That’s why we’re still waiting on a few battery upgrades. The Wired article cited a two hour endurance if flown conservatively: This Record-Breaking Electric Plane Stomps a Gas-Powered Cessna | WIRED
If only we could get the power to weight ratio and torque of an electric motor with the range of a gas burning piston. The Long-EZ is already amazingly efficient with a 1500-2000 mi range on 50 gallons of avgas, so it probably makes a decent testbed for early stage electric conversions.