Why my battery power dropped from 63% to 19% with in 40 minutes ish… is it do with the cold weather?
1 Like
What happens afterwards?
Please post a screenshot of your power graph from the web portal.
Thanks
Rob
2 Likes
What model and size of battery do you have?
Same for inverter.
There used to be problems with some batteries where the SOC dropped but this was instant. Yours looks like it is over time (40 minutes).
On the portal, go to the Inverter/battery data.
You can then review SOC and battery voltage throughout the day.
On your chart, what is the green line showing?
Below zero reflects the battery charging. Above, the battery discharging.
Can you post a screenshot of your portal power chart. This is mine:
The line is battery SOC.
Rob
1 Like
The big drop you highlight looks to be at about 9am, and there’s nothing much happening, some house load (red line below the central line) and some battery discharging to meet it (green above the line), but the battery percent drops dramatically as you said.
This is likely to be a SoC correction whereby the battery realises it doesn’t have as much charge as it thought it had and corrects the figures it presents. Basically the previous SoC it was reporting was erroneous and now its giving more accurate data (its a complex subject but measuring battery % full is not easy, its all done on voltages and they actually move over a very short range).
The best thing you can do to avoid this is to try to use your battery fully on a regular basis - i.e. fully charge the battery to 100% and let it drain to empty 4%, say once a week. This helps the battery to calibrate its % full more accurately.
Also worth checking you are on the latest battery firmware as this is an area Givenergy have been working to improve
1 Like
Hi Geoff,
Thank you for clafield . I haven’t got a clue how those graph worked!
Thanks.
Michael
1 Like
Something very strange happened around 12:00. You have a load of about 10kW (in green) being supplied by the grid.
If you look at my power graph, I don’t have anything near to this power draw.
Were you using something around 12:00 for 30-45 minutes that might have caused this power draw.
If you look at the other colours, the battery (blue) and PV (yellow) are hardly showing up at all in comparison.
How long have you had the system?
And what model inverter do you have? You can get this from Inverter/General on the portal.
See if anything settles down over the next day and them upload another power graph so that we can see if things have settled down.
Rob
