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Advanced battery power

Built into every E-Series mower

Brochures & pricing

Exceptional performance, every time

Built with precision at every stage

Every Dennis E-Series mower is powered by a battery designed specifically for the demands of professional turf care. Built in the UK and engineered to work seamlessly with our machines, each battery combines high-density cells, intelligent battery management and rigorous testing to deliver dependable runtime and consistent performance. From initial design through to manufacture and validation, every stage is focused on quality, reliability and giving grounds professionals confidence in their equipment, day after day.

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Unique Battery Management System (BMS)

Outstanding weld quality & precision

Custom built in the UK

Robust performance testing

Exceptional quality from design through to battery performance



High-density NMC cells for longer runtime

Specially selected high quality, high density cells, providing more hours of operation between charges.

Precision laser welding for maximum reliability

Precision laser welding ensures the strongest cell and module connections for reliability, efficiency, and battery longevity; with consistently strong and unbreakable joints throughout the pack.

Tailored BMS performance & safety

Unique Battery Management System (BMS) tailored to our exact requirements, delivering unparalleled performance while optimising safety.

Certified, tested & proven reliability

UKCA certified, rigorously tested for shock, vibration, thermal extremes, cycling and humidity, with full verification for traceability and confidence.

Machines over 30"

MACHINE // ES-30, ES-34SL, ES-34R, ES-36, ES-760 & ES-860

NOMINAL VOLTAGE // 48V

PEAK DISCHARGE // 111Ah

CAPACITY // 111Ah

CHARGE RATE // 58Ah

IP67 rated & UKCA certified

Machines up to 26"

MACHINE // ES-20, ES-24, ES-26, ES-22U, ES-22, ES-510 & ES-610

NOMINAL VOLTAGE // 51.8V

PEAK DISCHARGE // 65Ah

CAPACITY // 32Ah

CHARGE RATE // 58Ah

IP30 rated

Power our way

To deliver the cutting performance professionals expect from Dennis, we have developed a battery system engineered specifically for the demands of fine turf maintenance. Designed to our exact specifications, every battery is built in the UK, from cell selection and module assembly to the battery casing and our proprietary Battery Management System (BMS).

With all Dennis E-Series machines you can expect:

A long run time

Recharge in under 2 hours

Low running costs

Minimal emissions & noise

Minimal hand to arm vibrations (HAV's)

Robust, reliable & compliant

The unique approach to the construction of every Dennis E-Series battery includes rigorous testing and quality control, ensuring complete validation and confidence in every machine.

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Intentional cell selection

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Market leading module construction

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Individual approach to battery pack creation

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Robust & exhaustive testing

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E-Series, exceptional performance every time

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World-class quality control

The E-Series

With professional battery life and range, ultra low noise and vibration, Dennis E-Series mowers are an uncompromising low CO2 alternative to petrol machines. Precision engineered for exceptional performance the Dennis E-Series can also support turf professionals with their sustainability and environmental initiatives.

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ES-20, ES-24 & ES-26

The ES-20, ES-24 and ES-26 are our range of ultra quiet, low vibration and easy to use battery mowers. Available with 7 or 10 bladed cylinders, these mowers provide maximum performance whether cutting around complex shaped lawns or sporting surfaces that require a fine cut.

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ES-30, ES-36

The Dennis ES-30 and ES-36 are 30”(760mm) and 36” (910mm) battery powered mowers built on the foundations of the long established Dennis Premier, a favourite amongst many grounds staff.

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ES-22

The Dennis ES-22 Ultra is a quiet battery mower with a 560 mm (22”) cutting width. With its 7 or 11 bladed cylinder and ‘no tools’ required height of cut control, the ES-22 Ultra provides an ultra fine finish for that desired playing surface can be achieved.

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ES-22 Ultra

The ES-22 Ultra, a dedicated battery mower providing an ultra fine finish on bowling greens, golf greens and tees, and cricket pitches.

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ES-34R Rotary Mower

The Dennis ES-34R is a 34” (860mm) battery powered twin blade rotary mower for fine turf cutting and cleaning up operations. Zero-emission performance with twin-blade collection system for football, rugby and cricket surfaces.

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ES-34SL | Dennis ES-34SL

The ES-34SL by Dennis is a 34” battery-powered cylinder mower for fine turf. Lightweight and precise with 0.1 mm height adjustment, 10-hour runtime and consistent stadium-quality presentation.

