12V 100AH UPS battery daily maintenance and the factors that affect its life

12V 100AH UPS battery daily maintenance and the factors that affect its life

Daily maintenance of the 12V 100AH UPS battery

1. Check the battery regularly. If you find any contamination such as dust, please clean it with water or a cloth soaked in warm water. Do not use organic solvents such as petrol, banana water or oil for cleaning, and prevent the use of chemical fibre cloths.
2. If the total voltage or the indicator value of the voltmeter on the indicator panel deviates from the reference value shown in the table below (0.05V/single cell) during the battery charging process when floating, investigate the cause and take action.

Factors affecting the life of the 12V 100AH UPS battery

Even if the UPS uses the same battery technology, battery life varies considerably from manufacturer to manufacturer, which is important to the user because of the high cost of battery replacement (approximately 30% of the UPS price). Battery failure can reduce the reliability of the system and is a very annoying thing.

1. Temperature effects
Temperature has a significant impact on the natural ageing process of batteries. Detailed experimental data shows that for every 5 degree Celsius rise in temperature, battery life decreases by 10%, so UPS’s should be designed to keep the batteries as warm as possible. All online and hybrid back-up/online UPS’s generate more heat than back-up or online interactive UPS’s (hence the need to install fans in the former) and this is a major reason why back-up or online interactive 12V 100AH UPS battery replacement cycles are relatively long.

2. Charging impact
The battery charger is a very important part of the UPS and the charging conditions of the battery have a great impact on the battery life. If the battery has been in a constant voltage or floating electrical charging state, the 12V 100AH UPS battery life can be maximised. In fact the battery life is much longer when it is charged than when it is simply stored. Because battery charging slows down the natural ageing process of the battery, the UPS should be kept charged whether it is in operation or out of service.

3, voltage impact
The battery is a single primary cell, each with a voltage of approximately 2 volts, and the primary cells are connected in series to form a higher voltage battery, a 12 volt battery consisting of 6 primary cells, a 24 volt battery consisting of 12 primary cells, etc. When the UPS battery is charged, each primary cell connected in series is charged. A slight difference in the performance of the primary batteries will result in some of them being charged at a higher voltage than others, and this part of the battery will age prematurely. As soon as the performance of one of the primary cells connected in series decreases, the performance of the whole battery will also decrease. When the UPS capacity is one, the battery voltage should be as low as possible when designing, so that the 12V 100AH UPS battery life is longer. Do not choose a battery with a large number of low voltage primary cells in series. Some manufacturers of UPS battery voltage is relatively high, this is because the capacity of a time, the higher the voltage, the smaller the current, you can choose a thinner wire and power smaller semiconductor, thus reducing the cost of UPS. Capacity of about 1KVA UPS battery voltage is generally 24 to 96V.

4, the impact of current
Ideally, in order to extend the life of the 12V 100AH UPS battery, the battery should always be kept in a floating charge or constant voltage charge state. This state of electrical state, a fully charged battery will absorb very little charger current, it is called floating or self-discharge current. Despite what battery manufacturers recommend, some UPS designs (many in-line) subject the battery to some additional small current called ripple current. Ripple current occurs when the battery is continuously supplying power to the inverter because, according to the principle of conservation of energy, the inverter must have an input of DC power in order for the AC output to occur. This creates a small charge/discharge cycle for the battery, with the charge/discharge current at twice the frequency of the UPS output (50 or 60 Hz).

A normal back-up, online interactive or back-up/ferromagnetic UPS will not have ripple currents, other designs will have ripple currents of varying size, depending on the specific design method. A simple examination of the UPS construction diagram will give you an idea of whether the UPS will experience ripple currents.

If the battery of an on-line UPS is between the charger and the inverter, then the battery will have ripple current, which is common with double conversion UPS’s. If the battery is isolated from the inverter by a cut-off diode, relay, converter or rectifier, then the battery will not have ripple current. Of course a UPS of this design is not always online all the time, so this type of UPS is called a hybrid back-up/online UPS.

