asecos ION-LINE: Safe solutions for active and passive storage

LITHIUM BATTERIES NOT AS HARMLESS AS THEY SEEM Safe solutions for active and passive storage Dangerous: Unattended storing and charging of batteries All-round protection: ION-LINE safety storage cabinets for your safety

Technical expertise — Lithium-ion batteries Technical expertise — Lithium-ion batteries 3 3 In order to maintain the insurance cover, managing directors or their equivalent, must provide a suitable storage and charging solution for lithium-ion batteries. They are responsible for 1. their employees and are obliged to comply with the Occupational Health and Safety Act. 2. They are also personally liable if inadequate fire protection measures are taken. This includes damage to property, possible damage to neighbouring facilities and, if necessary, the costs for large-scale evacuation measures. With the models of the asecos ION-LINE and a potential-free alarm contact you fulfil the requirements of insurers and associations. The different models provide you with a secure storage and charging solution for your batteries that can be easily integrated into your premises - no cost-intensive conversions are necessary! Take action now and do not take unnecessary risks. Our experts will be happy to help you and carry out a risk assessment for your premises. Together we will find the right solution and achieve concrete results: Maintaining your insurance cover in the event of a fire Minimising the risk of damage to property and person Frequent, sometimes weekly accidents and countless damages prove: the unattended charging and storing of batteries, for example overnight, poses great risks and dangers. People admitted to hospitals with smoke inhalation and burns. High property damages of up to 500,000 €, leading to the financial ruin of companies and other organisations. These are the sad and distressing consequences of improper storage and charging of batteries. Lithium-ion batteries pose major fire and eruption hazards. Damaged batteries can, under certain circumstances spontaneously ignite or become unstable and explode when heated. According to the ADR lithium-ion batteries are clearly classified as hazardous materials and therefore must be handled appropriately. Requirements for the storage of the hazardous materials by legislative bodies do not yet exist. The fact that numerous insurance companies and associations, including the VdS (General Association of the German Insurance Industry), have included clear guidelines in their contracts, shows the acute need for action. According to German insurers and associations, batteries of medium capacity must spatially or structurally (in a fire-resistant manner) be separated from other areas. Spatial separation by storing the defective batteries outdoors is only possible if there is a safety distance of 10 m surrounding the area. In addition, you must take the manufacturer's instructions for storage into account. Your asecos experts can be reached via +49 6051 9220-0 or by sending an e-mail to info@asecos.com 3 2

5 4 LITHIUM-ION BATTERIES – NOT AS HARMLESS AS THEY SEEM With the increasing use of lithium-ion batteries, the dangers related to storing and in particular charging these batteries increase in both commercial and private environments. Property insurers, therefore, are highly interested in ensuring available protective equipment (such as type 90 safety storage cabinets) are used to minimise risks and avoid damage claims. The recommendations of the property insurers, for example in Germany, for the use of safety cabinets are clear: “We tell customers to store batteries in hazardous goods storage cabinets.” Underwriter for a German property insurer „Areas with medium power batteries should be spatially (at least 5 m) or structurally separated from other areas with fire-resistant structures”. Publication VdS 3103 : 2019-06 (03) General Association of the German Insurance Industry published by VdS Schadenverhütung GmbH „In order to effectively protect against damages from lithium batteries, there are certainly conventional protective concepts using classical measures that have proven useful in manufacturing, handling and storing flammable materials.” Lithium batteries – fire hazards and safety risks Dr. Michael Buser, Dr. Jochen Mähliß “(…) it is generally recommended to only allow storage and handling of lithium batteries in fireresistant separate areas or if an appropriate safety distance is ensured. Based on past damages, an international standard of 90 minutes fire resistance (…) or a safety distance of at least 20 meters has proven effective here”. Lithium batteries – fire hazards and safety risks Dr. Michael Buser, Dr. Jochen Mähliß “The VdS data sheet offers very good instructions for implementation here. No insurer will block itself off or add more requirements than the VdS recommends”. German Insurance “Lithium batteries should generally be treated as a hazardous material”. Publication VdS 3103 : 2019-06 (03) General Association of the German Insurance Industry published by VdS Schadenverhütung GmbH For more incidents related to lithium-ion batteries, please visit: Technical expertise — Lithium-ion batteries Technical expertise — Lithium-ion batteries

