we recommend to choose solar panel that meets below:
1) open circuit voltage between 16-68v(OCV,open circuit voltage), Max.500W, Max.10A
2) MC4 Connector (if your solar panel has an anderson connector, you need to buy a anderson to MC4 charging cable)
Note:total OCV below 16V or above 68V will trigger low-voltage/over-voltage protection. We suggest to choose the working voltage of the solar panel above 18v for better performance. EB150 only receive 500W/10A(Max.) if total input power /current exceed 500W/10A.
The recharge time various from different factors such as weather condition, the actual input solar power, temperature, angle, etc.