boatmaker

I tried an old LAN cable, just cutting Pin 8 out. Leaving the rest. RS485A on master to RS485 on inverter. RS485B on Master connected to RS485A on slave Battery 1 dip switch 1 on, all others off Battery 2 dip swtich 2 on, all others off Left all settings on Inverter, except obviously changed to Lithium, Bms error off, Protocol 1. Turning on the master battery, gave an alarm on the battery. Then the inverter tripped, after a few seconds reset and coming on gave a F58 BMS comms fault, tripped again, then came back on after a few seconds, no alarms on inverter or battery - so everything seemed normal, except there was no info on the BMS screen. So that didn't work. The inverter tripping makes me nervous - should it do that? I can try and cut all the wires on the LAN cable, leaving only wires/pins 1 &2 connected; but i'm not sure of the dip switches on the battery, the manual doesn't give any advice, and I've also seen that the "Protocol" setting on the inverter can play a role, so not sure what that should be set to?!

HI I'm trying to figure out if the Shoto 4.8kWh batteries BMS are compatible with the Sunsynk inverter. Seems most don't have any luck and are using AGM settings on the inverter. Normal comms cables won't work as it seems the pinouts are quite different. If I had a cable made up, connected to the RS 485 ports do you think the BMS will then work? Any idea how I would connect the pins since the inverter has 2 RS 485 A/B pins and 2 GND pins? The battery RS485 pinout is as follows: Pin 1 RS485 B Pin 2 RS485A Pin 3-7 NC Pin 8 GND Inverter RS485 port: Pin 1 & 8 RS485B Pin 2 & 7 RS 485A Pin 3 & 6 GND Pin 4 & 5 NC

Greetings I have an existing 8kw Sunsynk inverter with 1 x Shoto 4.8 kwh (SDA10-48100L5) battery. If i want to add another battery, does it have to be the exact same brand and capacity - or can i for example add the newer 5.1kw Shoto battery in parallel to the old one? Finding stock of my older version battery is an issue. Or do i buy 2 new batteries and try to sell the old one? I will get a professional to do this for me, just wanting to know what i should be shopping for. Thanks

Interesting idea! Where do you sell 2nd hand Inverters? What you recon i can get for a 3 year old 8kva Sunsynk?

Thanks for all the advice. To answer some the questions 1. 10kW of panels are producing excess than what i can use in summer - but that is going to the grid. Also, since the Inverter is limited to 8kW, i'm getting clipped to the tune of 2kW during summer - so i was looking at some way to add an inverter, shift some of panels to another inverter and maximize my export to the grid. This will help bring down my electricity bill to almost zero. 2. Looks like i'll go the simple route and just add the flat to the existing installation and add a battery. See how i go. 3. Question for @GreenFields how do i add a smaller inverter to the system that can also export? Where in the system does it go? Currently the Sunsynk inverter controls the export with thanks to the CT coil. 4. @Sc00bsWhat is a smartglobe?

There is a youtube video by sunsynk that says that the Solar Power shouldn't be set above 4000W - and that this value is basically the amount of power that the Aux port will be supplied with by the Inverter, ie out of your 8.8kW, only 4kW can go to the Aux port...If you set it to zero, according to them, you will not get any power feed to the Aux port. I'm more confused now than before. Seems in reality different things happening...

I have a similar situation - and yes, if you connected the granny flat essential load to the Aux port - i believe that should work. I'm pondering doing the same. If the granny flat is connected to the main house DB on the non-essential side, then by default it will be powered by the solar 1st then grid 2nd; becuase that is how you will setup your main DB for the house.

Greetings all I have an existing Solar PV system, 10Kw of panels, 8kw Hybrid inverter and 5Kw battery. The Main house DB is split for essential and non-essential loads. All running like a dream and i'm very happy. My in laws - in my granny flat are not so happy, as when the blackouts hit, they in the dark, and i'm in the light! The granny flat has its own Sub DB run from the main house DB on the non-essential load side. I'm looking at ways to get the granny flat onto battery backup, but at the same time, I want to expand my PV array by about 3kw. Thought about 2 options: 1. Run the granny flat essentials off a new breaker on the essential DB fed from the main house. Probably add a battery to cope with the extra load. The load on the inverter should be fine. If i want to expand the PV array with this option, it forces me to get another 8kw inverter to expand the system - which is quite expensive and overkill. At least this is what i understand, you can't mix and match inverter sizes when expanding in parallel? 2. Get a complete standalone system (3kw PV+Inverter+battery - flat is tiny and has minimal power draw) for the granny flat. Question is here, can excess power produced by this system feed back into the grid alongside the main house system? How would that be wired? Appreciate any thoughts on the matter. Thanks