5 Things to Know About Robot Vacuum Battery Life

Expect two to three years of use Most robot vacuum batteries last about two to three years before they noticeably struggle to finish a cleaning run.

Mid-range bots use lithium-ion batteries good for 500 cycles A $300 to $600 robot typically has a battery rated for roughly 500 charge cycles. Daily use means about a year and a half, but most people run them less often.

Degradation is gradual First the robot can’t clean the whole house on one charge, then it dies halfway through the kitchen. By year three, you’re manually docking it more than you’d like.

Heat, deep discharges, and cheap chargers shorten battery life Running it until dead every time, storing it in a hot garage, or using a knockoff charger speeds up wear. Even with perfect care, the cells eventually wear out.

Replacing the battery is often worth it, but not always A replacement costs $40 to $60 and requires a screwdriver. But by year three, the robot itself may be showing its age in other ways.