The shoulder-mounted brush cutter RURIS RR3845e is a gardening tool powered by a 40V 5 Ah Li-Ion battery. This tool has the advantage of being quieter and easier to handle than internal combustion engine brush cutters, as it doesn't require fuel and doesn't emit exhaust gases. In addition to these advantages, battery-powered brush cutters also offer greater freedom of movement as they are not dependent on an electric cable.
Ruris Alfa UP Innovation
Users can be confident that the battery will be ready for use even after a long period of storage. The RURIS ALFA UP innovation, through its function that allows the battery to be restarted after storage between 6-12 months, brings numerous benefits to Li-Ion battery-powered gardening equipment, protecting the battery from damage.
Interchangeability and Versatility By purchasing a RURIS product, your garden can now benefit from all RURIS equipment at a reduced cost, as Li-ion batteries are interchangeable.
Performance
The brush cutter's brushless electric motor is an advantage as it requires no maintenance and has a longer lifespan than brushed motors. The total power of 200 Wh indicates the amount of energy stored in the battery, and this value indicates that the brush cutter can be used for several hours depending on the intensity of use. Additionally, the 40V 5 Ah Li-Ion battery provides sufficient power for cutting grass.
The cutting diameter with a trimmer line of 380 mm and the cutting diameter with a blade of 255 mm allow the user to choose between multiple cutting options, depending on the working area and your needs. The 26 mm tube diameter and the rigid and modular drive shaft ensure increased stability during use, resulting in more precise and efficient cutting.
Comfort
The ergonomic two-segment handles ensure a comfortable grip and easy handling of the brush cutter, while the low vibration level reduces fatigue during use. Additionally, the weight of 3.8 kg makes the brush cutter easy to maneuver and transport.
Ecological
Another important advantage of the shoulder-mounted brush cutter RURIS RR3845e is that it doesn't emit exhaust gases, making it a more environmentally friendly option than gasoline-powered models. Additionally, the electric motor requires easier and cheaper maintenance than a gasoline engine, as it doesn't require oil changes and other related maintenance.
Portability
Due to the absence of a power cable and the presence of a powerful and lightweight battery, users can cut grass anywhere without being limited by the presence of a power source or a limited cable length.
Reduced Noise
The shoulder-mounted brush cutter RURIS RR3845e is also quieter than gasoline variants, making it suitable for use in residential areas or near homes without disturbing neighbors. Additionally, due to the fact that there is no need to fill a fuel tank or handle flammable liquids, using this type of brush cutter is safer and easier.

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| Autocut | Double wire, Bump Feed system - 2.4mm*5m | Double wire, Bump Feed system - 2.4mm*5m | Double wire, Bump Feed system - 1.6mm*5m | |||||||||||||||||||||||||||||||||||||||||||||||
| USB-C Port | Bidirectional | Bidirectional | 5V-12V, 18W | |||||||||||||||||||||||||||||||||||||||||||||||
| USB-C cable | 1 m | 1 m | ||||||||||||||||||||||||||||||||||||||||||||||||
| Vibration | 2.92m/s² , K=1.5m/s² | Max=2.15m/s2, K:1.5 m/s2 | 0.78 m/s2, K=1.5m/s2 | 1.35 m/s2, K=1.5m/s2 | ||||||||||||||||||||||||||||||||||||||||||||||
