with at least a 100 watt maximum solar panel.  The charger also includes an adapter to plug into a 12v outlet for a few options to keep your battery charged and ready to go!
 
Input 10-23 Volts up to 10 Amps Max
Output - 4 Amps Max