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Battery Technology

Lithium Ion

Lithium Ion technology – commonly known as Li-ion – is increasingly being considered by data centre UPS purchasers, as awareness grows of its benefits in comparison with traditional VRLA equivalents. However, before making a decision it is important also to be aware of its drawbacks.

• High cycle life
• Smaller size
• Lower weight
• High charge efficiency
• Excellent partial state of charge tolerance
• Low self-discharge rate allows for longer shelf life in storage
• Good high- and low-temperature performance
• No gas emissions

Li-ion +

• Significantly more expensive for very high performances applications
• Requires a battery management system for safe charging/discharging
• Different floating/charging voltage settings from VRLA batteries
• Unproven service life – Mean Time Before Failure of electronic components must be factored in
• Higher charging capacity required at increased cost
• Shipping restrictions due to classification as hazardous
• Immature recycling infrastructure

Li-ion –

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