The e-Golf has a 35.8 kWh battery, driver selectable regenerative braking and, according to Jonny Smith of Fully Charged, he got 130 miles without using regenerative braking and without reducing the output by selecting Eco or Super Eco modes. There is also a Heat pump optional extra which reduces the electric power usage of the heating system by recycling heat from ambient air and waste heat from the drivetrain components. Mind you, most of my driving is done with no heating on anyway. I normally only do 4 miles at a time, and, to save fuel by letting the engine warm up, I leave the heater matrix closed off. Only time I put the heater on is when the coolant temperature achieves 80°C, which only ever happens on my weekend 80 mile jaunts. And I reckon the e-Golf will happily manage 80 miles, plus a bit of cabin heat, on one charge.
Mind you, that's a moot point, as I will be moving south of Edinburgh before getting an EV (whatever I go for), so I won't have my 80 mile weekend trips!