I helped a friend install and setup the growatt 5000 Inverter and 5.5 Hubble battery . We set it up on sbu and OSO  so at night the battery rest so only using solar to charge batterys . But notice after setting up the shine phone app that there's a constant 31w draw over night on the battery and  there's an % drop on the lithium over night . Any one found the same or is this inverter faulty . 

9 minutes ago, GMAC said:

I helped a friend install and setup the growatt 5000 Inverter and 5.5 Hubble battery . We set it up on sbu and OSO  so at night the battery rest so only using solar to charge batterys . But notice after setting up the shine phone app that there's a constant 31w draw over night on the battery and  there's an % drop on the lithium over night . Any one found the same or is this inverter faulty . 

Go to your Growatt manual page 38, No Load Power Consumption. On SBU setting it will also use battery power to power the house during night time.

The Inverter is always powered by the battery. The only time it is not evident is when the battery is charging as it is masked by the charge.
If you wish to have zero battery draw at night then the only way to achieve that is by either switching the inverter off or running your Inverter in USE mode, as that will constantly maintain the float Voltage set, either from Utility or Solar. 
In Li mode the Battery will drain slowly down to the Voltage that is set to start charging again. 
Furthermore, the Growatt algorithm in Li mode or US2 mode will not float the battery voltage, it uses the battery to power the inverter as you see in your graph until it reaches <95% SOC, it then charges the battery again to the set voltage. This is evident even in daytime when solar charge is available.
Example from yesterday

Edited March 12, 20232 yr by zsde

Okay but then is this just an growatt issue or are there othere inverter that suffer from this issue . 

We have 2 different make inverter running on my property in the  2 houses and both different makes  are setup similar to the growatt and at night nether has battery drain through the night indicating they powered  from grid when in utility mode and not constantly from battery  

Your setting is SBU. Is it connected to the grid ?
If it is, then you could choose at which voltage it should start to recharge the batteries with program code 12 and 13.
If you are running Li Protocol it will start a discharge by powering the Inverter from battery once it reaches 100%.
If you wish to maintain the battery level at night then you need to use USE mode and voltage control. Then you can set your codes 12 and 13 to whatever you deem to be appropriate and and it will use the grid to maintain that voltage. 

2 hours ago, zsde said:

Your setting is SBU. Is it connected to the grid ?
If it is, then you could choose at which voltage it should start to recharge the batteries with program code 12 and 13.
If you are running Li Protocol it will start a discharge by powering the Inverter from battery once it reaches 100%.
If you wish to maintain the battery level at night then you need to use USE mode and voltage control. Then you can set your codes 12 and 13 to whatever you deem to be appropriate and and it will use the grid to maintain that voltage. 

Setting is li protocol but inverter won't wait for battery to be 100% before it it start an discharge,  the battery can be 20% and it will  drain the battery  to 10% over night and only start charging wonts the sun is up as setting is  OSO so solar is the only charge source .

So basically what you saying in this case is li protocol is not going to work for us as the battery discharges around 10% through the night and only way around this is to use the use setting manually setting up the inverter with inaccurate lithium soc % 

6 minutes ago, GMAC said:

Setting is li protocol but inverter won't wait for battery to be 100% before it it start an discharge,  the battery can be 20% and it will  drain the battery  to 10% over night and only start charging wonts the sun is up as setting is  OSO so solar is the only charge source .

So basically what you saying in this case is li protocol is not going to work for us as the battery discharges around 10% through the night and only way around this is to use the use setting manually setting up the inverter with inaccurate lithium soc % 

If you want to charge the battery with grid you need to change setting 14 to SNU. 

The thing is we don't want to charge the battery from the grid as it cost more in units to keep the battery toped up . The 6 550w solar panel are there for that purpose . 

Now what we have observed today .

The the battery were toped up from solar today from last night load shedding but ran on grid power the day . When pv droped to 0 Wats the the drain on the battery was 0 Wats but after 2 hours load shedding the inverter now continues draining from the battery of about 31wats . So before it was running from grid but after load shedding it runs from battery now constantly draining on the battery and can calculate it will drain at least 10% of the battery tonight with 20% cut of this  leaving really only 70% battery for  load shedding . 

It looks more like to me if it's been running on grid the day charging battery from solar in the evening the inverter will continue being powered from the grid but ones it switched to battery mode in the evening for load shedding after load shedding the inverter will continue to be powered from the battery draining the battery over night 

Hi battery power the inverter.. what I found out is that you should allow charge battery from ulity and setup charging current to 1 Amp. It xan get you 0 power bat consultion and with 2 you get slow charging of battery. Setup 11 a 14. This can help you with this issue