The UPS is protecting the connected equipment. Be sure that all battery connections are secure. . The battery connector was tight and the fuse tests good. Perhaps a cleaning of any affected surfaces with a solution of baking soda and water to neutralize the acid? Find the genuine APC Replacement Battery for your UPS. @ChrisPowell No, I didn't just buy it, we had it in use for the company and it got replaced, now when i'm trying to start it back up, i get this error. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? Lead-acid batteries usually have a ~5 - 7 year lifetime when, APC Smart-UPS X 1500VA Warning State: Connect Battery, How Intuit democratizes AI development across teams through reusability. You make me feel like I need to exit the office for a breath of fresh air. When starting the reset process, you must first disconnect any device placing a load on the UPS. APC "Battery Disconnected" May Mean Overheating. Volt meter show that batteries are ok and fully chared. Server Fault is a question and answer site for system and network administrators. Difficulties with estimation of epsilon-delta limit proof. How to notate a grace note at the start of a bar with lilypond? Schneider Electric support forum for our Data Center and Business Power UPS, UPS Accessories, Software, Services, and associated commercial products designed to share knowledge, installation, and configuration. Grer vos sites, vos produits et vos contacts au niveau des produitsDellEMC laide de la rubrique Gestion des informations de lentreprise. unplugged UPS waited for a short period of time, reconnected it, system appears to function but.. red fault light and LCD indicates a warning status. Indoor Humidity 52% (Ideal Humidity) Dew Point 50 F. Air Quality Fair. Warning: your browser configuration is not supported. Why is there a voltage on my HDMI and coaxial cables? Privacy Policy. What sort of strategies would a medieval military use against a fantasy giant? Low Battery Warning - UPS is supplying battery . This was originally posted on APC forums on 2/3/2020. The Replace Battery indicator was also flashing. What is the point of Thrower's Bandolier? Privacy Policy. Just looked at the manual for that UPS. Move the UPS to a different outlet on a different circuit. It gives me added peace of mind with automatic notifications. Buy four new batteries of the same spec and swap them out. 04:47 AM, This was originally posted on APC forums on 7/25/2016. Schneider Electric support forum for our Data Center and Business Power UPS, UPS Accessories, Software, Services, and associated commercial products designed to share knowledge, installation, and configuration. Uniflair Ceiling Mounted Split Room Cooling, NetShelter Shelving & Mounting Accessories, NetShelter Wall (Mounted) Transfer Switches, EcoStruxure Service Plan for Three-Phase UPS, Extended Warranties - Critical Power & Cooling, Advanced Network Management Card Security, The UPS will not turn on or there is no output. Unplugged the power cord to the unit and the system immediately switched to batteries. And what are the pros and cons vs cloud based. Bonus Flashback: March 3, 1969: Apollo 9 launched (Read more HERE.) Find your genuine APC replacement battery here: https://www.apc.com/shop/us/en/tools/replacement-battery-selectorTo learn more, please visit the APC by Schneider Electric FAQ:http://www.apc.com/us/en/faqs/FA156584/Click here to subscribe to Schneider Electric: https://www.youtube.com/c/schneiderelectric?sub_confirmation=1Connect with Schneider Electric:Global Website: http://spr.ly/SchneiderElectricDiscover our Services: http://spr.ly/SE-ServicesVisit our Blog: http://spr.ly/SE-BlogGain Insights: http://spr.ly/SE-insightsJob Opportunities: http://spr.ly/SE-CareersLinkedIn: https://www.linkedin.com/company/schneider-electricFacebook: https://www.facebook.com/SchneiderElectricTwitter: https://twitter.com/SchneiderElecInstagram: https://instagram.com/schneiderelectric Found this content useful? I'm excited to be here, and hope to be able to contribute. 3. There isn't a burning smell. I bet the batteries are End Of Life and they were last replaced 7 years ago. Easily find the nearest APC Reseller or Distributor in your location. For more information, please see our 20 ppm is the acceptable ceiling concentration established by OSHA. If the battery ages and is 'exhausted', the constant is overwritten. Slide out the old APC RBC6 battery pack and disconnect the black and red power cables. Your email is invalid By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This was originally posted on APC forums on 10/16/2010. Tutorial for troubleshooting the red Replace Battery LED when illuminated on SMT Series APC Smart-UPS systems. Please invite another co-worker. Was the replacement a fresh APCbrand battery? I followed the same procedure as above, but could not get the unit to recognize the battery. of Connect Battery, Checked Battery connection, appears fine, would this more likely to be a battery issue or a board interface issue? 