| Maximum pressure | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Flow | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Handle vibration | F:a=2.85m/s2, R=a=2.18m/s2 | 1.76 m/s2, K=1.5m/s2 | 3.405m/s2, K=1.5 m/s2 | |||||||||||||||||||||||||||||||||||||||||||||||
| Speed | 13500 rpm | 3600 rpm | 17000rpm | 280 rpm | 3300 rpm | |||||||||||||||||||||||||||||||||||||||||||||
| Collector bag capacity | 45 L | 65L | ||||||||||||||||||||||||||||||||||||||||||||||||
| Safety switch | Yes | |||||||||||||||||||||||||||||||||||||||||||||||||
| Number of knives | 3 left, 3 right | |||||||||||||||||||||||||||||||||||||||||||||||||
| Working width | 300 mm | |||||||||||||||||||||||||||||||||||||||||||||||||
| Working depth | 200 mm | |||||||||||||||||||||||||||||||||||||||||||||||||
| Number of wheels | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Handle | Ergonomic, curved | |||||||||||||||||||||||||||||||||||||||||||||||||
| Nominal voltage | 20V (direct current) | |||||||||||||||||||||||||||||||||||||||||||||||||
| Minimum usage battery ports | 2x 20V / 4A | |||||||||||||||||||||||||||||||||||||||||||||||||
| Nominal power | 300 W | |||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum charging voltage | 22V | |||||||||||||||||||||||||||||||||||||||||||||||||
| Adapter | 210V–240V, 50Hz, input current 1A | |||||||||||||||||||||||||||||||||||||||||||||||||
| USB-A port | 2 x 5V / 2 A | |||||||||||||||||||||||||||||||||||||||||||||||||
| DC output | 12V 5A | |||||||||||||||||||||||||||||||||||||||||||||||||
| Integrated LED flashlight | 7.2W MAX | |||||||||||||||||||||||||||||||||||||||||||||||||
| Display | 3-step Battery Level LED | 3-step Battery Level LED | Digital display with battery percentage level | Digital display with battery percentage level | Multifunctional Control | |||||||||||||||||||||||||||||||||||||||||||||
| Model | RURIS Alfa Up 2200e | RURIS Alfa Up 2400e | RURIS ALFA UP 2400e X-Charge | RURIS ALFA UP 2800e X-Charge | RURIS ALFA UP 6400e | RURIS ALFA UP 6800e | Ruris 64e | RURIS 24e | RURIS 44e | RURIS Alfa UP 2424e | RURIS Alfa UP 2222e | RURIS Alfa UP 4444e | RURIS RXI3324e | RURIS RXI3744e | RURIS RXI4344e | RURIS 3024e | RURIS VOLTX 3864e | RURIS VOLTX 4264e | RURIS 3144e | RURIS 3044e | RURIS 2024e | RURIS 2524e | RURIS 2624e | RURIS 2744e | RURIS 2844e | RURIS 1424e | RURIS VOLTX 4564e | RURIS 4024e | RURIS VOLTX 6064e | RURIS 1244e | RURIS 1224e | RURIS VOLTX 1264e | RURIS 1284e | Ruris RXI4345e | Ruris RXI4645e | Ruris RXRI4645Ae | Ruris RR3845e | Ruris RT3345e | Ruris 4044e | RURIS RXI4744e | Ruris RF5345e | Ruris SF1345e | Ruris RM3045e | Ruris RM3545e | Dac 3324e | Dac 3744e | Dac 2024e | |||
| Amperage | 2Ah | 4Ah | 4Ah | 8Ah | 8Ah | 4Ah | 8Ah | 4Ah | 4Ah | 4Ah | 4Ah | |||||||||||||||||||||||||||||||||||||||
| Battery cells | 21.700 | 21.700 | 21.700 | 21.700 | ||||||||||||||||||||||||||||||||||||||||||||||
| Knife | 3 teeth | 3 teeth | ||||||||||||||||||||||||||||||||||||||||||||||||
| Engine | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, with brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, no brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | Electrical, with brushes | Electrical, with brushes | Electrical, no brushes | Electrical, no brushes | Electrical, no brushes | Electrical, with brushes | ||||||||||||||||
| Battery ports | 4 | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1+1 for storage | 2 | 1 | 1 | 2 | 4 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | ||||||||||||||||||||||
| Maximum speed | 13800 rpm | 3200 spm | 25000rpm | 21700 rpm | ||||||||||||||||||||||||||||||||||||||||||||||
