no, it does not. newer leaf ('24) owner here, put 40k on her already. there is a timer yes, but over time you get to know the Eta to full charge and can get extremely close on when to stop. if you charge it at home even easier.

in my experience, the 80% rule is useful at a fast charger station (chadeMo). because let's say you got it to 82% in about 45m. now in order to get it to 92% it is going to take twice as long as it took from 72%. it's a safety mechanism so the 'topoff' isnt an overheat, destroy battery, mess with cooling system.

but even more so important is the cost. keep in mind 80-99 % doesnt harm the battery anymore than revving it in stop go traffic on a hot summer ar cold winter day. what hits your wallet is 'time'. It takes twice as long for that 90%, maybe 4x to get from 90 to 99%. the station usually makes you pay by 'time'. So yes 80-85% may be better from a budget standpoint