Ridiq

Had 3 x 305W's and added 3 x 330W's in January 2019 and decided to only add another 2, ended up with adding 5 x 350W's. 305W's are 4 years old and not 100% efficient anymore, thus I connected the panels in the following way:
3 x 305W's in series
2 x 330W's in series
1 x 330W & 350W in series
2 sets of 2 x 350W's in series and all in parallel.
With 10% loss on 305W's my calculations work out that I only have a 8% loss on complete configuration as result of mixing and matching. 
Increased power from 1.8kW to 3.2kW

Compiled a solar system for my father in law in Schweizer-Reneke. He's running most of the house from this system. Main requirements to have power during the day as result of inconsistent power supply during daytime and the battery power for short intervals at night. 
10 x 350w Canadian Solar panels
1 x 5KW 5KVA RCT Inverter
1 x 2.4KW Pylontech battery
ICC software running on Pi3b