I mean the Charge Anytime App. I assume the Ohme, as an approved charger, works the same as my Indra, as the other approved charger. I am not 100% on this, but I believe it's that they both use Kaluza as their underlying platform - see here...https://www.kaluza.com/ovo-energy-launches-kaluza-powered-electric-vehicle-charging-plan/
Basically there are two options but you can only use one of them - if you have an approved charger, then using the charger is better as you can get access to Charge Anytime rates at anytime - with the Charge Anytime App, it's only during the defined overnight window.
With the Charger, at least with Indra, you use their Charger App and you tell it that you are using Ovo Anytime as your tariff. You then do the usual API connection with your Ovo logon details and both Indra and Ovo show that they are connected. Then I set my M3 to its charging limit as normal and that's all I do with the Tesla. Then when the charger sees the car plugged in it uses the schedule you have set in the Indra app. The schedule is a 'Ready by' and has a time for each day, default is 7am weekday, 9am weekend. Then the car charges on an assumption that you are not going to unplug the car until then. In my experience it has worked flawlessly, but unusually, so Sunday afternoon it charged for quite some time at around 5kW, then trickled at 1kW or less for a few hours on Sunday evening, then between Midnight and 2am it charged at the full 7.4kW or thereabouts, then it did a couple of bursts at around 4am and 7am to bring it up to the 80% at which point my Tesla stopped charging (presumably via however it is the car and smart charger communicate via the cable as Ovo no longer has access to my Tesla account). I would assume that it's effectively the same with the Ohme, just a different App for your charger.
With the App, it's different and is designed for dumb chargers and it's where Ovo uses a logon to your Tesla account to find out where the car is up to. You have to install the Charge Anytime App and connect Ovo to your Tesla account. In this scenario, you plug your charger in to the car and Ovo uses the settings you have put in the Ovo App to start and stop charging from the car itself. Obviously as it's a dumb charger, there's no App for the charger. As above, the main difference as I understand it is that the Ovo App has a more fixed schedule, you provide a single charge window, but I could be wrong as I only used it once and it caused issues as covered previously. Maybe you could set the window for all day, when I did download the app, I just assumed it was fixed to midnight to 6am as that's the default, I never tried to change it.
They both have 'Boost' or 'Charge Now' or I think 'Urgent Charge' in the Ovo App where you can get the full 7.4kW on demand, but at full price.
As mentioned, I had issues when I installed both, Ovo told me that they cause a conflict as both are trying to control the charging process and it ends up that neither of them do and it constantly wakes up the car as they both try and work out what stage the car is in. I missed this one small reference on their website...
There are now two ways you can get Charge Anytime:
If you have both, we recommend connecting to Charge Anytime with your charger.
Hope that clarifies! There is another benefit to using the charger, at least I think so, just not been able to test, I believe that I could connect any car and get the same cheap electricity, whereas with the app, it's strictly that one car (unless the app supports multiple cars, again something I never checked).