2023-01-20 Is carpet, or another floor covering, appropriate for a server room? after being in storage. Acidity of alcohols and basicity of amines. Hi Team, Replace Battery: The battery is nearing the end of its useful life. None. APC smart UPS 1000 how to open front metal cover. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Batteries typically last 3-5 years, however . What Is the Difference Between 'Man' And 'Son of Man' in Num 23:19. Installed date for the battery's are 2011 but they have only had about 6 weeks use before being left plugged in and eventually packed away. (BTW, if you look closely at UPS packaging, you'll usually see a small label with a "recharge by" date on it so that's something to check when you get a new UPS if you're not going to install it right away.) Connect with us for help choosing the right product or with troubleshooting and installation. If your UPS does not have an LCD display, press and hold the "I/Test" button until the LED's begin to flash. "After the incident", I started to be more careful not to trip over things. Is it possible to rotate a window 90 degrees if it has the same length and width? I have vented the office & server room and shutdown the UPS. To clear this status one needs to run the self test using the Test button on front panel. Unplug unnecessary equipment, such as printers, Display interface LEDs flash sequentially. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. You would want to make sure the battery is good and that everything is firmly connected. This co-worker has already been invited to the Exchange portal. Then, perform a self-test. Get monthly updates from Schneider Electric delivered right to your inbox. Concentrations over 1000 ppm cause immediate collapse with loss of breathing, even after inhalation of a single breath. The option to replace the entire unit is yours. Connect the battery (see Connect Battery) and ensure power is available at the wall outlet. Jesus, guys. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. Four Beeps Every 30 Seconds Back-UPS is running on battery. The UPS front panel display illuminates. Max UV Index 3 Moderate. vigilem 6 yr. ago. Plugged the power in and system returned to normal. Send a co-worker an invite to the Exchange portal. Batteries also age prematurely if the Back-UPS ES is placed near excessive . This reply was originally posted by Bill on APC forums on 7/25/2016. Lumping the two questions together could confuse readers. Posted: You have entered an invalid email address. This video shows how to replace the battery in a APC Smart UPS 750. You will receive your welcome message soon. The Replace Battery indicator was also flashing. For more details, please read our You do not have permission to remove this product association. You can subscribe to this forum after you log in or create your free account. Left it for a few minutes and it started beeping again with the same condition. What does a single audible signal every 30 seconds mean coming from the APC BackUPS BE550G-GR? Create your free account or log in to subscribe to the forum - and gain access to more than 10,000+ support articles along with insights from experts and peers. Could one faulty battery cause all 4 to bloat? So, first interaction here, so if more is needed, or if I am doing something wrong, I am open to suggestions or guidance with forum ettiquette. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What is the lifespan of an typical UPS battery? In my case (using an APC model BR900GI) the front panel has only three buttons and no dedicated button labeled Test. We have a few of the bigger APC units which might have the same problem. Installing your APC unit properly ensures that your equipment is . The only difference between these two models is in their monitoring and management options. The unit has been working for several years, and this error suddenly appeared. APC Smart-UPS Owner's Manual This manual provides critical product, safety and installation information for the SCL500RM1UC and SCL500RM1UNC. 2021-06-29 Please invite another co-worker. Use a Philips head screwdriver to unscrew the top two screws and fold down the metal cover. Get monthly updates from Schneider Electric delivered right to your inbox. On Battery: The Back-UPS is supplying battery backup power to the connected equipment, it will beep four times every 30 seconds. just looking for info re error, don't particular;y want to buy new batteries and have it turn out to be the board.. at that point