Battery preventative maintenance battery and rectifier. Ieee recommended practice for maintenance, testing, and replacement of valveregulated lead acid vrla batteries for stationary applications i e e e 3 park avenue new york, ny100165997, usa 8 february 2006 ieee power engineering society sponsored by the stationary battery committee. Sealed vrla agm batteries agm stands for absorbent glass mat. When encased in a container and fitted with terminals, it is the basic building block of a battery. Agm batteries and gel batteries are both considered acidstarved. Batteries of this kind have a safety vent to release gas in case of excessive internal pressure build up. Naturally, it is not required to measure electrolyte specific gravity or add water to the vrla cells. Vrla technology vrla stands for valve regulated lead acid, which means that the batteries are sealed.
Pdf predictive maintenance of vrla batteries in ups towards. Our experience has shown that the key factor to achieving optimum performance and long battery life is to follow a regular care and maintenance program. Predictive maintenance of vrla batteries in ups towards. Safety, storage, operating and maintenance manual vrla battery systems mseries, ddm, dds, dgx, ddv and sc publication no.
Vla, valveregulated leadacid vrla, nickelcadmium nicad, or lithiumion liion, adhering to best practices for maintenance and testing is essential for increasing mean time between failures mtbf. Specifications for 12 volt sealed maintenance free vrla battery getcoetsbatt 03104r0, dt. The failure of a single cell in a string can compromise your entire power protection system causing significant damage, as well as loss in. Like gelled electrolyte batteries, absorbed electrolyte batteries. Maintenance 12volt battery charger southlake, txmay, 2012 to trickle charge or maintain charge your 12. Safety data sheet vrla rechargeable battery portable jump starters utilizing same updated august 24, 2017 section 1. An amendment leadacid, also known as sealed or maintenancefree flooded, also called vented or open vrla batteries vrla batteries are sealed and can be mounted in any orientation. Each cell in vrla battery will have a value automating operating to allow the gas to escape if developed by the overcharging the cells and to hinder the entrance of oxygen from the air into the cell. Today pec is the most diversified global battery manufacturer worldwide, with an extensive network. It shall be ensured that the performance of the battery is not. Valve regulated leadacid rechargeable battery, maintenance free battery company. Charging techniques for vrla batteries request pdf. Gel cells add silica dust to the electrolyte, forming a thick. Pdf the reliability of data centers can be severely a ected when battery failure occurs in the uninterruptible power supply ups.
In a gel battery, the electrolyte does not flow like a normal liquid. P1188 recommended practice for maintenance, testing, and replacement of valveregulated leadacid vrla batteries for stationary applications this recommended practice is limited to maintenance, test schedules, and testing procedures that can be used to optimize the life and performance of valveregulated leadacid vrla batteries for. Introduction to vrla valveregulated leadacid or vrla, including gel and agm absorbed glass mat battery designs, can be substituted in virtually any flooded leadacid battery. Ieee recommended practice for maintenance, testing, and replacement of valveregulated lead acid vrla batteries for stationary applications i e e e 3 park avenue new york, ny100165997, usa 8 february 2006 ieee power engineering. Monitoring of vrla batteries guidelines glbat0402 mar 2007 batteries is significant because of limited volume of electrolyte which restricts heat conduction. The valve regulated lead acid vrla battery is a type of rechargeable battery.
Charging the batteries with an inverse polarity connec. Battery maintenance preventive maintenance ensure optimum electrical power system reliability and compliance with a comprehensive battery maintenance program dc system batteries need to be maintained properly. There are primarily three kinds of batteries used in. Lead acid battery maintenance and testing avo training. The oxygen recombination cycle eliminates the need to add water throughout the battery s life and improves its safety of operation.
