The 3 300 watt 24 volt solar panels are connected in parallel to a 100/50 controller. I have triple checked the circuit both for continuity and polarity. The incoming voltage is 37V and the output voltage is 24V. the controller is set for 24 volts 50 amps. The absorption is set to 23.8V and the float to 24.2V. Max voltage is 25 Volts. The battery is a Tesla Model S with 233 AH. In full sun with an 82% charge on battery the system only shows 1 to 4 watts being produced. I don't think its the battery, the MuliPlus charges it to 100%.