7 6 In normal operation, using lithium batteries is considered safe. However, according to the VDE this is true only if they are handled properly. If there is a technical defect or a battery is damaged, the situation can quickly become critical. The German Insurance Association (GDV), therefore, requires that lithium batteries “generally be treated like a hazardous material”. The situation becomes especially dangerous when a lithium battery discharges its stored energy in an uncontrolled manner. Once the heat produced exceeds the melting point of the lithium, this causes an unstoppable chain reaction, the “thermal runaway”. The battery then burns up in an explosive manner. Such fires with lithium-ion batteries are difficult to manage, and the fire spreads quickly. Often, all the fire department can do is protect neighbouring areas. Technical expertise — Lithium-ion batteries MECHANICAL DAMAGE DEEP DISCHARGE THERMAL OVERLOAD ELECTRICAL OVERLOAD In combination with the high energy density of the battery Unstable cell Caused by external heat or energy sources During charging and discharging Lithium-ion batteries can cause a fire. Causes include: THE HAZARDS - THE THERMAL RUNAWAY THERMAL RUNAWAY unavoidable temperature increase to over 600 °C EXOTHERMIC REACTION SEPARATOR MELTS internal short circuit SHUT DOWN separator melts, impermeable to lithium-ions ELECTROLYTE BEGINS TO VAPORIZE MAX. PERMITTED TEMPERATURE temperature Technical expertise — Safety regulations Store and charge lithium-ion batteries in a safety storage cabinet! SAFETY REGULATIONS FOR MEDIUM POWER CLASS BATTERIES according to VdS 3103:2019-06 (03) (Publication of German insurers for loss prevention) X Compliance with manufacturer specifications (technical product data sheets) X Protection against battery pole short circuits X Protection against mechanical damages X Do not expose to high temperatures or heat sources directly or for a long period of time (this includes direct sunlight) X Compliance with structural or spatial separation (at least 2.5 m) from other flammable materials if no automatic extinguishing system is available X Immediately remove damaged or defective batteries from storage and production areas (interim storage until disposal at a safe distance or in a separate fire-protected area) X Exclusive storage of batteries with test certificate in accordance with UN 38.3 (prototypes only in exceptional cases and with risk assessment) X Storage in separate fire-resistant areas or in compliance with a safety distance (spatial separation of 5 m) X Avoidance of mixed storage with other products which are fire accelerants X Monitoring the storage area with a suitable fire alarm system wired to a constantly occupied office X If fire extinguishing systems are present: Compliance with information on suitable extinguishing agents in the technical product data sheets SAFETY REGULATIONS CONCLUSION

9 8 THE CABINETS AND THEIR FEATURES Overview of the ION-LINE Overview of the ION-LINE BATTERY CHARGE PRO BATTERY CHARGE BATTERY CHARGE LOCKER BATTERY CHARGE UB BATTERY STORE PRO BATTERY STORE Fire protection from outside (type 90) 3 3 3 3 3 3 Fire protection from inside 3 3 3 3 3 3 Store 3 3 3 3 3 3 Charge 3 3 3 3 Socket for connecting chargers 3 3 3 3 Potential-free alarm contact for alarm forwarding 3 3 3 3 3 Warning/fire suppression system 3 3 3 3 3 Locker system 3 Integrated technical ventilation 3 3 Fitted for the integration into work benches 3 ACTIVE STORAGE In active storage, lithium-ion batteries or battery packs are charged in a cabinet with a charger or partially discharged (60 - 70%). Heat is generated when a lithium-ion battery charges. If this heat output is too high, a fire may occur, for instance if the lithium battery, the charger or the connection cable is defective. Another major danger is the risk of thermal runaway of lithium-ion batteries, for instance caused by internal short circuits. CONCLUSION: The risk increases when lithium-ion batteries are left unanattended to charge outside of work hours. We recommend active storage in the asecos BATTERY CHARGE safety storage cabinets. PASSIVE STORAGE In passive storage, new or used lithium-ion batteries are stored over a certain time period. TIP: We recommend that new and used lithium-ion batteries are stored separately (different storage levels) in the BATTERY STORE or BATTERY STORE PRO safety storage cabinets. When storing lithiumion batteries, we can differentiate between passive and active storage: ION-CHARGE-90 ION-STORE-90 3incl. warning and fire suppression system 3incl. warning system

