The difference of yuasa battery in computer room

Although we think the performance of UPS host in the computer room is very important, we can't ignore the choice of battery in the computer room. The most important thing is to choose the appropriate battery and UPS. So what kinds of battery do you have, and what are their advantages and disadvantages?

Battery is an important part of UPS system. Its quality is directly related to the reliability of the whole UPS system. However, battery is the shortest mean time between failures (MTBF) device in the whole UPS system. If users can use and maintain them correctly, their service life will be prolonged, otherwise, their service life will be greatly shortened.

The types of batteries can be generally divided into valve regulated sealed lead-acid batteries, gel batteries, etc. UPS requires that the selected battery must have the characteristics of high current output in a short time.

1. yuasa VRLA (valve regulated sealed lead acid battery)

Because of its small volume, good sealing performance and little maintenance, it is widely used in all kinds of UPS power supply. VRLA has two methods to prevent the electrolyte from flowing inside the battery: one is to mix the sulfuric acid electrolyte with SiO2, and then fill the battery with colloid to make gel battery (gel for short). The other is to use ultra-fine glass wool to absorb the electrolyte unsaturated, and make the liquid absorption battery or lean solution battery (AGM). Because the latter has good high current discharge performance, it is widely used in UPS system, and AGM batteries are mostly produced by domestic manufacturers.

2. Yuasa battery NPL series

Yuasa battery NPL belongs to a development category of lead-acid battery
Construction:
The battery is composed of positive plate, negative plate, separator, battery tank, battery cover, explosion-proof bolt, terminal, exhaust valve, electrolyte, etc. it is absorbed by special separator, so there is no free electrolyte in the battery.  Because the gas produced by the internal composite system is all reduced to water, which ensures the sealing of the battery, there is no need to supplement water.
appearance:
There shall be no leakage, obvious deformation, crack, stain and other phenomena, and the mark shall be clear.
charge:
Floating charging: when the ambient temperature rises, the charging voltage must be reduced to avoid overcharge
Electricity. Therefore, it is recommended to use - 3MV / ℃ / cell (reference value of 25 ℃) as the temperature
Correction compensation.
Cycle charging: when the ambient temperature rises, the charging voltage must be reduced to avoid overcharging. Therefore, it is suggested to use - 4MV / ℃ / cell (reference value of 25 ℃) as temperature correction compensation.
Note: in order to avoid excessive charging of the battery and damage of the battery due to failure, the charging mode must terminate the charging time of the battery properly.
Storage temperature and make-up interval:
Charging with 0.25ca, 2.275v/cell and constant current and voltage for 2-3 days;
Charge with 0.25ca, 2.4v/cell and constant current and voltage for 10-16 hours;
Charge at a constant current of 0.05ca for 16-20 hours.
Installation conditions:
Do not use closed containers or containers with the structure of accumulating flammable gas to contain batteries. To avoid accumulating flammable gas, please use containers with vent holes at the top and bottom.
If the battery is used in a metal container, in order to avoid the leakage of the battery due to the rupture of the tank shell, which results in the formation of leakage circuit between the container or the fixed frame and the yuasa battery, please configure the insulation sheet or the insulation box with heat resistance and acid resistance between the two, which will not be damaged due to the stress during fixation, or put the battery into the insulation bag. Please use the insulating material which will not stick grease on the surface or exude organic matters from the inside of the insulating material.
Do not contact the battery with vinyl insulating tape, insulating sheet, organic solvent, grease, etc. containing plasticizer.
When the batteries are arranged in multiple rows for use, in order to ensure good heat dissipation, please keep the spacing between the rows between 5mm and 10 mm. In addition, more than 10 mm intervals are required when using thermal control switches (TRS) or temperature sensors.