Battery powered lawn mowers have come a long way since the early days of weak motors and ten-minute runtimes. In 2026, the best models rival petrol mowers for cutting power while staying whisper-quiet and maintenance-free. No fuel mixing, no pull cords, no emissions — just charge and go.
Not all battery mowers are equal. Voltage, amp-hour ratings, motor type, and battery ecosystem all make a massive difference to real-world performance. A 56V mower with a brushless motor will handle thick, wet grass that would stall a basic 18V model. And if you already own tools from Makita, EGO, or Einhell, choosing a mower that shares batteries could save you hundreds.
In a rush? The Worx WG737E 40V is the best battery powered lawn mower for most UK gardens. Twin 20V batteries deliver genuine 40V power, the brushless motor handles thick grass without bogging down, and IntelliCut automatically adjusts torque to match conditions.
| Mower | Voltage | Cut Width | Battery | Best For | Price |
|---|---|---|---|---|---|
| Worx WG737E | 2x20V (40V) | 37cm | 2x4Ah included | Best overall | ~£300 |
| Makita DLM432Z | 2x18V (36V) | 43cm | Body only | Best battery system | ~£200 |
| EGO LM2135E-SP | 56V | 52cm | 7.5Ah available | Best premium | ~£650 |
| Greenworks G40LM41K2X | 2x40V | 41cm | 2x2Ah included | Best mid-range | ~£259 |
| Einhell GE-CM 18/33 | 18V | 33cm | PXC system | Best budget | ~£150 |
| Webb Eco 40V | 2x20V (40V) | 43cm | 2x4Ah included | Best runtime | ~£297 |
| Flymo EasiStore 340R | 2x18V (36V) | 34cm | 2x2.5Ah included | Best compact | ~£150 |
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The Worx WG737E runs on twin 20V 4Ah batteries delivering a combined 40V system — proper power for thick grass. The brushless motor draws less current than brushed equivalents, translating directly into longer runtime. IntelliCut automatically adjusts blade speed based on grass thickness, conserving battery on thin patches and ramping up through dense growth. Real-world runtime is around 35-40 minutes on a maintained lawn.
The 37cm cutting width suits gardens up to 400m². Seven height settings from 25mm to 75mm. Both batteries are part of the Worx 20V PowerShare ecosystem — drills, hedge trimmers, blowers all use the same packs.
Battery verdict: Twin 4Ah packs with IntelliCut stretch every charge further than competitors at this voltage. Outstanding value at ~£300 with everything included.
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If you own Makita 18V LXT tools, this is a no-brainer. It runs on two 18V batteries simultaneously for 36V output — the same packs that power drills, saws, and blowers. Sold body-only at ~£200, slot in your existing batteries and you're cutting immediately. The 43cm deck is generous, and the build quality is typical Makita — industrial-grade.
The LXT platform is the largest cordless tool ecosystem globally with 300+ tools sharing the same batteries. Body-only pricing makes this the best value mower on this list if you're already invested.
Battery verdict: The LXT platform saves serious money. Buy body-only and use what you already own.
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The EGO LM2135E-SP is the closest a battery mower gets to replacing petrol. Its 56V Arc-Lithium system delivers raw power that lower-voltage models cannot match. Variable-speed self-propelled drive handles slopes without wrestling. A 52cm steel deck puts this in large-garden territory — gardens up to 800m² on a single 7.5Ah battery.
Where 36V and 40V mowers slow down in thick, damp grass, the EGO powers through. The 56V platform is cross-compatible with EGO's hedge trimmers, blowers, chainsaws, and strimmers.
Battery verdict: 56V Arc-Lithium is the highest voltage in consumer cordless mowing. Genuine petrol-replacement power.
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Two 40V 2Ah batteries included alongside a rapid charger that tops up in 60 minutes. Hot-swap while charging for effectively unlimited runtime. The 41cm deck handles gardens up to 500m². Five height settings, 50L bag, simple lever height adjustment.
At £259 with two batteries and rapid charger, the value is strong. You'd spend more on batteries alone for some competitors.