have to buy a new UPS anyway, This reply was originally posted by Bill on APC forums on 7/26/2016. The error message "Warning State: Connect Battery" was displaying on the screen of the control panel. Super User is a question and answer site for computer enthusiasts and power users. We have just got out 3 of them, all APC 1500 SMART UPS and they are all showing "Warning State: Connect Battery". Reddit and its partners use cookies and similar technologies to provide you with a better experience. Connect with us for help choosing the right product or with troubleshooting and installation. And schedule another battery replacement in 2022. When I turned the device on it was beeping and giving a flashy red light at the most right icon of the control panel. 3. Do new devs get fired if they can't solve a certain bug? Whats the grammar of "For those whose stories they are"? Do not attempt to use the UPS. Verify that the internal batteries are connected. Display indicated batteries needed to be replaced. What is causing this and how can I fix this issue? This co-worker has already been invited to the Exchange portal. [deleted] 6 yr. ago. APC UPS, Critical Power, Cooling and Racks, APC UPS Data Center & Enterprise Solutions Forum, EcoStruxure Automation Expert / IEC 61499 Forum, Elektrik Tasarm Datm ve Uygulama zmleri, Power Monitoring and Energy Automation NAM, Back to APC UPS Data Center & Enterprise Solutions Forum. Vous trouverez ici les tapes de connexion de la batterie. We have a mixture of APC SMART UPS that have been in storage for about 1-2 years. Enjoy! Follow on question: I read that "Over-charging a lead acid battery can produce hydrogen sulfide". rev2023.3.3.43278. Am I missing something, or do I have a problem with this unit? I have no time to actively monitor all the equipment we have. You need to hear this. ). The replacement battery is not properly connected. At that point, you may need to hire a hazmat cleanup service to remove the battery and clean up the area. I'd ponder if they shouldn't have temp probes on the battery packs and monitor the rise during charging. (Do consider that hydrogen sulfide is also toxic.). APC's forum quotes "The battery constants give the battery status via their life expectancy. Reach out to our customer care team to receive more information, technical support, assistance with complaints and more. For more details, please read our Is it possible your battery has gone bad? I have the APC SMX750i with same problem as You explained: during the day several times it shows battery disconnected and battery connected. Si londuleur APC que vous avez reu ne fonctionne pas, assurez-vous que la batterie est connecte. Posted: You can subscribe to this forum after you log in or create your free account. Obtain answers on your own by trying our digital support tools. Ensure the battery is 100% charged (8 or more hours charge time) and normal load is connected to the UPS when performing a test of the battery system. I am having the same issue with a SmartUps1500. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Enjoy! This was originally posted on APC forums on 7/25/2016. 06:47 AM 50 ppm is the acceptable maximum peak above the ceiling concentration for an 8-hour shift, with a maximum duration of 10 minutes. It has also been emitting a low beep. If the Replace Battery LED remains lit, the battery needs to be replaced. Yellow indicates a Warning state. The UPS battery is weak due to a recent outage or is near the end of its service life. Learn more about Stack Overflow the company, and our products. An APC battery backup device is designed to protect your electronic devices against power surges and failures. unplugged UPS waited for a short period of time, reconnected it, system appears to . APC next-generation Smart-UPS are cloud enabled with a built-in SmartConnect Ethernet port. What are some of the best ones? Monday-Friday between 8am 8pm EST. I am not certain of the output of the replacement battery, as I did not test it prior to installation. Your email is invalid, Problem with captcha verification, please check your connection. The battery in this device is placed in 2012. Powered back up connected equipment; UPS ran for about 5 minutes, then started beeping and displaying "Warning State: Connect Battery". Ensure the battery is 100% charged (8 or more . It might make sense to contact your local tech support while you are with the unit for further assistance. None. 1. So I got a new SMT750 with new batteries, thinking that the UPS was bad, and it was very old anyway, but now it starts doing the same thing as the old one: flashing red light, LCD says "Warning state: connect battery". If the light is very dim, check the utility voltage. Search for a solution on your own, or connect with one of our experts. It only takes a minute to sign up. Now, you will be the first to know the updates from Schneider Electric. On Line. Whats the grammar of "For those whose stories they are"? Thanks, New comments cannot be posted and votes cannot be cast. . Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? Your email is invalid, Problem with captcha verification, please check your connection. LCD panel showed battery at 85%; Self-Test ran and passed. How old is the SMTand have the batteries ever been replaced? Replaced with new "APC branded" batteries. What am I doing wrong here in the PlotLegends specification? I'd like to receive news and commercial info from Schneider Electric and its affiliates via electronic communication means such as email, and I agree to the collection of information on the opening and clicks on these emails (using invisible pixels in the images), to measure performance of our communications and improve them. If so, how close was it? have You found the solution for this problem? Monday-Friday between 8am 8pm EST. I have a system with me which has dual boot os installed. and our Sensors / Cameras / Licenses / Accessories, Article available in these languages: Spanish. Note to self: Always configure the remote management if your UPS supports it. Most of the time the issue is the battery. At higher concentrations, the smell may actually seem sweet, and your sense of smell can be deadened very quickly, making you unaware of how much exposure you're having. The UPS will return to normal operation when the power is restored and the battery has a sufficient charge. The SCL500RM1UC has the "SmartConnect" port, which allows the product to be monitored remotely. Is there a proper earth ground point in this switch box? Tutorial for troubleshooting the red Replace Battery LED when illuminated on SMT Series APC Smart-UPS systems. I have an APC Smart-UPS X 1500V which I just connected to a power source. Replace the battery as early as possible. Found this content useful? Test the input voltage with the utility voltage display. The new Advanced Plan introduces remote reboot; which enables remote power cycling of IT equipment connected to UPS outlet groups and eliminates sending someone on site for a simple reboot. Why does Mister Mxyzptlk need to have a weakness in the comics? Connect the Red Battery Wire to the + Positive battery terminal. Plug the UPS power cord into a power outlet. To continue this discussion, please ask a new question. Allow the battery to recharge for at least four hours. I am a new sys admin who hasnt really worked with ups yet so any advice would be appreciated. battery by ordering one at www.apc.com. Even though the display says the batteries are due for replacement in 2021(or that's what the UPS says), they are already dead. The instructions do not indicate anything additional required to get the unit operational. Of course the battery is not disconnected; the connection inside the unit is a very secure clip that . Cloud Cover 92%. Why did Ukraine abstain from the UNHRC vote on China? Backup unit is running on battery. APC describes it as the "Replace Battery" indicator. You should inspect for any corrosion, but the UPS is probably okay. I decided to let MS install the 22H2 build. We put a volt meter on the batterys and they are holding charge. I realized I messed up when I went to rejoin the domain Get answers you need by browsing topic-related Frequently Asked Questions (FAQ). Ask Question Asked 7 years, 8 months ago. I wanted to know if i can remote access this machine and switch between os or while rebooting the system I can select the specific os. 2021-06-28 Wind Gusts 24 mph. Why does Mister Mxyzptlk need to have a weakness in the comics? Weve made it as easy and cost effective as possible to monitor your UPS online. Anybody got any ideas on whats going on with them and how to fix them? I bet the batteries are End Of Life and they were last replaced 7 years ago. I can't give you specifics on exactly how APC units will respond with alarms, etc. If battery is connected and power is unavailable, the unit can be "cold started" . 