Do you want to know how much charge you got from solar by the day? I have solution for you! It called watt-meter and in this video i install it in my van conversion solar system. Link to the product – http://ali.pub/sqxoi (10$)
Please be sure that 150A and 60V is suits your solar build.
150A will bee enough if you have 12V system with 1500W
60V is ok if you have no more than 4x12V or 2x24V panels in series