# How long do cordless lawn mowers last?

Source: https://mowandedge.co.uk/blog/how-long-do-cordless-mowers-last
Published: 2026-10-12
Publisher: Mow and Edge

**In short:** A cordless lawn mower that is kept clean, dry and stored well can last many seasons. The battery usually wears first, gradually losing capacity, but it can be replaced. Motors, especially brushless ones, are long lived, and plastic decks do not rust. A repair is usually worth it for a new battery, blade or switch, but less so for a failed motor on an older, budget model.

Cordless mowers are simpler than petrol mowers, with no engine, fuel system or oil to fail. That should mean a long life, but batteries, switches and plastic parts have their own weak points. This explainer goes through what wears, roughly in the order it tends to happen, what you can replace and when it is time to buy a new mower instead of repairing the old one.

## What decides how long a mower lasts

Build quality, how often it is used, how it is stored and how big the lawn is relative to the mower all matter. A small mower working hard on a large lawn will wear faster than a bigger mower doing the same job easily. Storing the mower dry and the battery indoors makes the biggest difference of anything you control.

## Part by part

Most mower wear is concentrated in a handful of parts. The table below sets them out.

| Part | What happens | Fix |
| --- | --- | --- |
| Battery | Gradual capacity loss | Replace the battery |
| Blade | Blunts and nicks | Sharpen or replace |
| Switches and safety key | Can fail with damp and wear | Replace the part |
| Wheels and height lever | Wear and stiffen | Replace or lubricate |
| Grass box | Mesh tears, plastic cracks | Replace the box |
| Motor | Long life, brushes can wear on brushed motors | Service agent |
| Deck | Plastic does not rust; steel can | Clean and dry after use |

Cordless mower parts and wear

## The battery

Batteries are the part most likely to need replacing. Lithium cells lose capacity with charge cycles and age, so you notice shorter run times over the years. A replacement battery restores the mower to full run time. If you are on a shared platform, a battery bought for another tool can also power the mower.

[How long a mower battery lasts per charge](https://mowandedge.co.uk/blog/how-long-does-a-cordless-mower-battery-last)

## Motor and electronics

Electric motors have few moving parts and last well if kept clean and cool. Brushless motors have no brushes to wear. Brushed motors may eventually need new brushes. Clogged air vents make motors run hot, so brush them clear after mowing. Our explainer on [brushless and brushed motors](https://mowandedge.co.uk/blog/brushless-vs-brushed-mower-motor) covers the difference.

## When a repair is worth it

Simple repairs such as a battery, blade, wheel, grass box or safety key are usually worth doing on any mower in otherwise good condition. A failed motor or main circuit board is a bigger decision. Compare the cost of the part and labour with a new mower, and consider the age and quality of the mower. Check the warranty first, as many makers offer extended cover on registration.

- Worth repairing: battery, blade, wheels, grass box, handle clamps, safety key
- Think carefully: switch assembly, charger
- Often not worth it on an old budget mower: motor, main circuit board, cracked deck

## How to extend your mower's life

Most of it comes down to keeping the mower clean and dry. The list below sets them out.

1. Brush the deck clean after each mow
2. Do not hose it unless the maker says you can
3. Keep the blade sharp
4. Do not mow wet grass
5. Store the battery indoors, part charged, over winter
6. Keep the mower somewhere dry, off a damp floor

[How to clean a cordless mower](https://mowandedge.co.uk/blog/how-to-clean-a-cordless-mower)

## Buying a mower that lasts

Choose a mower sized for your lawn so it is not always working at its limit, from a brand with spares available in the UK. Check the warranty length on the mower and the battery separately. Our guides to the [best cordless lawn mowers](https://mowandedge.co.uk/best/best-cordless-lawn-mower) and [cordless mowers for large gardens](https://mowandedge.co.uk/best/best-cordless-mower-for-large-garden) list models from established brands such as Makita, Bosch, Greenworks and Hayter.

## Signs your mower is wearing out

Shorter run times on a full charge usually point to an ageing battery. A mower that cuts out under load with a fresh battery may have a switch or motor problem. A ragged cut is usually a blunt blade rather than a tired motor. Unusual vibration often means a bent or unbalanced blade, which you should fix quickly to protect the motor bearings.

If the mower is noisy, smells hot or sparks, stop using it and have it checked. Our guide to [cordless mowers not working](https://mowandedge.co.uk/blog/cordless-mower-not-working) works through the common faults.

## Frequently asked questions

**How long does a battery lawn mower last?** Many seasons with good care. The battery is usually the first part to need replacing.

**Do cordless mowers last as long as petrol ones?** They have fewer parts to wear and no engine servicing, so a well kept cordless mower can last well.

**When is a lawn mower not worth fixing?** When the repair costs a large share of a new mower, usually for a failed motor or circuit board on an older model.

**Can I replace a cordless mower battery?** Yes. Buy a genuine battery from the same platform and voltage.

## Buying guides on this topic

- https://mowandedge.co.uk/best/best-cordless-lawn-mower
- https://mowandedge.co.uk/best/best-cordless-mower-for-large-garden
- https://mowandedge.co.uk/best/best-cordless-mower-for-small-garden