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Mobile foam extinguisher S50 Bio+ - Lithium-Ion-batteries, fluorine free

Fire classes ABF - Suitable for lithium-ion-batteries - Fluorine free


The innovative design of these devices combines all the features that can be found on modern extinguishing devices of this type. Namely, maximum functional benefit, simple service and low maintenance costs. The container and chassis form two separate units. In this way, welded connections on the pressure vessel are reduced to the bare minimum and any repair work is considerably simplified. The large base frame of the chassis serves as a ram protection for the container and as a carrying aid for transport over stairs and landings.

The extinguishing agent container is made of stainless steel and offers the best possible corrosion protection and a considerably longer service life than extinguishing agent containers with an interior coating. The adjusted pressure regulation guarantees a constant jet of extinguishing agent from the beginning to the end of the extinguishing.

Fluorine free foam

The grease fire extinguishing agent Berki Cold is the first that is 100% biodegradable and free of added fluorine, PFOS and PFOA. It is not aggressive and not harmful to humans, animals or the environment. The Bio+ fire extinguishers are the alternative for environmentally conscious users.

Suitable for fires involving lithium-ion batteries

Burning battery cells reach temperatures of up to 1000 °C. Pure water would suddenly evaporate (delayed boiling) and could seriously injure people nearby. The extinguishing agent Berki Cold binds evaporating water molecules and thus effectively protects against scalding.

Suitable for cooking oil and fat fires

The foam extinguishing agent Berki Cold is ideal for extinguishing cooking oil and cooking fat fires. For this purpose, it has an approval in accordance with DIN EN 3 in portable fire extinguishers. According to DIN EN 1866, an approval for fire class F is not provided for mobile extinguishing devices and is therefore not declared on the operating screen of the fire extinguisher.


Fire class A, combustible solid materials
such as wood, car tires, textiles

Fire class B, flammable liquids
such as petrol, paint, oil

Fire class F*
Cooking oil and fat fires

Additional suitability
Lithium-ion batteries

Electrical systems
Up to 1.000 V, minimum distance 1 meter

*According to DIN EN 1866, mobile extinguishers are not approved for fire class F and are therefore not declared on the extinguisher's operating diagram.

Areas of application
Food production, bicycle workshops, e-bike charging stations, storage and processing of lithium-ion batteries

Technical data

Capacity: 50 ltr. ABF-Foam - fluorine free
Rating: A / III B
Dimensions H x W x D ca. mm: 1020 x 420 x 600
Weight ca. kg: 91
Throw range ca. m: 4-6
Discharge time ca. Sek.: 105
Operating temp. °C: 0 to +60

Optionally available with 5 or 10 metre hose line

Question about this product?


DÖKA mobile foam fire extinguisher S50 Bio+
  • Fluorine free
  • Suitable for cooking oil and cooking fat fires
  • Suitable for lithium-ion-batteries
  • Comfortable one man operation
  • Modular construction of cylinder and carriage frame
  • Stainless steel cylinder with polyester resin coating
  • Fixed pressure regulation
  • Supplied with 5 metre hose as standard, 10 metre optional
  • Bilingual operating screen German / English
  • Simple service, thus low maintenance costs