What factors affect battery life?

The following factors affect battery life: installation, temperature, charging and discharging current, charging voltage, depth of discharge, and long-term charging. 1---Battery installation The battery should be installed in a clean, cool, ventilated and dry place as much as possible, and protected from the influence of sunlight, heaters or other radiant heat sources. The battery should be placed upright and not inclined at an angle. The terminal connection between each battery should be firm. When connecting, batteries of different capacity, different performance, different new and old, and different manufacturers should not be connected together. When connecting the battery, insulating tools should be used to prevent accidental short-circuit of the positive and negative poles and burn the battery. When the battery is connected to the charger or load, the circuit switch must be in the off position, the positive electrode of the battery should be connected to the positive electrode of the charger or load, and the negative electrode of the battery should be connected to the negative electrode of the charger or load. Nuts, bolts, washers and connecting wires used for connection should be moderately and evenly tightened. Beware of loosening and over-tightening of screws. 2---Environmental temperature The ambient temperature has a greater impact on the battery. Too high ambient temperature will cause gas to appear in the battery overcharging. Too low ambient temperature will cause the battery to be undercharged, which will affect the battery's service life. Therefore, the ambient temperature is generally required to be around 25°C. 3---Charging and charging are divided into initial charging, normal charging, and equalizing charging. Initial charge: The first charge of a new battery is called initial charge. The purpose is to reduce the active material of the electrode plate oxidized during the assembly process, increase the content of active material, and improve the discharge performance of the battery. Normal charging: Charging a battery that has been discharged is called normal charging. Floating charge: The battery pack is connected to the load in parallel with the power supply. When the AC power supply is normal, the rectifier rectifies the AC power to DC power, while charging the battery, and converting the DC power to AC power through the inverter to supply power to the load. When the AC power supply is interrupted, the DC power of the storage battery is immediately converted to AC power through the inverter to supply power to the load to ensure the continuity of power supply. This type of battery charging is called floating charging. Balanced charging: In the process of battery use, there will often be unbalanced phenomena such as specific gravity, capacity, and voltage. As a result, the output voltage of the battery pack is too low and the output power is too small. For this reason, the battery pack is overcharged so that each single cell in the battery pack is in a fully charged state. This charging process is called equalization charging. No matter what kind of charging method is used, you should pay attention to controlling the charging voltage and current in accordance with the manufacturer's product instructions to prevent overvoltage and overcurrent charging from causing degradation of battery performance and shortening or damage to the battery. In the power system, the battery is always on-line standby, so that the battery is basically in a long-term floating charge state. The selection of the floating charge voltage plays a crucial role in the long-term and reliable operation of the battery. A high float charge voltage will cause the battery to lose water slowly and cause thermal runaway and cause the battery to fail; a low float charge voltage will cause the battery to remain in an undercharged state for a long time, causing the battery to sulphate and cause the battery to fail. The correct float voltage should generally be selected at 2.23V/cell, and should be adjusted accordingly with the battery operating temperature. Due to different battery manufacturers, this parameter will have some differences, and should be selected strictly according to the parameters supplied by the manufacturer. In a battery pack, the batteries are always charged in series. Due to the individual differences of the batteries, the terminal voltage of each battery will not be strictly the same. In order to ensure the long-term safe operation of each battery in the battery pack, it is necessary to ensure that each battery in the battery pack The voltage of the floating charge terminal of the battery is in the correct range, and equalizing charging is a common method to ensure that the backward batteries in the battery pack are fully charged through proper overcharging. Due to the overcharge of the battery pack, this method should be restricted in use. A single battery should be used for supplementary charging instead of equalizing charging. If equalizing charging is required for the battery pack, the equalizing charging voltage must be strictly controlled. The voltage of equalization charging should be selected strictly in accordance with the regulations of the battery processing factory. 4---Discharge discharge current should not be too large, but beware of short circuit discharge. Generally discharge according to C10C20 ampere-hours. In detail, for a 50AH battery, use C10 (5 ampere current) for discharge. By the end of 10 hours, it can achieve the purpose of fully activating the battery. At the same time, it can test the capacity of this battery. Not enough (some battery manufacturers require the use of C20 method of discharge, the corresponding discharge time is doubled). When discharging, the battery terminal voltage should not be lower than the termination voltage to prevent the battery from being over-discharged and causing the battery's performance and life to be shortened. After discharging, it should be charged in time. The battery is not allowed to be stored for a long time in the discharged state. 5---Discharge depth The depth of discharge has a great impact on the battery life. The deeper the battery discharge depth, the fewer the number of cycles it uses. Therefore, you should beware of deep discharge when using it. 6---Regular maintenance The battery should be checked regularly after using the one-click time, such as observing whether its appearance is abnormal, measuring whether the voltage of each battery is uniform, etc.; if there is no power failure for a long time, the battery will always be in a charged state. The activity of the battery deteriorates, so even if the power is not cut off, the UPS must periodically conduct a discharge test to keep the battery active. If conditions permit, the discharge test can generally be carried out every three to six months. The practice is to load the UPS-preferably above 50%, and then disconnect the mains power to make the UPS in the battery discharge state. The discharge duration depends on the battery capacity. Generally, it takes several minutes to several tens of minutes. After the discharge, the mains power supply is restored and the battery is continuously charged. 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