For those using solar power to charge their doors, what is the wattage size of the panels you are using? I'm currently using 1.8W and seeing that I may need to change to a bigger unit to meet the demands.
Look closely at the relay to see what the current draw is or use a multi meter with a current setting to find out the current draw of the system. Then you will know how much watts you need. If the solar cell is not in the optimum position that can cause low power.
JT