{"id":4143,"date":"2026-01-06T08:20:50","date_gmt":"2026-01-06T07:20:50","guid":{"rendered":"https:\/\/www.batteriedeportable.com\/guides-et-conseils\/how-to-choose-the-right-ups\/"},"modified":"2026-01-06T08:20:50","modified_gmt":"2026-01-06T07:20:50","slug":"how-to-choose-the-right-ups","status":"publish","type":"post","link":"https:\/\/www.batterylaptop.co.uk\/guides\/how-to-choose-the-right-ups\/","title":{"rendered":"How to Choose the Right UPS: Key Criteria to Know"},"content":{"rendered":"

The ASI (Alimentation Sans Interruption), or UPS (Uninterruptible Power Supply) in international terms, is a crucial piece of equipment. It ensures a continuous power supply to your IT systems (computers, monitors, peripherals, servers) in the event of a cut in the main electricity supply.<\/span><\/p>\n

This device gives you a safety window to take the necessary actions: <\/span>save your work, shut the computer down safely, or switch on a secondary power system<\/b>.<\/span><\/p>\n

A UPS generally contains one or more batteries. When the mains power fails, these batteries immediately deliver the current needed by the equipment connected to the unit.<\/span><\/p>\n

Types of uninterruptible power supplies<\/span><\/h2>\n

The market is divided into three main UPS families, each with a different operating mode:<\/span><\/p>\n

Standby (offline) UPS<\/span><\/h3>\n

This is the most basic model. Under normal conditions, it passes electricity from the mains straight through to the devices. When there is an outage, the equipment instantly switches to battery power. This changeover is very fast (a few milliseconds) and usually causes no noticeable disturbance. These UPS units are small and are ideal for home or personal use.<\/span><\/p>\n

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  • Advantages<\/span>\n
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    • Low initial cost.<\/span><\/li>\n
    • Compact design.<\/span><\/li>\n
    • Easy to use.<\/span><\/li>\n<\/ul>\n<\/li>\n
    • Disadvantages<\/span>\n
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      • The electricity supplied to the devices is not filtered from mains disturbances.<\/span><\/li>\n
      • There is a brief delay when switching from mains to battery power.<\/span><\/li>\n
      • The charging circuit can affect battery lifespan and extend charging time.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

        Line-interactive UPS<\/span><\/h3>\n

        This model is based on offline architecture, but with a technical improvement: the battery is kept on charge permanently. In the event of a power cut, converting the battery voltage into AC power is faster, which shortens the switching period. <\/span>This transition time between the two sources is therefore minimised<\/b>. The charging system is optimised, improving overall efficiency.<\/span><\/p>\n

          \n
        • Advantages<\/span>\n
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          • Competitive cost (similar to standby models).<\/span><\/li>\n
          • Shorter switchover time when the power changes source.<\/span><\/li>\n
          • Ability to regulate and filter the voltage.<\/span><\/li>\n<\/ul>\n<\/li>\n
          • Disadvantages<\/span>\n
              \n
            • Room for improvement in terms of equipment protection.<\/span><\/li>\n
            • The switchover between power sources still exists.<\/span><\/li>\n
            • Internal protection components are subject to wear and tear over time.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n