Charge rate affected by temperature?

[Big Pete]

Stopped at Rockford Supercharger to charge on trip to Wisconsin, plugged in to 1A and slowly got to 300 mi/hr as anticipated. On my return trip stopped again but this time could not get anymore than 195 mi/hr. Both times started at 20% but the temperature had gone from 50 deg. to 25 deg. Jumped from 1A, to 2A, to 3A with similar results. Should this be expected?

 

[mrElbe]

Yes, battery temperature affects charging rate.

 

[Big Pete]

I know a cold battery would affect the rate, but both times car had been driven 100+ miles before charging so battery should have already been warmed.
Wasn't expecting a big difference just because the drop in ambient temp.

 

[Rocky_H]

It will be warm-ish from being used, but the temperature requirement for recharging lithium ion batteries is tougher than for discharging, so your battery was warmer than 25 degrees and can run the car at that temp, but not warm enough to take a really high recharging current yet.