I’ve had the X22 charger for a few months now, and I’ve noticed the charging speed recently is being throttled rather aggressively.
When I first got it installed around April this year, it would charge at 22kW until it would throttle due to temperature. However, I would still get anywhere between 55-60 kWh over a 3 hour period, depending on ambient temperature of the garage. The garage itself normally does not exceed 22 degrees.
A few months after, it would start throttling more aggressively due to temperature, down to 12-13kW in the peak of winter. On a 12 degree day, the ambient temperature around the charger (the garage) would be approximately 15 degrees. The charger itself did not exhibit any hot spots on the surface, so I’m at a loss to figure out how I could actively cool down the charger further.
More recently now (around August?), the charger no longer says it is being throttled by temperature, but rather it just drops charging speed from 22kW to 13kW over 30 minutes. During this period where it was throttled to 13kW, I did notice a “limited due to home load” notification in the app. Surely that’s incorrect as I was only drawing 10 kW from the grid at that time. In the past before the X22 throttles, I could draw up to 30kW from the grid for extended periods of time without triggering “home load” throttling (22kW from X22 + home loads - solar). With this new throttling scheme, I’m now getting 45-50 kWh in a 3 hour period, far from the 55-60 kWh I was getting previously.
Now that summer is approaching, should I be expecting even worse throttling on the X22? I converted to a 3 phase connection for 3 phase EV charging, assuming I could get at least 80% of the 22 kW charging capacity, but seeing it throttle down to 12-13 kW in the middle of winter in a garage is quite concerning.