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Modern colocation providers have a lot on their plates. They need to construct their data centres within budget, ensure that it operates reliably, and make sure that everything runs smoothly for years with consistent operational costs and no outages. A vital aspect of every data centre is undoubtedly cost. Whether the capital expense of installing banks of uninterruptible power supply (UPS) to protect against power outages or the price of electricity from the grid, various costs weigh heavily on the profitability of operators. We look at two factors that can help lower expenses below. Lithium-ion batteries Lithium-ion is one technology that is fast emerging in popularity. The reason is simple: Modern lithium-ion batteries are becoming more cost-effective than ever, with benefits over traditional valve-regulated lead-acid (VRLA) batteries that are becoming more marked over time. Though lithium-ion rechargeable batteries cost more than traditional VRLA units, they have a higher life expectancy, weigh less, and are more robust across a range of temperatures.