320530 ppm leads to pulmonary edema with the possibility of death. You do not have permission to remove this product association. Learn More. Reduce the load to the UPS, disconnect nonessential equipment and reset the circuit breaker. (Applicable for 120 V units only. The unit shows very low or no input utility voltage. You will obviously want to replace the battery, but I would think some cleaning may also be in order as both hydrogen sulfide and the sulfuric acid normally present in the battery are corrosive. APCs next-generation Smart-UPS enables you to monitor your power infrastructure online, anytime - anywhere - from our secure web portal. I wouldn't vote to close as duplicate because this is a potentially dangerous condition that should be treated on its own. . Is there a single-word adjective for "having exceptionally strong moral principles"? I unplugged the PC and I replaced the battery but I have not solved the problem. Recovering from a blunder I made while emailing a professor, The difference between the phonemes /p/ and /b/ in Japanese. That means you must unplug all devices you've plugged into the UPS. Check the utility power supply to the UPS by plugging in a table lamp. The latest incident occurred at about 10pm, with no change in environment (no power drops, etc.). If you're unable to resolve an issue, contact Google Fiber customer support or APC customer support at 1-800-800-4272 for assistance. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. anything from 2 years in a budget UPS up to 5-7 years in a good quality UPS like your APC. - the incident has nothing to do with me; can I use this this way? @barbecue The symptom list from bwDraco's answer (and the osha pdf link mainly agrees) shows eye irritation and damage (. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Take a picture of it and post it. Uniflair Ceiling Mounted Split Room Cooling, NetShelter Shelving & Mounting Accessories, NetShelter Wall (Mounted) Transfer Switches, EcoStruxure Service Plan for Three-Phase UPS, Extended Warranties - Critical Power & Cooling, Advanced Network Management Card Security. The UPS will restart automatically when utility power is restored. There is very high, very low, or distorted input line voltage. Batteries require recharging after extended outages and wear out faster when put into service often or when operated at elevated temperatures. Check the utility power supply to the UPS by plugging in a table lamp. Create your free account or log in to subscribe to the forum - and gain access to more than 10,000+ support articles along with insights from experts and peers. Severity. If you receive a APC UPS which does not function, please make sure the battery is connected. Actually, one of the dangers of hydrogen sulfide gas is that the unpleasant smell only applies at lower concentrations. Simple to set up and remote access from anywhere. Self test will not run as it is saying connect battery. Using Kolmogorov complexity to measure difficulty of problems? Turn on the UPS again and connect a computer with Windows 95/98/ME, Windows NT 4.0 or Win 2000, which runs on Hyperterminal using one of the cables mentioned under the requirements. If your Fiber equipment is plugged into the Battery Backup outlets, your Fiber Jack, Network Box, and Phone Box should continue to work until battery power is depleted. Verify that the power input to the UPS has adequate upstream overcurrent protection. The UPS has shut down and the battery has discharged from an extended outage. The UPS displays a site wiring fault message. APC UPS Warning State: Connect Battery. Overload alarm lights and sound. Share it with a Colleague! Cet article a peut-tre t traduit automatiquement. Beyond that it is possible that its a hardware failure of some sort on the UPS itself. What video game is Charlie playing in Poker Face S01E07? Be sure that the power cable is securely connected to the unit and to the utility power supply. Afrikaans; ; Asturianu; Bn-lm-g; Catal; Cebuano; etina; Dansk; Deutsch; Espaol; Esperanto; Euskara; ; Franais; /Hak . Now, you will be the first to know the updates from Schneider Electric. 2023-01-20 During the last power outage, about a month ago, which lasted about 5 hours, when the battery had dropped to about 40%, and still no ETA when power would be restored, I powered down connected equipment; then turned off the UPS. Disconnected the isolator plug on the back before they were packed away. Last Modified: Learn more about the APCTM SmartConnect feature on www . APC Smart-UPS X 1500VA Warning State: Connect Battery. UPS batteries have a limited life - anything from 2 years in a budget UPS up to 5-7 years in a good quality UPS like your APC. As an additional note, H2S can be extremely dangerous at higher concentrations. All 4 batteries were deformed by heat/gas when we opened the case. Visibility 1.00 mi. The battery needs to be replaced as soon as possible. Humidity 52%. Short story taking place on a toroidal planet or moon involving flying. Contact Support. Configuring power outage shutdown via APC UPS's. Most UPSes ship with a cable disconnected from the battery that you need to reconnect before plugging it in. The official APC batteries are somewhat expensive so I used an off brand that has seemed. About 2 hours ago, the UPS started beeping again, and is again showing "Warning State: Connect Battery". This topic has