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2021.4.15 Charging Issues

After upgrading Model 3 to 2021.4.15, charging is taking longer. It appears that the charge regulator is limiting the charge rate after an hour or two of charging at full rate. Wondering if anyone else is experiancing similar issues..? Thoughts/resolution..?

My typical charge approach is as follows:
  • vehicle is plugged in to Tesla Gen3 Wall Connector (60A Breaker for full 48A feed)
  • charge limit set to 90%
  • plug in when charge level is under 30% (typically under 25%)
  • charge set to start at 01:30 a.m. and completes after 4.5 to 5 hours (06:00 a.m.)... roughly 11 kw/hr
  • last two charges (after the upgrade), it appears to charge at 11 kw/hr for the first hour or so then reduces to 6 kw/hr for the remaining period
  • reduced charge translates to charge not ready (i.e. to 90%) at time of morning departure
Following are screenshots of my consumption graphs before and after:

2021-03-19 (start at 01:30 ... 11 kw/hr prior to upgrade):

2021-04-04 (start at 01:30... before upgrade):

2021-04-15 (first charge after upgrade... start at 01:30 ... starts charging at 11 kw/hr and reduces to 6 kw/hr after 1.5 hours):

2021-04-20 (start at 01:00... first hour is 11 kw/hr then rate reduced to 6 kw/hr )
  • Informative
Reactions: pilotSteve


Active Member
Supporting Member
Jul 29, 2018
Sounds a lot like an overheating Gen3 HPWC.


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