Frequently Asked Questions on Lithium-ION Batteries - Part Two

26 Jul 2024

 

Welcome to Part Two of Our Three-Part Series on Linde Lithium-Ion Battery Systems

In this segment, we'll delve deeper into the user-friendly technology of Linde lithium-ion battery systems, highlighting their numerous advantages over traditional lead-acid batteries. These benefits include faster recharging times, up to 30% greater energy efficiency, and consistent performance regardless of battery level. Continue reading for a comprehensive breakdown of this energy system and its benefits. 

FAQs

17. Is Li-ION available across all electric counterbalance trucks?

Yes, in our Performance Plus range.

18. What are the expected cycle times / life expectancy of a battery?

For 24V WH batteries (at 20°C): 75% residual capacity after 2500 full charging cycles with a 90% average Depth of Discharge (DoD).

For 48V & 90V batteries (at 20°C): 80% residual capacity after 2500 full charging cycles.

19. Is Li-ION suitable for 24/7 operation?

Yes, with sufficient charging opportunities. Li-ION batteries don’t require 'equalise' charging, so regular small charges are as effective as overnight charging.

20. What effect does temperature have on using / charging Li-ION batteries?

It depends on environmental temperature, duration of operation in the cold, truck model, and ambient charging temperature.

21. Can they be used and charged inside a cold store?

Yes, but application-dependent. Respect ambient conditions of trucks, batteries, and chargers to maintain performance. Charging is feasible with appropriate conditions. 

When charging Li-ION inside a cold store, this can be a bit more challenging but very achievable thanks to our excellent cell quality:

    • 24V Systems: Keep the charger outside the cold store (+5°C).
    • 48V/90V Systems: In some cases, the charger can be inside the cold store (down to -20°C).

22. Is it dangerous to use lithium-ion batteries?

No, they are as safe as lead-acid batteries if handled properly. They have a battery management system with comprehensive protective functions and a robust steel tray for additional protection.

Battery

  • Safety Features: Safety mechanisms are installed at the cell, module, and battery levels to prevent overpressure, overheating, overload, overcharging, and deep discharge.
  • Shock-Sensor: An integrated shock-sensor monitors the battery to detect misuse.
  • Patented Braking Resistor: This feature dissipates regenerative energy if the battery cannot absorb it, preventing uncontrolled behavior of the truck.

Battery Management and Communication

  • Continuous Communication: There is ongoing communication between the battery and the truck, ensuring full system harmonization. This allows the truck to adjust performance based on the battery's condition (e.g., internal temperature or State of Charge (SOC)). Even in the event of a failure, the system is designed to provide a controlled response, such as a controlled roll-out.
  • Display Information: SOC, remaining driving time, and error messages are shown on the forklift display.
  • Performance Settings: Individual truck performance settings can be adjusted by a service engineer:
    • SOC < 10% → Crawl speed
    • SOC < 5% → Only safety-relevant functions are active
    • SOC < 2% → The truck switches off

Battery Tray (48V/90V Battery)

  • Robust Construction: The steel tray is 25mm thick, providing effective protection for the Li-ION

23. Will using lithium-ion batteries affect my property insurance and fire protection?

Possibly. Check with your insurer for specific requirements and measures. The local fire service should also be made aware that lithium-ion batteries are in use on-site.

24. Do I need to take measures for unforeseeable incidents?

Yes. Despite the low likelihood, having an emergency plan and designated well-ventilated area for damaged batteries is recommended.

25. Are there any safety concerns while charging Li-ION batteries?

No, Li-ION batteries emit no gases or fumes during charging.

26. If a Li-ION battery catches fire, what gases are emitted and what are the toxic levels?

While unlikely that something would happen, we highly recommed reviewing the battery safety data sheets from BMZ and SAFT for specific information on chemical reactions and safety measures.

27. Are lithium-ion batteries hazardous materials?

Yes, classified as Class 9 hazardous materials under various transportation regulations.

We hope you found part two informative! For further clarification on any FAQs or to discuss upgrading to Li-ION battery technology, please contact us here. Our Li-ION specialists are ready to assist with any queries you may have.

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