FoxESS Community - Owners & Installers Forum

The batteries are in the garage, lowest recorded temperature by the BMS in the last 2 weeks was 16.6 deg C on one day. Every other day has had a low of 20, or more, maximum high was 29 when charging. I’ll leave it until the end of March now and see what happens Thanks for all you help and advice Dave

Thanks again for the reply Dave. The firmware was updated on the batteries, the master is 1.013 and the slaves are 1.10. Quick question, why does it show 1 master and 3 slaves when there are only 2? Does it matter that the inverter firmware isn’t updated? They are Master 1.54, Slave 1.02 and Manager ...

Just to add to the above, with the SOC set to 20% that gives me usable power of 6912wh, hence me questioning why it would only take on board between 5500 and 5800wh when charging from 20% to 100%. I check the battery reading at 7am each morning so it has just finished the charging schedule. I have a ...

Another update. I’m quite confused now. Got 3x 2.9kwh foxcubes. Voltage suggests all are working properly, currently 180.2v and charging. Actual usable power 8640wh. On Saturday just gone, overnight SOC dropped to 53%. (This is unusual as we normally charge hybrid car overnight which takes it down t ...

Thanks for the positive reply. Hopefully I’m heading in the right direction then The installer said he was going to talk to Foxess to find the latest firmware information and upgrade if required so hopefully that will happen in the near future. I will post later once things settle down and hopefully ...

Latest update Yesterday the installers came and removed the 4100 master and replaced it with a brand new 2900 master. They also added a 2900 slave. So there are now a master and 2 slaves, all 2900w (Funnily enough when I use the old app and click on view on the battery screen it shows the master ...

Got a call from installer yesterday. He had spoken to the top tech guy at their supplier and confirmed what you said Dave, can’t run together. So he is ordering new master unit to replace in the next week or so. Now the problem has been confirmed, can’t fault the after sales service

Installer been a bit of a pain trying to say everything looks ok via the app and another customer with similar system isn’t noticing any issues, but similar is not the same. As I pointed out, hybrid car discharges battery to SOC (set at 12%) overnight, then battery fully charges from grid to 100% ...

Thanks for the quick response. Spoken to installer and he is going to look into it. Only just found out about the Energy Stats app and that pretty much confirms what you say, I never get more than 3.5kw charge on my battery so it clearly isn’t filling the 2.9kwh slave.

Hi all, Just been looking at my system, nearly a year old, and found that what I was advised was an ECM2900 master and ECS2900 slave is in fact an ECM4100 and ECS2900! I assume the system will actually work as a 7kwh system rather than 5.8kwh but can the figures be amended in the app to reflect the ...