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Givenergy protocols

This may give a clue


What do you want to achieve.
 
I would like to use a givenergy ac coupled inverter with a third party battery which uses a JK BMS.

I need to know what protocol it uses to make sure the battery and inverter communicate, has anyone else done this?
 
Thanks for that, Yes I had come to the same conclusion, it just seems very short sighted of the company, but hey its their choice.

Is there any AC coupled inverters you would recommend?
 
Not used one but Deye seems well liked, has UK G98/G99 cert and Deye canbus is on the JK PB BMS list of canbus protocols.

I use old SMA Sunny Islands and JK PB BMS and that is working well, the SMA has worked with the Deye canbus protocol as its based on Pylontech which is the most common protocol and was copied itself from SMA canbus which was the first Canbus.

Be aware the JK PB BMS documentation is woeful, its littered with errors one of which can be fatal to the BMS such as 2 Cell 8 pins on the board. You can use either of them and it works, use one for cell 8 and one for cell 9 and your BMS will blow a resistor and not work. It is fixable but you better be good with a soldering iron.


Canbus pinout is wrong too.
 

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Is there any AC coupled inverters you would recommend?
There are quite a few users on here from UK who have been using the Solis RAI range of AC coupled energy storage inverters. I don't have one, so no direct experience, but they look almost identical to the Solis RHI/ EH1P hybrid inverters that I have, albeit without any PV input.

The only issue is they only provide up to 3kW.
 
thanks guys, very useful info...

My BMS is JK-PB2A16S-15P, hopefully it doesnt have these issues.

I have looked at the goodwe ac coupled retrofit 1 phase 2 mppt wifi gw5000s-bp, any experience?
 
I have looked at the goodwe ac coupled retrofit 1 phase 2 mppt wifi gw5000s-bp, any experience?
I don't know that inverter. Can you elaborate on what you are attempting to achieve? Bit confused as you refer to AC coupled and also MPPT; one implying energy storage only, the other with PV input.
 
GW5000s-bp is a retro fit where you already have panels and a grid tied inverter and want to add a battery on the DC side, pointless to consider it if you currently have nothing as a hybrid will do it all in one box at the same price saving you from having to buy a grid tied inverter.

So as SG says, what are you trying to do ?
 
A retro fit is DC coupled, it is done that way so your DNO agreement does not need to be changed as they are only interested in what's on the AC side not the DC side. So the Growatt you selected fits between your Givenergy and the panels on the DC side and diverts DC from the panels to store in the battery and then when needed takes the battery DC and presents it to the Givenergy as DC emulating the panels. Hence you get panel DC at midnight if needed.

Givenergy is a closed product, DC coupled retrofit are a niche product so IMHO you are compounding your issues. That's what happens when you buy closed products, you end up down cul de sacs.
 
So the Growatt you selected
Hmm... Growatt or Goodwe? :unsure:

Anyway, re:-
I have looked at the goodwe ac coupled retrofit 1 phase 2 mppt wifi gw5000s-bp, any experience?
I was going to try and help by checking out the datasheet for the gw5000s-bp, but sorry, that image on the first page has put me right off.

My advice is avoid any manufacture that uses such overt objectification in their marketing material. The image is not relevant to the product they are promoting by any stretch of the imagination :mad:


Sorry, "I'm out".

</end-of-rant>
 
I should probably start a new thread.... but, and I know this sounds strange.. can you use a Hybrid inverter as an ac coupled inverter?

So basically connect it up to the battery etc, but do not connect any panels to it?

I know you will say why would you do this.... Its just I have noticed you can get various on/off grid hybrid inverters a reasonable price..


Any how , just a thought, you views would be welcomed
 
I know this sounds strange.. can you use a Hybrid inverter as an ac coupled inverter?
Yep.... certainly my Solis will charge from power that would have otherwise been exported.
 
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