Battery verdict: Dual batteries with rapid charging means zero downtime. Excellent value package.
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A single 18V Power X-Change battery powers this compact mower for small gardens up to 200m². The brushless motor maximises efficiency from every charge. At 33cm and under 10kg, it's designed for terraced houses and small back lawns.
The real value is the PXC ecosystem — 200+ tools on the same 18V battery. Buy a couple of 4Ah packs and you've powered half your toolkit. Body-only options bring the mower under £100.
Battery verdict: Single 18V limits power, but the ecosystem and brushless motor make every amp-hour count.
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Twin 20V 4Ah batteries deliver a claimed 60 minutes — real-world testing confirms this on maintained lawns. That's enough for gardens well over 500m² on a single charge. The 43cm deck with 50L collector handles larger lawns efficiently. Six height positions from 25mm to 75mm.
At ~£297 with both batteries and charger, the value is solid for the runtime you get.
Battery verdict: 60-minute runtime is class-leading at this price. Ideal where finishing on one charge matters.
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Vertical storage design lets you stand this mower upright — barely more floor space than a vacuum cleaner. Twin 18V batteries provide 36V combined, with 34cm cutting width and rear roller for stripes. Runtime is around 30 minutes — sufficient for gardens up to 300m².
Uses the Bosch Power For All 18V battery platform, shared across Bosch Home & Garden tools. At ~£150, excellent value for anyone prioritising storage convenience.
Battery verdict: Compact form factor and Bosch ecosystem compatibility. The storage solution is the real selling point.
Amp-hours measure capacity — a 4Ah battery stores twice the energy of a 2Ah at the same voltage. Real-world runtime depends on grass conditions (thick wet grass drains 30-50% faster), motor type (brushless is 15-25% more efficient), cutting height, and self-propelled drive.
Rough guide: a 40V mower with twin 4Ah batteries manages 35-45 minutes on a maintained lawn — enough for 300-500m².
Advice: Choose your ecosystem before choosing your mower. If starting from scratch, pick the platform covering the most tools you'll need.
Brushless motors are 15-25% more efficient, deliver more torque, last longer (no carbon brushes to wear), and run quieter. They're standard on mid-range and premium mowers. Brushed motors still appear on budget models and work perfectly well — you'll just get slightly less runtime and eventual motor wear after several years.
Modern lithium-ion batteries are rated for 500-1,000 charge cycles before capacity drops below 80%. For weekly mowing March-October (~30 sessions/year), that's 16+ years at 500 cycles. In practice, batteries degrade faster if you drain them to zero, leave them in freezing sheds, or store them fully charged for months.
To maximise lifespan: Store at 40-60% charge over winter. Keep indoors — lithium-ion cells dislike temperatures below 5°C. Avoid running completely flat. Use the manufacturer's charger.
40V and 56V mowers with brushless motors handle damp grass reasonably well — slow your pace and empty the box more often. 18V models will struggle and may stall. Mowing dry always gives better results and longer battery life.
18V: up to 200m². 40V with twin 4Ah: 300-500m². EGO 56V with 7.5Ah: up to 800m². For gardens over 600m², get a model with rapid charging or invest in spare batteries.
At the premium end (EGO 56V), absolutely. For most gardens under 500m², a 40V mower provides more than enough power. Petrol still wins for very large gardens (1,000m²+) and all-day professional use. See our petrol mower guide for comparison.
The Makita DLM432Z is body-only. Worx, Webb, Greenworks, and Flymo include batteries and charger. EGO offers both options. Always check what's included — battery kits add £100-300.
Standard chargers: 60-90 minutes for 2Ah, 2-3 hours for 4-5Ah. Rapid chargers cut this significantly — Greenworks does 2Ah in 60 minutes, EGO does 5Ah in 40 minutes. Two batteries plus a rapid charger is the smartest investment for uninterrupted mowing.
Related guides: Best Cordless Lawn Mowers · Best Petrol Mowers for Large Gardens · Best Robot Lawn Mowers
