Occasionally, in the morning, long after charging is complete, I disconnect the e-fuel nozzle and get in the car to leave. I "press" the car on, and I get noise (sounds like a "loud" whiring, perhaps like the fan(s), not the quiet hum of the cooling pump during charging) for a short while, probably less than a minute.
It might happen only after 80% charging, since I never heard the noise during the first month or so when I was only charging to 100%.
See SOC/GID-Meter and CAN-Do Info
2010 Prius, now for sale
2011 LEAF, sold in 2015
2018 Tesla Model 3
2014 Tesla S, Model 3 in 2019
Solar PV: 33 x 225W -> 7 kW max AC
To Sell: X-treme 5000Li EV motorcycle