been locked by an administrator and is no longer open for commenting. Sensors / Cameras / Licenses / Accessories. Step 1: Power Off And Unplug. Obtain answers on your own by trying our digital support tools. Buy APC Back-UPS Connect Lithium Ion UPS with Mobile Power Pack, USB Charging Ports for Echo and Network Routers (BGE50ML) (Not sold in Vermont) at Amazon. Load on the UPS is approximately 36%, as reported by front panel. How Intuit democratizes AI development across teams through reusability. After keeping aUPS in storage for 1-2 years,you can still recharge the UPS and its batteries but you'll likely see a significant drop off in length runtime. Why do many companies reject expired SSL certificates as bugs in bug bounties? I added a "LocalAdmin" -- but didn't set the type to admin. Once the load is disconnected, you can power the UPS off and disconnect its plug from the wall socket. After power was restored, and I powered on the UPS, after about 5 minutes I got the warning message. Cet article vous explique comment connecter la batterie. Now the display says "Connect Battery". C'mon APC, you should have way better smarts in these things to tell us end users what the issue is. 2. Modified 2 years, 6 months ago. Un nouvel onduleur APC est gnralement livr avec la batterie dconnecte. Thanks @bqDraco. Published on: 12/13/2017 Last Modified on: 9/30/2021. Another thing which is strange is that as soon as you pull the plug from it, the UPS stays running which would show that the battery's are working. Pull the battery out half way. Blue indicates an Informational state . Yes, when the unit was first installed, battery charged to 100%. 04:48 AM, This reply was originally posted by Liam on APC forums on 2/11/2020. I'm trying to determine whether I've got a bad unit, bad battery (doubtful, since it carries a load fine), or something else going on. Send a co-worker an invite to the Exchange portal. . You will receive your welcome message soon. all connected equipment not powered. Did you also just purchase it? (No power outage - just started on its own.) Maximize the lifespan of your UPS, and protect your investment, with pro-active notifications for firmware upgrade, device maintenance and warranty protection. We have a mixture of APC SMART UPS that have been in storage for about 1-2 years. The new Advanced Plan introduces remote reboot; which enables remote power cycling of IT equipment connected to UPS outlet groups and eliminates sending someone on site . Today, I could smell a sort of sulfur/sulphur/rotten egg smell when I came into the office and the UPS is alarming again. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Mutually exclusive execution using std::atomic? After LastPass's breaches, my boss is looking into trying an on-prem password manager. Wiring faults detected include missing ground, hot-neutral, polarity reversal, and overloaded neutral circuit. I have an APC Smart-UPS X 1500V which I just connected to a power source. I tried resetting the device to factory defaults. Once batteries get old the chargers don't realize they can't take the charge and start overcharging. SMART-UPS 2200 - Warning State: Connect Battery. If the light is very dim, check the utility voltage. Is there a way i can do that please help. Connect and share knowledge within a single location that is structured and easy to search. Something is burning in the server room; how can I quickly identify what it is? i have an SMT1000 unit which over the weekend developed a fault, on arrival on site this AM, all lights flashing, consistant beeps. I answered 'No', and it has been fine for the last 2 days. It's not nice being the one to go in and press the power button. 800 ppm is the lethal concentration for 50% of humans for 5 minutes exposure (LC50). Be sure that all battery connections are secure. It sounds like one of your lead-acid batteries has gone bad and is now leaking hydrogen sulfide (H2S) into the air. Welcome to the Snap! How to notate a grace note at the start of a bar with lilypond? You can determine the age of the UPS by the serial number that is on a bar code sticker on the back of the unit. When I turned the device on it was beeping and giving a flashy red light at the most right icon of the control panel. Power failure lasted several hours; connected equipment was powered down and UPS powered down when battery level reached approximately 40%. How to silence "bad battery" alarm in a APC Back-UPS 550 UPS? Replacez la batterie dans le compartiment et rinstallez le capot. Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? After power up, all was good on the UPS, and I brought connected equipment back on-line.
Shadowgate Vr The Mines Of Mythrok Walkthrough, Citadel Wellington Fund Minimum Investment, Articles A