12V 100AH UPS battery installation and storage precautions

12V 100AH UPS battery installation and storage precautions

Installation of the 12V 100AH UPS battery

When installing the 12V 100AH UPS battery, please observe the following:

1.1 Do not install the battery in an enclosed space or near a fire as there is a risk of explosion and fire.
1.2 Do not cover the battery with a vinyl film or something that may cause static electricity, as this can sometimes cause an explosion.
1.3 Do not install the battery in a place where water may enter, as there is a risk of electric shock and fire.
1.4 Do not install the battery in an environment exceeding -40C~60C.
1.5 Do not use the battery in places where there is dust, otherwise there is a risk of short-circuiting the battery.
1.6 When using the battery in the box, pay attention to the air circulation.
1.7 Do not have sticky or sticker-like objects pressing on the top cover, as the gas appearing in the battery will not be able to escape due to the exhaust valve under the top cover.
1.8 Number of parallel connections – When floating charging, plug-in terminal batteries can only be associated with a maximum of three rows, bolt-on terminals are not specifically limited, but the number of parallel connections is small reliability added. In addition, when connecting wires in parallel, it is necessary to consider making the wiring conductors and contact resistance equal between the rows, and in order to keep each row of charging and discharging cells in balance, please do not use more than three rows in practice.
1.9 When using batteries of different capacities, different ages and different manufacturers at the same time, it is possible that the battery and the machine may be damaged due to the different values of their characteristics.

Storage of the 12V 100AH UPS battery

1. When storing the battery, please ensure that the temperature does not exceed -20°C to +40°C.
2. The battery must be stored in a fully charged state. Please replenish the battery when in use as it will lose some of its capacity due to self-discharge in transit or during the storage period.
3. When storing for a long period of time, replenish the battery to compensate for self-discharge during storage. If stored at over 40C, it will have a bad effect on the life of the battery, so please prevent it!
4. Store in a dry, cold and well-ventilated place. 5. If the battery packaging is inadvertently wetted with water during storage or transfer, remove the packaging carton immediately to prevent the water-wetted carton from becoming a conductor and causing battery discharge or burning the positive terminal.

12V 100AH UPS battery life is how long how to use the correct maintenance UPS uninterruptible power supply

12V 100AH UPS battery life is how long how to use the correct maintenance UPS uninterruptible power supply

What is the life span of a 12V 100AH UPS battery?

The life expectancy of a 12V 100AH UPS battery depends on the operating environment, maintenance and care, and the company’s attitude towards the old 12V 100AH UPS battery. The maintenance-free batteries used in 12V 100AH UPS batteries generally have a lifespan of 3 to 5 years. The normal life span of a UPS battery is still relatively long, so if you use it reasonably and regularly once a month, it can last 5-8 years, after which the capacity will drop significantly and you will need to consider replacing the 12V 100AH UPS battery.

How to properly use and maintain the 12V 100AH UPS battery uninterruptible power supply

Environmental requirements for the use of the 12V 100AH UPS battery

1. The UPS must be placed in a stable position, and all sides of the case must be kept a sufficient distance from the walls for ventilation.
2, UPS uninterruptible power supply should be away from heat sources, to prevent direct sunlight, to maintain normal temperature and humidity, to keep the room clean, to prevent corrosion.
3, prohibit the use of overload, in order to prolong the life of the UPS, uninterruptible power supply should not be in long-term operation under full load. Backup UPS is generally selected from 60% to 70% of the rated power of the load, online UPS is generally selected from 70% to 80% of the rated power of the load.
4, lightning is the natural enemy of all electrical appliances, attention must be paid to ensure that the UPS effective shielding and grounding protection, UPS uninterruptible power supply using a large number of CMOS integrated circuit modules and control of the CPU and other microelectronic devices, they are very sensitive to lightning electromagnetic pulse, so it is easy to be broken. Even if the UPS has effective shielding and good grounding protection, it is important to protect the power and communication lines from lightning overvoltage.