| Gears | 4+ Turbo | 4+ Turbo | ||||||||||||||||||||||||||||||||||||||||||||||||
| Telescopic tube | Max 100 | |||||||||||||||||||||||||||||||||||||||||||||||||
| Battery level indicator | YES | |||||||||||||||||||||||||||||||||||||||||||||||||
| Maximum air flow | 80 m/s | 40 m/s | 72 m/s | 70 m/s | 41 m/s | |||||||||||||||||||||||||||||||||||||||||||||
| Oil tank capacity | 220 ml | 210 ml | 180 ml | 150 ml | 240 ml | 150 ml | 150 ml | |||||||||||||||||||||||||||||||||||||||||||
| Standard bar lenght | 250 mm | 300 mm | 400 mm | 300 mm | 100 mm | 450 mm | 300 mm | 350 mm | ||||||||||||||||||||||||||||||||||||||||||
| Telescopic length | 129-170 cm | |||||||||||||||||||||||||||||||||||||||||||||||||
| Emergency brake | Double | Double | Double | |||||||||||||||||||||||||||||||||||||||||||||||
| Blade lenght | 450 mm | 650 mm | 610 mm | |||||||||||||||||||||||||||||||||||||||||||||||
| Maximum cutting length | 395 mm | 285 mm | 390 mm | 600 mm | ||||||||||||||||||||||||||||||||||||||||||||||
| Chain type | 3/8 1.1 | 3/8 1.1 | 3/8 1.1 | 3/8 1.3 | ||||||||||||||||||||||||||||||||||||||||||||||
| Chain lubrication system | Automatic | Automatic | Automatic | Automatic | ||||||||||||||||||||||||||||||||||||||||||||||
| Transmission | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Chain speed | 7 m/s | 25 m/s | 6.7 m/s | 25 m/s | ||||||||||||||||||||||||||||||||||||||||||||||
| Li-ion battery voltage | 20V | 20V | 20V | 20V | 2x20V | 20V | 20V | 2x20V | 20V | 20V | 20V | 20V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 40V | 20V | 2x20V | 20V | ||||||||||||||||||||||||||
| Variable speed | Yes | Yes | Yes | |||||||||||||||||||||||||||||||||||||||||||||||
| Rotation speed | 6000 rpm | 6000 rpm | 7500 rpm | |||||||||||||||||||||||||||||||||||||||||||||||
| Front handle vibration | a=2.92m/s2, K:1.5 m/s2 | a=2.92m/s2, K:1.5 m/s2 | a=4.55m/s2, K:1.5 m/s2 | a=4.28m/s2, K:1.5 m/s2 | ||||||||||||||||||||||||||||||||||||||||||||||
| Back handle vibration | a=2.0m/s2, K:1.5 m/s2 | a=2.0m/s2, K:1.5 m/s2 | a=3.22m/s2, K:1.5 m/s2 | 3.15m/s2, K:1.5 m/s2 | ||||||||||||||||||||||||||||||||||||||||||||||
| Li-ion battery capacity | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 4 Ah | 5 Ah | 5 Ah | 5 Ah | 5 Ah | 5 Ah | 4 Ah | 4 Ah | 5 Ah | 5 Ah | 5 Ah | 5 Ah | 4 Ah | 4 Ah | 4 Ah | |||||||||||||||||||||||||
| Output voltage | 20V/1,8 A | 20V/1,8 A | 20V/2,5 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 40V/5.1 A | 20V/1,8 A | 20V/1,8 A | 20V/1,8 A | |||||||||||||||||||||||||||||||||||
| Transmission rod diameter | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Voltage | 200-240V | 200-240V | 200-240V | 200-240V | 200-240V | 200-240V | 200-240V | |||||||||||||||||||||||||||||||||||||||||||
| Total power | Pw 160Wh | Pw 240Wh | Pw 480Wh | Pw 160Wh | Pw 160Wh | |||||||||||||||||||||||||||||||||||||||||||||
| Frequency | 50-60 Hz | 50-60 Hz | 50-60 Hz | 50-60 Hz | 50-60 Hz | 50-60 Hz | ||||||||||||||||||||||||||||||||||||||||||||
| Operating temperature | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | 0-45 degrees Celsius | ||||||||||||||||||||||||||||||||||||||
| Input power | 260W | 40W | 40W | 40W | ||||||||||||||||||||||||||||||||||||||||||||||
| Output voltage | 20V | 20V | 20V | 20V | 20V | 60V | 60V | 60V | 20V | 20V | 20V | 20V | 20V | |||||||||||||||||||||||||||||||||||||
| Maximum air volume | 650 m3/h | 570 m3/h | 1200 m³/h | 1100 m3/h | 620 m3/h | |||||||||||||||||||||||||||||||||||||||||||||
| Output current | 4A | 1.8A | 2.5A | 1.8A | 1.8A | |||||||||||||||||||||||||||||||||||||||||||||
