Lithium ion batteries have high requirements for chargers and require circuit protection, so lithium battery chargers usually have high control precision and can charge lithium-ion batteries with constant current and voltage.

　　There are a large number of indoor Hongji stations with wide coverage, requiring reliable power supply, so generally there are two sets of batteries for backup. The lead-acid battery in the station occupies a large area and is too heavy. When the traffic volume increases and there is a demand for expansion, the space inside the station restricts the possibility of adding new equipment.

　　If an integrated switching power supply is used in conjunction with iron batteries, it can reduce the floor area of the power supply and batteries in the computer room and meet the needs of equipment expansion. At the same time, the iron battery has excellent high-temperature resistance, which can increase the starting temperature of the air conditioning in the station to around 35 degrees, reduce energy consumption of the air conditioning, effectively reduce operating costs by saving electricity bills, and achieve the goal of energy conservation and emission reduction in three aspects: "energy conservation", "land conservation", and "material conservation".

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