12V 100AH UPS battery maintenance precautions

1. It is forbidden to connect inductive loads to the UPS output port. When using the UPS power supply, it is important to comply with the relevant provisions of the product manual or instruction manual to ensure that the connected fire, zero and earth wires meet the requirements and that the user does not change their mutual order at will.
2. Strictly follow the correct sequence of power on and power off. Avoid sudden loading or sudden load shedding due to the load, the UPS power supply voltage output fluctuates greatly, and the UPS power supply can not work properly.
3. Frequent switching off and on of the UPS power supply is strictly prohibited. General requirements after the UPS power off, wait at least 6 seconds before turning on the UPS power supply, otherwise, the UPS power supply may enter the “start failure” state, that is, the UPS power supply into neither the utility output, and no inverter output state.
4, the general UPS battery discharge protection measures, but the discharge to protect the shutdown, the battery can be restored to a certain voltage, but this does not allow the reboot, otherwise the battery will cause over-discharge, the UPS must be re-charged before it can be put into normal use.
5, the newly purchased UPS (or UPS stored for a period of time), the battery must be charged before it can be put into normal use, otherwise there is no guarantee of standby time.
6, For UPS without long-term power failure, the UPS should be discharged every 3 to 6 months and then re-charged so as to prolong the life of the battery, otherwise the UPS host and battery may be damaged.
7, regular maintenance work on the UPS power supply, remove the dust in the machine, measure the voltage of the battery pack, check the operation of the fan and test and adjust the UPS system parameters, etc.

12V 100AH UPS battery installation and storage precautions

Commonly used 12V 100AH UPS battery classification and introduction

The characteristics of different kinds of 12V 100AH UPS battery description

There are three types of 12V 100AH UPS battery commonly used in UPS power supply applications: open type liquid lead-acid batteries, maintenance-free batteries, nickel-chromium batteries, factors affecting battery life, different types of 12V 100AH UPS battery also have their own advantages and disadvantages. Now UPS power supply manufacturers with the battery is generally maintenance-free batteries, the following to avoid maintenance battery-based introduction to the characteristics of the three batteries.

1、Open type liquid lead-acid batteries

Such batteries can be divided into 8-10 years, 15-20 years of life according to the structure of two. As this battery sulphuric acid electrolysis will produce corrosive gases, such batteries must be installed in a ventilated and away from the room of sophisticated electronic equipment, and the battery room should be paved with anti-corrosion tiles.

Due to evaporation, open cells require regular specific gravity measurements and acid and water additions. These batteries can withstand high temperatures, high pressures and deep discharges. The battery room should be non-smoking and have open battery racks.

The battery cannot be transported after charging and must therefore be charged on site after installation. The initial charge usually takes 55-90 hours. The normal voltage per cell is 2V and the initial charging voltage is 2.6-2.7V.

2、Nickel-chromium battery

These batteries are different from lead-acid batteries in that hydrogen and oxygen are produced during electrolysis without producing corrosive gases, and can therefore be installed next to electronic equipment. And water consumption is minimal and maintenance is generally not required. The normal life expectancy is 20-25 years. Far more expensive than the previously mentioned batteries. The initial installation costs are approximately three times as much as for lead-acid batteries. Does not affect battery life due to high ambient temperatures, nor does it affect battery capacity due to low ambient temperatures. Generally 1.2V per cell, UPS need to design a higher charger voltage due to the application of such batteries.

3、Maintenance-free battery

Also known as valve-regulated sealed lead-acid batteries, maintenance-free batteries due to their own structural advantages, electrolyte consumption is very small, in the service life of the basic do not need to replenish distilled water. It also has the characteristics of shock resistance, high temperature resistance, small size and low self-discharge. The service life is generally twice as long as that of an ordinary battery. There are also two types of maintenance-free batteries on the market: the first is a one-time electrolyte added at the time of purchase and does not require maintenance in use (adding supplementary liquid); the other is a battery that has been sealed with electrolyte when it leaves the factory and the user cannot add supplementary liquid at all.

