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High initial capital investment (CAPEX)
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Expensive battery, AC, and DC replacement costs
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Expensive and unpredictable repair costs
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Expensive yearly comprehensive service contract
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Slow response/support when the UPS fails
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Long delays in repairs due to lengthy shipping periods for spare parts from overseas
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Inability to shut down the UPS for proper preventive maintenance
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Oversized UPS system resulting in high maintenance costs
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Product becomes obsolete after 7 – 12 years
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Product depreciation
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Software lock down