Without the infuriating cord that loves to wind itself around trees and find its way under your feet, cordless mowers allow for unrestricted movement, and often a greater range compared to corded mowers.
But how do these mowers actually work?
Unlike corded counterparts, cordless electric lawn mowers are powered by a rechargeable battery.
Cordless Lawn Mower Batteries
These will usually be Nickel-Cadmium (NiCd) batteries or (Lithium-Ion) Li-Ion batteries, both have their own advantages and disadvantages.
NiCad batteries are cheaper, but tend to last for less time and also need to be fully discharged before recharging otherwise they can lose their power density and stop running for so long.
This reduces the power output over time, and means you end up charging more and more.
Li-Ion batteries can also deteriorate after a few years, but tend to last longer and also provider higher power for longer than NiCad batteries.
Cordless Lawn Mower Range
Before you have to charge your battery, most cordless lawn mowers will cover the area equivalent to an average tennis court, which is roughly 250m2.
But this depends on how long the grass is, how rough the ground is, and the general condition of the lawn.
Debris or moisture on the grass can create longer cutting times and lower battery life expectancy.
If your lawn is larger than the average tennis court, then you will almost certainly need to make a pit stop to recharge your mower. Or, if you have two batteries, you can simply switch a full battery and continue mowing.
Typically, a cordless lawn mower battery might last from 20 – 30 minutes.
If you’re in the market for a battery-powered mower, don’t forget to check out my guide to buying the best cordless lawn mower.