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BATTERY line – Type 90

Battery fire -
The risks and actions

Most lithium ion batteries are not designed for temperatures above 60°C. As the temperature increases lithium batteries respond with a build-up of pressure in the cell, intense discharge of flammable gases, cell fire, and even self-enhancing explosive burning of the battery (thermal runaway). These hazards are partly due to shortcomings in the manufacture and proper handling of the storage medium.



Fire compartments and fire-resistant areas

Standard storage cabinets do not protect the stored working materials from external thermal influences. In case of fire this can cause serious injury to employees and damage to property. By contrast, DÜPERTHAL Type 90 safety storage cabinets offer reliable 90-minute fire resistance in compliance with DIN EN 14470-1 and are classed as fire-resistant isolated areas (fire compartments).

Safe fire protection of 90 minutes

The BATTERY line safety storage cabinets are specially constructed for the strict requirements for safe storage and charging of lithium-ion batteries which could catch fire in the event of malfunctions. With the Type 90 classification and the explosion-like burning of the batteries in the interior tested by the independent Fraunhofer Institute, the BATTERY line offers 2-fold fire protection - sufficient time for evacuation and buffers for fire fighting.

New feature -
Backdraft protection

If fires start outside the cabinet, the automatic door closing system on safety storage cabinets is triggered. A new feature of the BATTERY line is the mechanism that automatically closes and locks the cabinet doors in the event of fires inside the cabinet. The locking system prevents opening by employees and thus protects against a possible backdraft. Only authorised experts, e.g. the fire brigade, can unlock the doors.



Storage in accordance with insurance-related requirements

Using the BATTERY line enables you to fulfil all legal provisions, especially the storage requirements of FM Global and those stipulated in the GDV’s information leaflet on lithium ion batteries, published by the VdS.

State of the art working safety

As part of a risk assessment, operators have an obligation to assess the hazards that could be caused by technical equipment and devices and to implement state of the art protective measures based on this assessment. The BATTERY line’s additional facilities to isolate hazards in the event of self-ignition of the batteries guarantee long-term process reliability and can be considered to be state of the art for the purposes of your risk assessment.

Prevention -
Practical experience

Lithium ion batteries are an established part of our day-to-day lives and are sufficiently safe technology if manufactured using good production standards and handled properly. However, due to new findings and advances in development it is essential to continuously review preventive fire and hazard protection measures as part of the risk assessment and to re-assess them where necessary.



Lithium ion batteries - hazardous goods

Although lithium ion batteries are very safe in normal operation, a risk can arise, for example if the substances they contain are released due to thermal loads. The manufacturers’ technical data sheets specify that corrosive, toxic, carcinogenic and also flammable hazardous substances can discharge. Appropriate preventive measures for early detection of damage are an important element in guaranteeing safe workplaces.

Early detection based on intelligent technology

The success of extinguishing depends significantly on the fire brigade being on site at the earliest possible stage of the fire. Therefore, for storage and use of lithium ion batteries comprehensive early detection and automatic signalling of thermal events, e.g. fires, is almost indispensable. Smart Control and temperature sensors immediately detect adverse thermal developments and initiate counter measures.

Smart Control -
The intelligent assistance system

Handling of lithium ion batteries is a risk that is very difficult to quantify in the risk assessment. In addition to fire-resistant storage, state of the art fire detection systems with automatic alarm signalling should also be seen as essential. Smart Control is an intelligent assistance system with touch display and sensors and offers crucial advantages in this area.

smart controll


Prevention and damage minimisation using Smart Control and sensors


  • Temperature monitoring for preventive early detection of thermal events in the safety storage cabinet with setting of threshold values, e.g. value 1 for early warning and value 2 for alarm.
  • Door opening status sensor to monitor whether doors are closed properly in compliance with DIN EN 14470-1.
  • Continuous monitoring (24/7) of industrial ventilation to guarantee dissipation of thermal energy produced by the charging process.
  • Error indication and data memory for logging as well as intelligent fault messages via push messages or SMS, e.g. to fire brigade and rescue control centre.
  • Digital and analog outputs as well as potential-free contacts for connection of acoustic alarms and warning lamps.
  • Intelligent system available as network solution Cabi2Net including interfaces to networks and databases via secure protocols, e.g. UPC UA or MQTT.
  • Variable display via touch display, smartphone app or web browser possible.