Vrla valveregulated leadacid, also known as sealed or maintenancefree flooded, also called vented or open vrla batteries vrla batteries are sealed and can be mounted in any orientation. Understand performance differences before choosing a trickle charger vs. The term maintenance free is a misnomer however as vrla batteries still require cleaning and regular functional testing. Natural or artificial ventilation is recommended in the battery room, or area, to prevent buildup. As studies indicate, lack of maintenance is the major cause of premature battery failure. Key battery benefits gel agm premium maintenance free design yes yes air transportable yes yes most sizes many sizes. How to prolong and restore leadacid batteries battery. By isolating the batteries, we can safely test the open cell voltages and then apply a 100 amp load while checking voltage drops of. Perform a voltage check to confirm the battery polarity and marking of the terminals are accurate. Constantvoltage cv charging is a technique where a discharged battery is recharged with a voltage setting in the overcharge region and a current limit that will. Understand performance differences before choosing a trickle.
Guide to vrla batteries 1927 east penn manufacturing. Familiarize personnel with battery installation, charging and maintenance. A proper battery maintenance program that identifies system. Lead acid cells have two plates of lead hung in a fluidlike electrolyte solution of. Understand performance differences before choosing a. Measure the total voltage of battery group before connect to power. Due to their construction, the gel and agm types of vrla can be mounted in. Metalhydride, valveregulatedleadacid vrla, alkaline and zinccarbon.
Torque specifications terminal hardware torque m6 agm100150 3548 inlbs m8 agmeosagm2003000 98 inlbs charging specifications. Alpines stationary battery preventative maintenance program protects and increases the lifespan of your standby power battery systems. Okaya is the only battery manufacturer producing 100% tubular batteries for inverter and most dependable smf, solar, erickshaw batteries. There are three primary types of vrla batteries, sealed valve regulated wet cell, absorbent glass mat agm and gel cell. Our vrla battery maintenance services will help ensure that your backup batteries will deliver maximum power when you need it most. A device that transforms chemical energy into electric energy.
A vrla battery utilizes a oneway, pressurerelief valve system to achieve a. An electrochemical device, composed of positive and negative plates, separator, and electrolyte, which is capable of storing electrical energy. Our dc battery specialists will recommend the ideal maintenance frequency for your system based on your battery type, environment. The valveregulated lead acid vrla battery utilizes a dilute sulfuric acid electrolyte which is immobilized so as to eliminate the hazards of spills and leakage and which facilitates an oxygen recombination cycle. Valve regulated lead acid vrla batteries news about.
Up at cape fanshaw out of petersburg, alaska conducting spring maintenance. The shelf life of a vrla battery is the length of time a battery can stand, open circuited, before it can no longer be recovered to full capacity with a single. The most common type of battery used on ups systems and for backup of telecommunications systems. While valve regulated lead acid vrla batteries require substantially less attention than traditional wet cell batteries, they do require maintenance. Contact your battery retailer or rolls battery to determine whether the batteries require replacement.
This recommended practice is limited to maintenance, test schedules and testing procedures that can be used to optimize the life and performance of valve regulated leadacid vrla batteries for stationary applications. Please read through this users guide carefully and completely before using your battery. Direct link to panasonic battery channel on youtube. Upssvalveregulated lead acid vrla, also known as sealed or maintenancefree lithium ion batteries, and. Fist 36, battery storage maintenance and principles. These gases result from electrolysis of the water portion of the electrolyte by the charging current. In the light of this fact, the proper temperature is essential for the optimization of battery life. Vrla battery maintenance battery reliability starts with enersys as studies indicate, lack of maintenance is the major cause of premature battery failure. Gelled electrolyte gel and absorbed glass mat agm batteries. A lead acid battery is made of a number of lead acid cells wired in series in a single container. Ieee standards for stationary battery maintenance and monitoring. They are also commonly known as sealed batteries or maintenancefree batteries.