As the maintenance-free battery adopts lead-calcium alloy grid, the amount of water decomposition produced during charging is small, and the evaporation of water is low, coupled with the sealed structure of the shell, the sulphuric acid gas released is also small, so it has the advantages of not adding any liquid, less corrosion on the junction head and wires, strong resistance to overcharging, high starting current and long power storage time compared with traditional batteries.

The maintenance-free battery only produces a small amount of gas from the electrolyte under normal charging voltage, and the pole plate has strong resistance to overcharging, and has small internal resistance, good starting performance at low temperature, and longer service life than conventional batteries. However, the specific gravity of the electrolyte should be checked during maintenance.

Most maintenance free batteries have a hole-shaped liquid (temperature compensated) hydrometer on the cover, which changes colour according to the specific gravity of the electrolyte. This indicates the storage status of the battery and the height of the electrolyte level. When the indicator eye of the specific gravity meter is green, it indicates that the charge is sufficient and the battery is normal; when the indicator eye has few green dots or is black, it indicates that the battery needs to be charged; when the indicator eye shows light yellow, it indicates that there is a fault inside the battery and it needs to be repaired or replaced.

12V 100AH UPS battery daily maintenance and the factors that affect its life

What is the 12V 100AH UPS battery?

What is a 12V 100AH UPS battery?

A UPS is called an uninterruptible power supply because in the event of a power failure it can be quickly converted to an inverter state so that important files are not lost when the computer is in use because of a sudden power failure and there is no time to store them. It is not intended to be used as a back-up power supply. If you just want to be able to use the power when the power goes out, an inverter is sufficient. Most of the batteries used in home UPS are maintenance-free lead-acid batteries.
The reason why an UpS (Uninterruptible Power Supply) can continue to supply power to computers and other equipment after a power failure is that it has a device inside that stores electrical energy, this storage device is the 12V 100AH UPS battery.

Main functions of the 12V 100AH UPS battery

1、When the mains power is normal, the electrical energy is converted into chemical energy and stored inside the battery.
2. When the mains power fails, the chemical energy is converted into electrical energy and supplied to the inverter or load.

The reliability of a 12V 100AH UPS battery is directly related to the reliability of the entire UpS system, yet the battery has the shortest mean time between failures (MTBF) of the entire UpS system. If the user is able to use and maintain the battery correctly, its service life can be prolonged, otherwise its service life will be significantly shortened, the battery type is generally divided into force lead-acid batteries, lead-acid maintenance-free batteries and nickel-cadmium batteries.

Taking into account the load conditions, usage environment, service life and cost, lead-acid maintenance-free batteries are generally chosen. Users should not choose inferior batteries for the sake of cheapness, as this will affect the reliability of the whole system and may result in greater losses.

12V 100AH UPS battery about charging

1. For float charging, please use a charging voltage of 2.275V/single cell (set value at 20C) for constant voltage charging or 0.002CA or less for constant current charging. When the temperature is below 0C or above 40C, it is necessary to correct the charging voltage by -3mv for each degree change in voltage per cell, starting at 20C. 2. For cyclic charging, charge at a constant voltage voltage with a charging voltage of 2.40-2.50V/single cell (set value at 20C). When charging at temperatures below 5C or above 35C, the charging voltage is adjusted by -4mv/single cell for each degree of change, starting at 20C.

The initial charge current is controlled at 0.25 CA or less. The charge volume is set at 100-120% of the discharge volume, except when the ambient temperature is below 5C, where it is set at 120-130%. The lower the temperature (below 5C) the longer it takes for charging to finish and the higher the temperature (above 35C) the more likely overcharging is to occur, so it is better to charge within 5C~30C especially when cycling. To prevent overcharging try to install a charging timer or automatically convert to trickle charging. The battery temperature should be kept within the range of -15C to +40C when charging.

The 12V 100AH UPS battery is to be discharged

Please keep the battery temperature within the range of -15C to +50C when discharging. Please keep the continuous discharge current below 3CA (H below 6CA). The discharge termination voltage varies according to the current, as described below. Be careful not to discharge at a voltage lower than the following. After discharging, recharge quickly. If you accidentally over discharge, recharge immediately.