UPS battery selection and maintenance

Engineering staff usually cheaper small-capacity battery to achieve the many groups of parallel UPS require larger battery capacity, if the poor performance of homogeneous groups of batteries in parallel, the performance of poor, low-voltage battery pack would be best battery performance Group collapse, causing the entire UPS battery system failure in advance. At present, primarily on the basis of homogeneity properties of the battery voltage to measure the homogeneity, has a variety of domestic standards, such as the Ministry of Information Industry, YD / T 799 - 1996 standard requirements for: 25 ℃, when the entire group 2V battery cell float voltage difference is not more than ± 50mV, the open circuit voltage difference of not more than ± 20mV; the Ministry of Electric Power DL/T637--1997 standard requirements are: 25 ℃, the battery system such as 2V / Festival batteries, the highest open-circuit voltage with a minimum of a difference was not more than 30mV, 6V / batteries no more than 40mV, 12V / batteries no more than 60mV. General the number of batteries in parallel group should not be more than four groups, in order to prevent the entire battery system failure in advance, the choice of batteries should be uniformity in the performance aspects of the request. When they are confident that after the battery model, in a UPS system manufacturers with the best requirements of the same batches of battery products, to reduce the performance differences. Similarly, different brands or different battery, because there is a big difference in performance, it is recommended not to mix.

Finally, it is necessary to point out in particular that even if the selection of appropriate VRLA, are also required to carry out the necessary day-to-day maintenance and management, to avoid premature battery failure. UPS acer laptop battery Maintenance With the continuous development of science and technology, UPS performance getting better and better MTBF getting longer and longer working hours, increasing the reliability of machine.

UPS acer btp-43d1 do a good job in the maintenance of consumables has become particularly important.

The beginning of a new rechargeable battery The new travelmate 220 battery is installed after the general to carry out a longer period of time rechargeable battery, charging power supply in accordance with the instructions of the provisions of charging, the battery pack to be recharged after a discharge, discharge after charging, the purpose is to extend battery life activity and improve the battery charge-discharge characteristics.

Periodic charge-discharge UPS's internal acer btp-58a1 power long-term idle or do not have batteries in the long-term floating state without discharge, would result in a large number of batteries to the battery lead sulfate adsorption of the cathode surface, forming the so-called battery cathode plate "sulfate" and because of lead sulphate is an insulator, and its formation is bound to have a battery charge and discharge very bad because, on the formation of sulfate cathode board the more the greater the internal resistance of batteries, battery charge-discharge performance can be more poor, resulting in the battery of "aging", "activity" down, so that greatly shorten battery life. Should be once every 3 ~ 4 months, man-made through the interruption of electricity or by the city of software / hardware control methods will be UPS's rectifier / charger placed closed to allow discharge of batteries in UPS. Such as "activate" the battery and the battery discharge operation, it is to control the discharge time in the normal discharge time of 1 / 3 ~ 1 / 4 better.

Depth of discharge is prohibited Sealed maintenance-free battery and battery life is closely related to depth of discharge. Depth of discharge refers to the user in the process of using ace btp-63d1, battery out of an number of hours accounted for its nominal capacity when the percentage of security. Depth of discharge will cause the internal battery electrode surface sulfate, resulting in increased internal resistance of batteries, serious individual cells will appear "anti-pole" phenomenon and permanent damage to the battery.

Battery depth of discharge serious impact on battery life, non-compelling, do not let the battery discharge state in depth. Avoid over-current charge Easy to over-current caused by charging the internal acer batcl50l of positive and negative plate bending, so that the surface of electrode active material shedding, resulting in decreased battery capacity available, the battery can cause serious internal damage to short-circuit plate.

Avoid over-voltage battery charger Over-voltage rechargeable travelmate 290 battery tend to cause electrolyte to be contained in the electrolytic separation of water into hydrogen and oxygen and escape, thus shortening battery life.

Replacement activity, the battery internal resistance is too large (1), with UPS power to extend the use of time, there will always be part of the charge-discharge characteristics of batteries will gradually deteriorate, terminal voltage decreased, the performance of the travelmate 4000 battery can no longer rely on UPS power supply to the internal charging circuit resolved, continue to use will be hidden dangers exist, should be promptly replaced.

(2), the battery internal resistance increases, with the normal charge voltage of the rechargeable travelmate 2300 battery have not recharged the battery to restore its properties should be the timely replacement of batteries. Battery internal resistance is normally 10 ~ 30mΩ, such as more than 200mΩ internal resistance of batteries, the UPS will not be enough to maintain the normal operation of the internal resistance of large batteries must be replaced.

To avoid the old and new batteries or mix old and new aspire 1680 battery mixed charge New battery because of the resistance are relatively small, and old batteries have varying degrees of resistance increases, when mixed with old and new batteries recharge when the battery internal resistance because of the old large, pressure will be relatively large, readily phenomenon caused by over-voltage charging; and new batteries, the internal resistance of the small charge voltage currents too small but also easily lead to over-current phenomenon, so in the charge-discharge process should be avoided mix old and new aspire 1410 battery.

Battery use of environmental Battery life with the ambient temperature is closely related to the battery at a low temperature, the battery in the powder of zinc plate easily, loss of storage performance, resulting in permanent damage. Temperature is too high, the battery capacity will decline, would cause serious permanent damage. According to the battery manufacturer's technical specifications, the best use of the battery temperature is 20 ~ 25 ℃, in the temperature range used to extend acer lcbtp03003 ,acer aspire 1300 life.