DeeDee

Fivestar 48170 uses Pace P16S120A-31057-1.00 BMS 
Can be accessed with Pbmstools software Password 123456
https://powerforum.co.za/files/file/160-pbmstools-v25/
Cable needed are a USB to rs232 and a RS232/sub DB9 to rj11 
 Link to the bigger BMS.
Cable pinout schematic at the bottom of page.
 
DB9 to RJ11.pdf

(Updated info further down in the post)
I create a very simple Python script to interrogate the Pace BMS as used in some popular lithium battery brands. I've also packed this as a Home Assistant add-on, but can just as well be used as either a standalone script / within a docker container.
It reports the voltage of cells, temperatures, the pack's current, voltage, SOC, SOH, and a few other metrics.
Use at own risk. 
Either a serial link to the RS232 port or via IP (using some port server over TCP) will work.
Repository: https://github.com/Tertiush/bmspace
The script serves by needs atm, so any further developments can be done by the community.

UPDATE:
I've rewritten most of this script using the official PACE RS232 Protocol definition. The script now supports multiple packs!
I've only implemented informational messages / retrieving data, no commands.
Use at own risk!
Many new fields are now retrieved such as warnings, balancing data, status indications, etc.

Halo's coming in full force as soon as they open in a few days. They have reserved units for us and we going to start the new year with a big promo for them. I'm very excited about it. @Powerforum Store . Will bulk mail it out for you guys. I also need a few for our WIFI sites. Very excited. Soon Soon. I hope this is helpful.
Sincerely
Jason
 
 

Also heard about them via the owner ( bought some other batteries and transformers from them, great people ), Known them for years..

Keen to get my hands on and poke around inside.
Will post some pictures when I do

Also heard about them via the owner ( bought some other batteries and transformers from them, great people ), Known them for years..

Keen to get my hands on and poke around inside.
Will post some pictures when I do

Hi all. Met the owner. Awesome awesome honest guy. We Listing his stock early next week. Hope this helps.
Sincerely
Jason

@charlez - I don't think the suppliers are even aware of this issue with the inverter!
Here is the circuit

The heart of the isolater, is the LD03-16B12 (AC/DC Converter Vin = 90-528VAC (100-745VDC) Vout = 12V 250MA).  Since I have 2 banks of panels consisting of 400W panels capable of delivering more than 20A in total, I had to use a 30A relay.  If you have smaller panels, you can use a smaller relay.  Just make sure that the coil resistance of the relay is more than 70 Ohms to limit the current draw from the AC/DC converter.
Of course you can also use any other type of DC/DC (or AC/DC) converter.  As long as it can handle a relatively high input voltage with an output current of around 250mA at 12V (Or whatever voltage you desire to trigger the relay)
I hope this is useful for everybody who experiences Error 08 while the PV panels are very wet and the inverter is in bypass mode...

I've used Opensprinkler in the past with HA,
the local supplier seems to have stopped bringing them in, and we moved house, so I need a new one/ few more, so I made a few more using ESP32, need to finish enclosures and they should be ready, but code has been ported and they are running on my desk

Congratulations again!

Yes, the password is growatt + the current date i.e. growatt20200902 - got that info off here: https://gathering.tweakers.net/forum/list_messages/1984968
 

I think some of it has to do with the canbus communications with the battery. In later discussions, it seems these Growatt inverters work fine with the same  battery, as long as you set the settings in some way, or if there is no comms.
Now this is a field I know a little something about. Some of these managed batteries do current control. They instruct the inverter to charge or disharge by a certain amount. Quite often these batteries will send a zero when they want the inverter to stop completely (eg when the battery is completely full or completely empty), in Victron speak we call that the DCL (discharge current limit) and the CCL (charge current limit).
The DCL=0 case is mostly uncontroversial. Pylontech batteries, for example, send this before the battery is completely empty, and that way it protects itself from very deep discharges and so prolongs the life of the battery.
The more problematic case is when the battery sends CCL=0. Then the kind of toplogy of your inverter, and how your PV is coupled, comes into play.
As one example, imagine an SMA system. All your PV is tied on the AC side, using SunnyBoy grid-tie inverters. Then you have a SunnyIsland inverter connected to the battery. This inverter charges the battery and listens to the CAN-bus BMS on the battery. If the battery says CCL=0, the inverter can do that. It does not affect the delivery of PV at all. That's tied on the other side, flows normally to the loads, and out onto the grid if not limited.
Or consider a Goodwe. The PV connects directly to the high voltage DC bus, in other words even though it is a hybrid, the PV ties onto the grid in a very similar manner to the SMA example above, on the high voltage side. It can take the battery current right down to zero and just leave it there, without affecting PV delivery at all.
But now consider the cases where the PV is DC-tied, which is the case with this Growatt and also with many Victron systems. This is what you could call a "push pull" system. The DC chargers push current into the DC bus (and the batteries), and the inverter takes current from the same. If the load and the PV does not quite match, the remainder naturally comes from the battery.
Now imagine trying to do current control in a setup like this. With a hybrid inverter, some of that is possible. You can mix in some grid power in order to comply with a lower DCL, and you can limit solar chargers to comply with a lower CCL, but the basic problem remains: That in a DC-coupled setup, the battery is an integral part of the power delivery mechanism, and a complete zero situation is never going to happen.
Now I get to my point: I think these troubles start when batteries designed for one kind of ecosystem (the current-control world) is used in the other ecosystem. The battery says CCL=0, and so the inverter stops all charging (throttles the MPPTs to zero), and then the inverter has no choice but to discharge the battery rather than use the PV. After a while, the battery raises the CCL again (since it is now down to 95%) and suddenly the world returns to normal, for a while.
This gives you that little bit of micro-cycling at the top. And of course you don't want that.
The solution is to not do current control, but to adjust the charge voltage of the battery. If you don't want the battery to charge, lowering the charge voltage will stop that. It's as sure as the fact that water cannot run uphill. But that would be the "other" kind of ecosystem I referred to.
Now some inverter makers have workarounds implemented to bridge these little issues. And I assume, Growatt hasn't got there yet.