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2 . Reliability : Reliability is one of the bottlenecks in the development of lithium-ion batteries to large-scale energy storage technologies . Generally , the reliability problems of lithiumion batteries are combustion or even explosion . The root causes of these problems are internal short circuits inside the batteries and internal thermal runaway caused by external factors such as overcharge , squeeze , puncture , and drop .
3 . Compatibility : Data centre operators who are considering to replace their existing battery string with Li-ion are concerned if their existing UPS system is compatible with Li-ion technology . They are concerned if the installed UPS system will operate property with Li-ion batteries as the charging circuit and controls for Li-ion differ from lead-acid batteries . They feel that significant hardware and embedded software upgrades may be required .
To improve the reliability of Li-ion battery , Frost & Sullivan propose the following recommendations : Select Stable Cell Materials . Among all the cell materials , LFP has highly stable molecular structure and no fire when thermal runaway . LFP decomposition does not generate O2 , which dramatically reduce the explosion risk . For example , nail test is used to verify the reliability of LFP . After a short-circuit thermal runaway occurs inside the cell , no fire and explode .
One of the primary concern for data centre operators regarding Li-ion batteries is the significantly higher initial costs . Li-ion batteries are typically 1.3 to 2 times more expensive than lead-acid batteries .
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