| Interchange battery | - | Manual | Auto Switch | - | Manual | |||||||||||||||||||||||||||||||||||||||||||||
| Cutting height | 25-75 mm | 25-75 mm | 25-75 mm | 25-80 mm | 25-80 mm | 25-80 mm | 25-75 mm | 25-75 mm | 25-75 mm | |||||||||||||||||||||||||||||||||||||||||
| Cutting width | 330 mm | 370 mm | 430 mm | 430 mm | 460 mm | 460 mm | 470 mm | 330 mm | 370 mm | |||||||||||||||||||||||||||||||||||||||||
| Chain tensioning system | SDS Button | SDS Button | SDS Button | SDS Button | ||||||||||||||||||||||||||||||||||||||||||||||
| Movement | Manual | Manual | Manual | Manual | Manual | Self-propulsion | Self-propulsion | Manual | Manual | |||||||||||||||||||||||||||||||||||||||||
| Functions | Collecting, throwing back, mulching | Collecting, throwing back, mulching | Collecting, throwing back, mulching | Collecting, throwing back, mulching | Collecting, throwing back and side, mulching | Collecting, throwing back and side, mulching | Collecting, throwing back and side, mulching | Collecting, throwing back, mulching | Collecting, throwing back, mulching | |||||||||||||||||||||||||||||||||||||||||
| Recommended work area | 300 sqm | 650 sqm | 650 sqm | 600 sqm | 600 sqm | 600 sqm | 750 sqm | 300 sqm | 650 sqm | |||||||||||||||||||||||||||||||||||||||||
| Chassis Housing | Plastic | Plastic | Plastic | Plastic | Metal | Metal | Metal | Plastic | Plastic | |||||||||||||||||||||||||||||||||||||||||
| Grass bag | 30 l | 35 l | 50 l | 45 l | 50 l | 50 l | 30 l | 35 l | ||||||||||||||||||||||||||||||||||||||||||
| Front wheels diameter | 5.5” (13.75cm) | 6” (15cm) | 7” (17.5cm) | 7” (17.5cm) | 8” (20cm) | 8” (20cm) | 8” (20cm) | 5.5” (13.75cm) | 6” (15cm) | |||||||||||||||||||||||||||||||||||||||||
| Back wheels diameter | 6.5” (35.75 cm) | 8” (20 cm) | 10” (25 cm) | 8” (20 cm) | 10” (25 cm) | 10” (25 cm) | 11” (27.5cm) | 6.5” (35.75 cm) | 8” (20 cm) | |||||||||||||||||||||||||||||||||||||||||
| Handles | Ergonomic–2 segments | Ergonomically-curved | Ergonomic–2 segments | Ergonomic–2 segments | Loop-Rotary | Ergonomic wrap-around handle | 5-position rotary | Ergonomic–2 segments | Loop | Rotary | Loop-Rotary | |||||||||||||||||||||||||||||||||||||||
| Wire diameter | 1.6 mm | |||||||||||||||||||||||||||||||||||||||||||||||||
| Working width | 300 mm (wire) / 255 mm (knife) | 420 mm (wire) / 350 mm (knife) | 420 mm (wire) / 350 mm (knife) | 300 mm (wire) / 255 mm (knife) | 300 mm (wire) / 255 mm (knife) | 300 mm | 30 mm | 380 mm(wire) 255 mm(knife) | 280 mm | 250 mm | ||||||||||||||||||||||||||||||||||||||||
| Turbo function | yes | yes | ||||||||||||||||||||||||||||||||||||||||||||||||
| No load usage time | 55 min | 72 min | 48 min | |||||||||||||||||||||||||||||||||||||||||||||||
| Number of cuts | 45 (ϕ200-ϕ230mm) | 60 (ϕ200-ϕ230mm) | ||||||||||||||||||||||||||||||||||||||||||||||||
| Battery and charger | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | not included | 1 battery, 1 charger | 1 battery, 1 charger | 1 battery, 1 charger | not included | not included | not included | not included | not included | not included | 1 battery, 1 charger | 2 batteries, 1 charger | not included | |||||||||||||||||||||
| Weight | 0.4 kg | 0.64 kg | 0.64 kg | 1 kg | 1.5 kg | 2.7 kg | 1.5 kg | 0.3 kg | 1.9 kg | 0.94 kg | 0.7 kg | 13.5 kg | 2.54 kg | 10.6 kg | 13 kg | 13.5 kg | 3.8 kg | 4.2 kg | 4.5 kg | 3.8 kg | 1.7 kg | 3.1 kg | 9 kg | 5 kg | 3.8 kg | 2.5 kg | 4 kg | 2.2 kg | 3.75 kg | 3.5 kg | 2.75 kg | 4.5 kg | 1.5 kg | 7.5 kg | 12.9 kg | 22.95 kg | 25.3 kg | 3.8 kg | 2.95 kg | 9.65 kg | 28 kg | 2.64 kg | 2.5 kg | 1.9 kg | 2.3 kg | 10.38 kg | 11.65kg | 2.1 kg |