Fred79

Interesting trend, I am also looking at adding additional PV to one of my Sunsynk 8kw MPPT's. Any advice would be much appreciated, and if safe to do so. Current setup of 11x 330W canadian (CS6U-330P) (1x 330W disconnected due to VDC limits) on one MPPT(1), and 9x 405 Canadian (CS3W-405P) on the other MPPT(2), all panels are connected in series. I got 6x more 330W panels and would like to add them to the current 330W string. My plan would be as follow. Create two strings of 9x 330W on one MPPT(1) the other MPPT(2) will remain with the current 9x 405W (for now, do have one more 405W to add eventually 🙂 ). Looking at the info on the 330W panels I should be below the MPPT rating for the Sunsynk, my concerns are more Watts and amps. Would unbalanced MPPT be ok, can the one MPPT(1) be at 5940W and the other at MPPT(2) 3645W. 2 strings of 9x 330W (voc 410,4)(isc 18,9) watt 5940 On the side sticker of the Sunsynk (SUNSYNK-8K-SG01LP1) its shows PV Input Current 18Ad.c+18Ad.c but believe that this is now 22Ad.c per MPPT. From my understanding this was changed in some firmware version not sure if this is the case. current code (COMM:E426 - MCU:6022-0717) I need to be very careful with this investment. 🙂

@GreenFields This is what I can see on the side of the inverter.

Not to hijack the trend but also looking for some advice. I have a Sunsynk 8kw and would like to hook up 18x CS6U-330P Canadian panels (2 strings of 9x serial connected) on one MPPT. The other MPPT all ready have 9x 405W Canadian panels connected. CS6U-330P Nominal Max Power 330 Optimum Operating Voltage Opt (Vmp) 37,2 9x 334,8 Optimum Operating Current Otp (Imp) 8,88 2 17,8 Open Circuit Voltage open (Voc) 45,6 9x 410,4 Short Circuit Current Short (Isc) 9,5 2 18,9 Max Series Fuse Rating Could this work safely?

@Planck Apologies, seems my usage of words let me down. I can confirm while the upgrade is running, all power was cut. Regarding the off-grid: I am not willing to pay an Eskom connection fee of 100k hence the total off-grid. I am using a Bundu Power Diesel Gen-set on cloudy days to charge and supply the house with power. Not ideal but have been working well thus far.

Scheduled an update on firmware this morning at around (1Feb)10:00am SAST for my SunSynk 8kw. Code was applied on the inverter at around (1Feb)13:15pm SAST. from: COMM:e41c - MCU:6006 to COMM:E426 - MCU:6022-0717 Some new menus, display. No issues to report yet all seems to work as normal. (total off-grid). There are no AC out while the code applies to the Inverter ROM, you can actually see the progress of the code applying on the main screen. (round green circle).

First time forum "poster" here 🙂 Not sure if this question have been asked in the forum before, I currently have 6x 3000 and 2x 2000Plus Pylontec batteries (total 😎 hooked up to a Sunsynk 8kw inverter. I do believe this is the max total for a single battery bank configuration. I would like to expand the battery bank with either one or two additional 3000C Pylontec batteries. Would I require Pylontec HUB to achieve this or would it be the acceptable to add the one\two additional 3000C to the battery bank, seeing that the 3000C batteries can be configure with max bank size of 16 batteries? Obviously a 3000C to be master battery. Any advice or guidance will be much appreciated.