The Neato Botvac D7 has an outstanding battery performance. On its maximum ‘Turbo’ mode, it lasts about an hour and a half, while its lowest setting, ‘Eco’ mode, keeps the vacuum running for around two hours. Unfortunately, when the charge is below 27%, the vacuum doesn’t accept any clean jobs and it looks for its docking station. Luckily, you can see when it’s close to running out of battery life as the battery button is solid green when it’s fully charged, and the button lights up yellow when you’re at the last 35% of the battery.