Our verdict
Aldi Specialbuy cordless that lands every March and disappears within two weeks. For a tiny urban lawn under 250m² this is the cheapest way into cordless. Don't expect it to last past 5 years and don't bank on getting a replacement battery when the original dies.
Pros & cons
Pros
- £149 with battery and charger
- Aldi back-with-receipt support
- Light at 14kg
- Ferrex 40V battery shared with hedge trimmer / strimmer
Cons
- No warranty extension available
- 2Ah does ~250m² per charge — barely enough
- Replacement battery £45 but limited availability
- Plastic everywhere
Full specs
| Type | Cordless |
|---|---|
| Cut width | 36 cm |
| Engine / Power | Ferrex 40V brushless |
| Weight | 14 kg |
| Deck | Plastic |
| Self-propelled | No |
| Rear roller | No |
| Mulching | No |
| Cutting heights | 6 positions |
| Bag capacity | 40 L |
| Suited to lawn | Small |
| Noise level | 75 dB |
Buying second-hand
Used £30-60. Always check the battery still holds charge — Aldi cordless batteries are the weak point. If the seller can't demonstrate a 15-minute runtime, walk away. Don't pay extra for a cracked grass box — they're £18 from Aldi when in season.
Where to buy the Ferrex 40V 36cm Cordless
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Repair-cost reference
UK 2026 ballpark prices for the parts you're most likely to need on this mower. OEM is dealer-genuine; aftermarket is what you'll find on eBay or generic small-engine suppliers. Use these to sense-check any quote and to negotiate on used buys.
| Part / job | OEM | Aftermarket |
|---|---|---|
|
Replacement 36cm blade
Annual sharpening is free; replace when bent or cracked.
|
£24–£32 | £8–£12 |
|
Replacement battery
Wear part — typical 3–5 years to 80% capacity. The biggest single repair cost on any battery mower.
|
£90–£180 | £55–£120 |
Fair-offer calculator
Tell us about a specific used listing for the Ferrex 40V 36cm Cordless you're looking at. We'll compute a fair offer range from our used-market data and the condition signals you provide.
Calculations are guidance, not gospel. Used-market prices vary by region (Scotland is typically 10–15% cheaper than the South-East), season (October cheapest, March most expensive), and seller motivation.
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