Do batteries charge when you are driving on the freeway in EV later mode?
I often take long trips from the SF Bay Area up to Eugene, OR and down south to the LA area and don't see the battery values change except when descending long grades. I always plug in when I get to my destinations.
No but we have ways.....
BEFORE you reach hybrid mode with at least a minimum of 1 EV mile left in the battery (but not full as you'll need space), switch to EV Later for your journey.
On the long downhills, switch back to EV Now as you coast or lightly brake during the descent and the regen will flow back into the battery raising your SOC (state of charge) level and your EV miles will go up!
At bottom of descent, switch back to EV Later and the programming will reset to the new, higher SOC.
Rinse, lather, repeat for the next downhill. On long drives or really steep grades, folks have reported filling the entire battery.
For best efficiency, use those "free" EV miles at city/urban speeds not highway.
That's it. Pretty easy. The hard part is just remembering to do it and to switch back.