A valveregulated leadacid battery vrla battery sometimes called sealed leadacid sla or maintenance free battery, is a type of leadacid battery. This is especially true during charging and discharging. These batteries are popularly termed as maintenance free leadacid batteries. You need a way to determine when a battery is near the end of its useful life in order to replace it while it still works, before the critical load is left unprotected. Gas will escape through the safety valves only in case of overcharging or cell failure. This battery type has the following characteristics. For valve regulated lead acid batteries used in stationary applications. Flooded wet cell battery systems are likely to be on a quarterly maintenance plan per ieee485. Batteries are disconnected from power supply and stand by for one trough four hours, then connected to a dummy load and perform 10 hr capacity test at 25 5 b measure and record voltage, ambient temp. It will help you achieve optimum performance and long life from your new investment. This recommended practice is limited to maintenance, test schedules, and testing procedures that can be used to optimize the life and performance of valveregulated leadacid vrla batteries for stationary applications. In the event of a suspected leak or damage, do not accept the shipment. Trojan battery company has been manufacturing deepcycle, flooded batteries for more than three generations.
All of these effects cause a chemical change in the battery. As a battery ages it may corrode, sulfate, dryout or suffer a host of other effects based on maintenance, chemistry and usage. Valveregulated leadacid or vrla, including gel and agm absorbed glass mat battery designs, can be substituted in. The battery case is equipped with a valve that vents any buildup of gas exter.
The oxygen recombination cycle eliminates the need to add water throughout the batterys life and improves its safety of operation. After connecting the cables with battery terminals, antirust such as vaseline may be applied onto the junction points. Battery design n east penns vrla features and benefits n east penns quality assurance checks iv. Technical guidelines for operation and maintenance of vrla battery 1 1. Safety, storage, operating and maintenance manual vrla. Maintenance periodicities vla vrla monthly quarterly annually monthly quarterly biannual annually total system voltage x x charger output current, voltage x x. What is the difference between sla, vrla and agm batteries. In fact, there is no provision for these maintenance functions. By isolating the batteries, we can safely test the open cell voltages and then apply a 100 amp load while checking voltage drops of each battery.
It also provides guidance to determine when batteries should be replaced. Charging the battery under any other conditions may. The vision vrla battery has a long life in float or cyclic service. Requires no electrolyte maintenance unlike deep cycle flooded batteries that. To produce a truly maintenancefree battery, it is necessary that gases. Valve regulated lead acid vrla batteries advantages.
Often, it is also a requirement for maintaining a valid product warranty. Pdf predictive maintenance of vrla batteries in ups. Maintenance free operation during the expected float service life of vision batteries, there is no need to check the specific gravity of the electrolyte, or add water. The valve regulated spill proof construction allows. Thanks for the auther for his kindness to share such a good article. Generally, sealed vrla battery systems require annual maintenance according to ieee118. Vrla batteries are designed to be maintenance free and the hydrogen that is emitted is recombined internally so that the. For optimum reliability, it is recommended that the battery system be monitored quarterly. The normal life of the battery is expected to be 10 years. A vrla battery valveregulated leadacid battery, more commonly known as a sealed battery sla or maintenance free battery, is a type of leadacid rechargeable battery. Panasonic energy company pec began manufacturing batteries in 1931. The electrolyte has the consistency and appearance of petroleum jelly. Valve regulated leadacid batteries do produce hydrogen and oxygen during operation.
Maintenancefree operation during the expected float service life of vision batteries, there is no need to check the specific gravity of the electrolyte, or add water. During the maintenance of vrla batteries, if at all possible, the ups is left running, the batteries are isolated, and readings are then taken on the batteries. Users manual for vrla battery shenzhen center power tech co. Safety data sheet vrla rechargeable battery portable jump. Ups battery handbook the main characteristics of ups battery. Sla and vrla are different acronyms for the same battery, sealed lead acid or valve regulated lead acid. Ieee standards for stationary battery maintenance and. Due to their construction, they can be mounted in any orientation, and do not require constant maintenance. Ieee 1188 recommended practice for maintenance, testing. Niin description fy11 fy12 fy fy14 fy15 fy16 014851472 6agm vrla agm 101,153 96,025 96,932 124,155 2,222 208,248. Vrla batteries are designed to be maintenance free and the hydrogen that is emitted is recombined internally so that the electrolyte does not need replacing over the life of the battery, a valve is installed. Ieee recommended practice for maintenance, testing, and. In order to easily charge the batteries after prolonged storage, it is advised.
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