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UPS Battery Life
Jul 13, 2017

First, the type of UPS batteries can be divided into lead-acid storage UPS batteries, lead-acid maintenance-free storage of UPS batteries and nickel-cadmium UPS batteries, taking into account the load conditions, the use of the environment, life and cost factors, in order to ensure reliable and stable system Safe operation, the general UPS UPS battery recommended about 5 years to replace once, UPS Battery the specific needs of the actual situation.

Second, the impact of UPS battery life of the main factors and precautions:

1, the ambient temperature of the UPS battery a greater impact:

Ambient temperature is too high, will make the UPS battery overcharge generated gas, the ambient temperature is too low, it will make the UPS battery charge, which will affect the UPS battery life. Therefore, the general requirements of the ambient temperature at 25 ℃ or so, UPS float voltage is also set by this temperature. Practical application, the storage of UPS batteries generally in the range of 5 ℃ ~ 35 ℃ charge, less than 5 ℃ or higher than 35 ℃ will greatly reduce the capacity of UPS batteries, shorten the life of UPS batteries.

2, the depth of the UPS battery life on the impact of life is also very large:

UPS battery discharge depth deeper, the less the number of its use, so in use should avoid the depth of discharge. Although UPS UPS battery has low-level protection, UPS Battery the general single-UPS battery discharge to 10.5V or so, UPS will automatically shut down. However, if the UPS is in a light-load discharge or no-load discharge, it will cause the UPS battery to discharge in depth. The so-called discharge depth refers to the user in the use of UPS battery in the process, so that the capacity of the UPS battery to release its standard capacity as a percentage.

3, UPS battery storage, transportation, installation process, due to self-discharge and lost part of the capacity:

Before installation after use, should be based on UPS battery open circuit voltage to determine the remaining capacity of UPS batteries, and then use different methods to charge the UPS battery to recharge. On the standby shelved UPS battery, every 3 months should be a supplementary charge. You can measure the UPS battery open circuit voltage to determine the UPS battery is good or bad. To 12VUPS battery, for example, UPS Battery if the open circuit voltage is higher than 12.5V, then the UPS battery energy storage and more than 80%, if the open circuit voltage is lower than 12.5V, you should immediately recharge. If the open circuit voltage is lower than 12V, then the UPS battery storage power less than 20%, UPS battery unbearable use.

4, UPS battery charge and discharge current is generally expressed in C, C's actual value and UPS battery capacity:

For example, 100AH UPS battery, C = 100A. Lead-acid maintenance-free UPS battery is the best charging current of about 0.1C, the charging current can not be greater than 0.3C. UPS Battery Charging current is too large or too small will affect the UPS battery life. Discharge current is generally required between 0.05C ~ 3C, UPS in normal use can meet this requirement, but also to prevent accidents, such as UPS battery short circuit.

5, the charging voltage:

As the UPS battery is a standby work, the electricity under normal circumstances in the state of charge, only when the power outage will discharge. To extend the life of UPS batteries, UPS charger generally use constant pressure current limit control, UPS battery is full of floating after the state, UPS Battery each section float voltage is set to 13.6V or so. If the charging voltage is too high will make the UPS battery overcharge, otherwise the UPS battery charge will be insufficient.

6, maintenance-free UPS battery due to the use of absorbent electrolyte system, in normal use will not produce any gas, but if the user is not used properly, resulting in UPS battery overcharge, it will produce gas, then UPS battery pressure will increase Large, the UPS battery on the pressure valve top open, serious will make the UPS battery burst.

7, UPS in the operation process, UPS Battery pay attention to monitor the UPS battery pack terminal voltage, float current value, the value of each UPS battery voltage, storage UPS battery and DC bus to the ground resistance and insulation status.

8, do not separately increase or decrease the UPS battery pack in a few single UPS battery load, which will cause the single UPS battery capacity imbalance and charging heterogeneity, reduce the UPS battery life.

9, UPS batteries should be installed in a clean, cool, ventilated, dry place, and to avoid being affected by sunlight, heaters or other radiant heat sources. UPS battery should stand upright, not tilt angle. Each UPS battery terminal connection should be strong.

10, regular maintenance. UPS battery after a certain period of time should be used for regular inspection, such as observation of its appearance is abnormal, measuring the UPS battery voltage is equal and so on. If the long-term power failure, UPS battery will always be in a state of charge, UPS Battery this will make the UPS battery activity worse. Therefore, even if the power failure, UPS also need to conduct a regular discharge test in order to keep the UPS battery activity. Discharge test can be carried out once in three months, the practice is the UPS with the best load of more than 50%, and then disconnect the mains, so that the UPS in the UPS battery discharge status, discharge duration, depending on the UPS battery capacity, the general discharge time The initial design time of about 30%, after the resumption of electricity from the power supply, continue to charge the UPS battery. Select UPS as much as possible with the UPS battery intelligent management functions, which can reduce the burden on managers, through the UPS software automatically implement the UPS battery charge and discharge, thereby extending the UPS battery life.