Many people assume that UPS systems always use lead-acid batteries, but this isn't necessarily true. Lead-acid batteries are indeed very common because they are cost-effective, feature mature technology, and are relatively easy to maintain. The lead-acid batteries used in UPS systems are sealed, require no electrolyte refilling, and are maintenance-free, making them suitable for users who prefer minimal upkeep.
However, with technological advancements, lithium batteries are now also being used in UPS systems. Lithium batteries offer more advantages compared to lead-acid batteries: they can store more power in the same size, last longer during use, have a lifespan 2 to 3 times longer, and charge much faster.
For example, the ET series UPS comes equipped with a new lithium iron phosphate (LiFePO4) battery, which can withstand over 1,600 charge-discharge cycles, making it particularly durable. It features single-phase input and output, adopts double-conversion online technology, and offers high efficiency and strong reliability, providing stable AC power for equipment and ensuring peace of mind during use.
Therefore, UPS systems are not limited to just lead-acid batteries. When making a choice, there’s no need to focus solely on one type of battery—simply select the one that best suits your needs.