are some of the main factors that must be considered . This evaluation will serve as the basis to determine if it is better to maintain the existing technology , retrofit with a new one , or even build a new building from scratch .

The size factor : Why data centre dimensions matter for battery backup

The size of the data centre facility directly influences its power requirements , dictating the space available for servers and backup systems . Servers are revenue generators for a data centre while batteries and generators ensure continuity . Striking a healthy balance is crucial . While loads will fluctuate over time , it is important to design your backup systems with 100 % load in mind to minimise any potential issues in the future .

To properly size your battery system , the actual or expected power requirements and time for depletion or discharge before generators or other backup power is required must be determined .

Another important decision factor for battery chemistry is the quality of power and frequency in which batteries will be used . Stable power will always be easier on the batteries , leading to longer life , while frequent hits ( i . e . unstable power ) will constantly drain the batteries , leading to a potentially shorter life .

From a physical perspective , space efficiency matters . Different designs impact how the batteries orient within the cabinets , racks , or containers factor into the overall footprint . Racks and connections vary

based on battery system requirements . Certain battery systems require proprietary or purpose-built cabinets . Others can be stored in open racks or cabinets .

Top terminal batteries are more commonly available , while front terminal batteries are safer and more efficient . When considering front terminal batteries , it is recommended to select batteries with ‘ true ’ front access in which there is a direct weld from the battery plates to the front access terminal of each monobloc . Other batteries that place the terminals through the top cover of the monobloc require additional connectors and brackets to deliver the same result , adding to the complexity and potential points of failure .

Choosing the right battery chemistry : Performance , longevity and future-proofing

Flooded Lead Acid , Valve Regulated Lead Acid ( VRLA ) and Lithium-ion batteries are the three most used chemistries in today ’ s data centres , each with unique advantages and trade-offs . Both flooded and VRLA batteries are based on lead acid chemistry and use the same basic principle , albeit with very different intended results .

Flooded Lead Acid has been the trusted workhorse for decades , VRLA batteries have become the industry standard in the last 20 – 30 years thanks to a smaller footprint , lower required maintenance and the ability to be housed within the same space as servers . Lower costs are offset by a shorter lifespan compared to flooded batteries , so battery replacements need to be considered as part of the total cost of ownership ( TCO ) of a backup system .

Advancements in VRLA technology , particularly with pure lead and advanced pure lead designs , have dramatically extended their lifespan , with some models offering up to 10 years of reliable service . This evolution bridges the gap with Lithium-ion batteries , which have gained traction due to their longevity and performance in high-demand applications . Yet , Advanced Pure Lead batteries offer a safer and more cost-effective alternative while still providing competitive life expectancy and performance . With the increased popularity of Lithiumion , thanks to the wider adoption of electric vehicles , lead acid technology has been put under pressure to improve its life expectancy while still maintaining its safety and recyclability . Thanks to the development of advanced pure

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