Good day... I currently have 1 x sunsynk 5kw ( SUNSYNK-5K-SGO1LP1 inverter ), two Sunsynk Sun-Batt-5.32 and 12 x 450w panels. I am wanting to upgrade the system, so either buy another 5kw inverter or sell the 5kw and buy a 8kw or 10 kw inverter (Sunsynk). I did purchase the original Sunsynk 5kw inverter from the Powerstore sometime ago ( + - 5 years ago) and am worried that the current Sunsynk 5kw inverters are not compatible with the old ones when setup in parallel format. Anybody have some advice going forward?