[RichardInCA]

A question for the i5 hive mind - I’ve had a BMW wallbox installed for almost a year now. Very much it just does what it says - delivers power to my car, nothing more nothing less. I’ve noticed that the data on the app is pretty weird however. Sometimes charging sessions aren’t recorded, and sometimes the data is just completely off. Yesterday, I charged 32.74kWh and in the first screen (the “Last Month” tab) I’m seeing second charging session (12.58kWh) show up as yesterday that actually occurred on Oct 5 not Oct 19.

Then when I go to the “All” tab the 32.74kW session is nowhere to be found and the Oct 5 session (12.58kWh) shows up corrupted alongside a bunch of bogus charge time info that seems to suggest that the software didn’t properly acknowledge start and stop times for charging or something. To be clear the wallbox is working just fine - it charges the car, the charging sessions are recorded in the myBMW app, but the wallbox software seems screwed up.

Anyone else seen this?

[rgw]

My guess their app has a borked date time formatter. The sheer number of 255s is interesting because that is the max decimal number representation possible with one byte.

[RichardInCA]

Yeah - if you want to make the myBMW app look like a well-oiled machine, then take a look at the wallbox app. Thankfully the thing just works so I’m probably just going to ignore the app.

[Blue Sky]

Oh how cute! Look you can see their firmware uses a 6-byte date/time representation with the century not stored.

Yes 255s all over is not a good sign, memory corruption or bad pointers possibly.

Suggest rebooting by power cycling the unit by unplugging it, or with the appropriate circuit breaker if a hardwired installation . You might want to keep it unpowered for a minute if you have patience just in case there is a capacitor in there to avoid resets whenever there are momentary voltage drops.