11 10 ! THE ION-LINE PRO SAFETY CONCEPT With an integrated 3-stage warning/ fire suppression system and smoke detector, the cabinets offer a high level of safety for storing and charging lithium-ion batteries. Any fires which occur inside the cabinet are detected promptly, and employees can be evacuated immediately. The warning/fire suppression system is also connected to a permanently staffed building services management, ensuring that trained rescue personnel... X can be alarmed quickly and be on site in a short amount of time. X can initiate further measures immediatelyafter completing an initial assessment of the situation. X can transport the cabinet out of the building, for instance. This prevents further major da- mage to the building, and protects against personal injury. The cabinets are equipped with a transport base to ensure fast transportation. Cabinets are automatically unplugged from mains supply during transportation. Once the cabinet is outside of the building at a safe location, rescue personnel can identify any further measures necessary. We recommend an installation at the ground level for the simplified and quick evacuation of the safety storage cabinets! INCIDENTS SYSTEM REACTIONS SUBSEQUENT MEASURES WARNING MESSAGE If the interior temperature increases above 50 °C, the warning/fire suppression system triggers a warning message to the central control office. Possible causes: • Temperature build-up due to battery charging processes • Ventilation system failure Visual and acoustic signal output • The warning light (red LED) is activated and perma- nently illuminated, the function indicator (green LED) goes out • Alarm triggers with slow tone interval The potential-free alarm switch • is activated, the alarm is transmitted to the building services management system Internal qualified personnel can immediately inspect the system to take any further necessary measures. If the interior temperature decreases below 50 °C once again, the system returns to normal operations, and the visual and acoustic signals are turned off. ALARM LEVEL 1 Alarm level 1 is triggered when smoke begins to form in the cabinet, as soon as the smoke detector is activated. Possible causes: • Smoke detected without simultaneous temperature increase Visual and acoustic signal output • The warning light (red LED) is activated and perma- nently illuminated, the function indicator (green LED) goes out • Alarm triggers with medium tone interval The potential-free alarm switch • is activated, the alarm is transmitted to the building services management system Technicians (such as from the fire department) can immediately inspect the system to take any further necessary measures. If the smoke detector does not detect any further smoke production inside the cabinet, the system can be returned to normal operations by briefly unplugging it from mains voltage. ALARM LEVEL 2 Alarm level 2 is triggered when the smoke detector is already activated (alarm level 1) and the temperature sensor registers an interior temperature greater than 70 °C Possible causes: • Outbreak of fire The visual and acoustic signals change to • warning light (red LED) switches from continuous illumination to flashing light • the alarm switches to a fast tone interval In the BATTERY CHARGE model, at the same time • the technical ventilation is also switched off • power to the outlet strip is turned off The aerosol fire suppression unit • triggers The overall system can then only be assessed by an authorised asecos service technician and reset to normal operation if possible. At least the fire suppression unit and smoke detector must be exchanged before doing so. EXPERT TIP: React quickly in case of a fire ALARM FORWARDING AS KEY COMPONENT Complementary option 1: RELAY MODULE By choosing this option, you are opting for alarm differentiation instead of a collective alarm. The factory-installed module differentiates between four different warning and alarm levels: 1. warning message at a temperature above 50° C inside the cabinet 2. alarm level 1 (see page 10) 3. alarm level 2 (see page 10) 4. power failure Via potential-free alarm contacts, these signals are passed on to a central control centre. With the clear differentiation of the alarm conditions, you can initiate optimally coordinated measures. The relay module is suited for the PRO models of the ION-LINE. Complementary option 2: MODULE FOR REMOTE SIGNALLING The module offers an alarm forwarding via the mobile phone network (SMS/call) and is therefore especially suitable for companies and facilities without a central building management system. In an emergency, the immediate alerting of one or several defined persons is triggered. The module is easily installed on-site by the customer via plug (also suitable for retrofitting) and offers the following functions: 1. five programmable telephone numbers 2. configurable message texts 3. collective alarm in case of an emergency or power failure A SIM card is required for the initial operation of the module, which must be provided by the customer. Alternatively, the included SIM card (for European and UK use only) can be activated via an online portal. A good mobile phone connection is necessary to ensure that the signal can be transmitted. The remote signalling module is suited for all models with potential-free alarm contact for forwarding alarms. The ION-LINE safety concept The ION-LINE safety concept Whenever the cabinet is unattended, especially at night or on weekends, alarm forwarding is indispensable in an emergency. It is the only way to quickly detect the damage and initiate countermeasures. Complementary option 1: Relay module (available optionally) for alarm differentiation in 4 levels Complementary option 2: Remote signal module (available optionally) for alarm forwarding via mobile network Serial equipment: Potential-free alarm contact reports a collective alarm Control centre or permanently occupied post (internal or external) max. 5 freely selectable phone numbers Manufacturer's recommendation & serial equipment: POTENTIAL-FREE ALARM CONTACT All ION-CHARGE cabinets and the BATTERY STORE PRO cabinet are equipped ex works with a potentialfree alarm contact for on-site alarm forwarding. The connection of this contact to a permanently occupied control centre (internal or external) has to be preferred as the most reliable way of alarm forwarding. Optional modules can be purchased as an alternative or extension. Alarm forwarding – These are your options:

13 12 Contact us for your individual cabinet solution Overview of all safety cabinets Overview of all safety cabinets Your asecos experts can be reached via +49 6051 9220-0 or by sending an e-mail to info@asecos.com

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