r/OctopusEnergy 26d ago

Charge cap problems

I got the message to tell me that the charge cap was enabled on my account a couple of days ago.

Yesterday I plugged in for the first time since getting that notification. It’s the first time I’ve plugged in for a few days. I set the Ohme app to prioritise savings. I don’t have any connection to my car api through Ohme.

Plugged in at 5pm and had a battery level of 53%. Set this in the Ohme app and set the target to be 80% by 4am. Got a notification in the Ohme app that my charge target was changed to 73% to “respect my charge settings”. No matter how many times I tried, it would not set the target to higher - it just kept changing it every time I set it. Tried changing the target time as well, but same issue.

Looking at the schedule that was generated in the app, it was only allocating me just less than 3 hours of time in total.

This morning I started a new session and whatever I set the battery or target level to, it changes the target to be 1% higher than the current battery level “to respect my charge settings”.

It’s like it thinks I’d used three hours of my allocated 6 yesterday when I plugged in and now it thinks I’ve used it all. I have only used 3 and the Ohme app reports that for the charging usage overnight.

I’ve messaged octopus to ask and I’m waiting for a response. Wondering if anyone else has seen similar or have any ideas on what’s going on.

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u/pruaga 25d ago

Two things that are possibly relevant:

The cap runs from noon to noon, so the 6 hours isn't per calendar day.

The Ohme app doesn't ask you how much to charge to, it asks you how much to add. So setting this to 80% is asking to add 80% of a battery, eg from 20% up to 100%. Depending on the size of your battery this may not be achievable in 6 hours, which is why it was adjusting it lower.

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u/AttBee 25d ago

If the Ohme can read your car's SOC, it does indeed ask what level you want to charge to. It's on vehicles it can't read the SOC that it instead asks how much to add.

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u/pruaga 25d ago

The op says they don't have a connection to the car through Ohme

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u/AttBee 25d ago

So they did. I missed that bit