I can confirm I was able to charge last night with the settings I have. Charge was capped at 1.06 kW.
I have contacted octopus to let them know about this so maybe they can give Fox a prod.
They also said that they think my 60A fuse is a factor, but I’m not sure how that works. My Ohme EV charger works at 6kW just fine.
Yeay!JamesBranson wrote: ↑Wed Mar 25, 2026 10:15 pm I can confirm I was able to charge last night with the settings I have. Charge was capped at 1.06 kW.
Hopefully Fox will recognise the symptoms and push out 0.23 or whatever the latest version is.JamesBranson wrote: ↑Wed Mar 25, 2026 10:15 pm I have contacted octopus to let them know about this so maybe they can give Fox a prod.
Depending which order your battery and Ohme are connected and where the Fox current tap is it might see the charger load. 6kW at 240V is 25A so if both were charging that could be 50A plus the house load, but I'm not aware the Fox monitors the total load. Quick Settings says mine is set at 15000W for Import and Export Limits which would be 62.5A but the unit isn't capable of that level anyway!JamesBranson wrote: ↑Wed Mar 25, 2026 10:15 pm They also said that they think my 60A fuse is a factor, but I’m not sure how that works. My Ohme EV charger works at 6kW just fine.
Fox have pushed my firmware to 0.40 and has solved my issues.
I emailed them last night and they pushed it this morning.
I emailed them last night and they pushed it this morning.
Yeay, glad it's working! 0.40 - wonder what the changes are... The app is still offering me 1.09 as an upgrade. Guess Fox are still working through issues...
It seems a good sign that Fox are pushing out regular (although beta) updates that fix issues. They seem to be ‘on it’ which seems good.
Thanks for the advice on my set up. I know that the Evo 10 definitely cannot see the Ohme, as I have checked the house load when the car has started charging and it does not change on the inverter panel or the app. I am quite happy with this, as I was worried that my Ohme would drain the battery to charge the car.
I think the Ohme does load balancing, so if it detects large loads it can adjust, but then again I am not sure if it can see what the battery is pulling when charging either!
Maybe I do need a bigger fuse at some point!
Thanks for the advice on my set up. I know that the Evo 10 definitely cannot see the Ohme, as I have checked the house load when the car has started charging and it does not change on the inverter panel or the app. I am quite happy with this, as I was worried that my Ohme would drain the battery to charge the car.
I think the Ohme does load balancing, so if it detects large loads it can adjust, but then again I am not sure if it can see what the battery is pulling when charging either!
Maybe I do need a bigger fuse at some point!
Aye, I had the Ohme installed just before the Fox. I asked the Ohme installer to leave room in the meter cupboard so the Ohme could be first after the meter and then the Fox, so the battery didn't try to charge the car. He didn't leave enough room so the Fox installer spent an hour rewiring the meter box! 
My Ohme is definitely aware of the incoming load - in My Charger, Advanced Settings it shows "CT Clamp Reading" which sees the charger/house/battery load and "Load Limit", which the installer set to 90A as I've got a 100A fuse.
My Ohme is definitely aware of the incoming load - in My Charger, Advanced Settings it shows "CT Clamp Reading" which sees the charger/house/battery load and "Load Limit", which the installer set to 90A as I've got a 100A fuse.
What WiFi adapter are you using?
I’m keen to get home assistant set up as well!
Have you tried using the v1 app? Before I got the firmware update to 0.40, I had to do this:JamesBranson wrote: ↑Wed Mar 25, 2026 10:15 pm I can confirm I was able to charge last night with the settings I have. Charge was capped at 1.06 kW.
- set work mode to self use in v2 app
- set these battery settings in the v1 app
Well I'd had a look at the connector pinout in the manual and read a load of threads about different adaptors. I pointed a web browser at the IP of the Fox and couldn't get past the Login screen, but I thought I'd try it with PyPiModbus before I got the soldering iron out and it worked, so there's WiFi Modbus built in which is very nice!
Had a go at setting up SSL certificates on Home Assistant a while ago but wasn't getting anywhere so I've been writing my own Python code at the moment and am trying to work out what's been lost in translation in the Modbus and API documentation.
Maybe I should have another look at HA...
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I literally just noticed that as well!
I checked my router and saw I have an active inverter connected - which matched the S/N.
I checked my router and saw I have an active inverter connected - which matched the S/N.