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ES-510, ES-610

Dennis ES-510 and ES-610 E-Series electric cylinder and cassette mowers for fine turf maintenance. Professional cassette system for precision cutting, scarifying and grooming on golf greens, bowls, lawns and sports turf. Available in 20” (510 mm) and 24” (610 mm) these battery powered mowers utilise the same range of interchangeable cassettes as the Dennis FT.

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Dennis ES-760, ES-860 - Cylinder Mowers

The ES-760 and ES-860 are 30” (760 mm) and 34” (860 mm battery powered turf maintenance systems which build on our considerable experience of the Dennis G-Series machines. Incorporating the same wide range of interchangeable cassettes to cut, scarify, verticut, brush and surface spike.

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E-Series feedback

Testimonials

  • Dennis is absolutely the best brand you can get for a football pitch or any kind of sports pitch. I’d always admired other clubs using Dennis equipment, and now we’ve got one ourselves, it feels elite. The electric mower has been a massive upgrade for us as a green club — the noise is cut in half, there’s no pollution, and it’s incredibly easy to use. I’d never used a Dennis machine before, but within three weeks people thought I’d been doing it for years. The battery life is fantastic, the adjustable speed settings are brilliant, and the quality of the pitch has become so good that other groundsmen now come to our ground just to ask how we do it.

    Bryan Hall

    Chairman, Peckham Town FC

  • There is very limited noise and vibration levels with the ES-36's. Staff can work comfortably and safely. The mowers are super accurate; we can adjust speed for perfect scarifying and verticutting and use the same cassettes from our Dennis petrol Premier.

    Andy Jackson

    Head of Grounds, Stoke City FC

  • Using the ES-34R we can be greener and more environmentally responsible. We can clean up without any disruption to media after games. There’s no pollution for our staff to breathe in and the vibration on the machine is much lower too. From a financial perspective the club is really happy. There’s no engine, so a lot of costs are gone straight away. Over the years, financially, it makes total sense. We absolutely love the screen. We can adjust walking speed, blade speed and choose exactly how we want to clean up or cut. We can also monitor battery life, so the lads know exactly how much charge is left. You can even see distance covered. It just makes everything more controlled and more professional.

    Matthew Hallam

    Grounds Manager, Notts County FC

  • I looked at other battery mowers, but it was always going to be Dennis. I’ve always been a fan of Dennis and SISIS—they make the best machines on the market. We replaced our PRO 34R with the electric ES-34R, and while I loved the petrol version, the ES-34R is on another level—the best mower I’ve ever used. For a 34-inch mower, it’s incredibly easy to manoeuvre, and being electric means fewer problems. We’ve used it almost daily without a single issue, and it’s saved us money on maintenance too.”

    Richard Hare

    Head Groundsperson, Bromsgrove School

  • The ES–34R battery life is unbelievable, one mower will do a whole pitch and you can still have at least 40% battery life left.

    Ian Lucas

    AFC Bournemouth

  • With the ES-860 mowers we can be on the pitch next to the players while they are training, and they are so quiet that they do not stop us. It is a vast improvement in productivity.

    Scott Brooks

    Grounds Manager, OGC Nice, France

  • During Covid, we were only allowed to use quieter electric machines after games, and the ES-34R was perfect. Dennis mowers have always been reliable, with great back-up, and this one adds speed and flexibility. The blade settings let us switch between powerful debris collection or a quick full-pitch cut in under an hour. The LCD screen makes adjustments simple, charging is fast, and battery life is outstanding—we can do a full pitch with 70% charge left. The ES-34R leaves a bold stripe, is comfortable to use for hours, and has become a key part of our matchday preparation.

    Anthony Parker

    Deputy Head Groundsman, Wolverhampton Wanderers FC

  • We can get a whole pitch cut on a single charge without fear of the mower battery running out.

    James Mathewson

    Head Groundsperson, Colliers Park

  • Battery Equipment has come a long way in the last few years, but I believe Dennis has gone a step further and made it even better. We no longer have to wear ear defenders, have no vibrations or noise. Electric is no longer the future, its the now.

    Richard Dexter

    Head of Grounds & Gardens, Oakham School

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The new ES-34SL

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Brochures & Pricing

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E-Series news

Latest news
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Thursday 14 May 2026

Pedestrian Battery-Powered Mowers vs Pedestrian Petrol Mowers: Which is the right choice for your groundskeeping needs?

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Tuesday 12 May 2026

Stoke City FC Advances Sustainability with Full Switch to Electric Dennis Mowers

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Tuesday 27 January 2026

Dennis Showcases Electric Innovation and Proven Turf Machinery at BTME 2026

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