Ups battery explosion causes

How batteries can explode – and how to avoid it

So that means they must be completely safe, right? Battery technology has been pushed over the years, but no incredible breakthroughs have come along. A defective or improperly-handled battery can overheat, causing the cells to break open and result in a chain reaction of other cells rupturing.

The defect can be a simple short circuit, or a design defect that improperly insulates individual cells from the heat of neighbors. Lithium is used in batteries as an anode because it has extremely high electrochemical potential. That is, lithium-ion moving to the electrode produces a lot of energy. While lithium is great for making high-capacity batteries, these same properties make it highly reactive and more prone to thermal runaway.

Lithium is an Alkali Metal along with sodium, potassium, and the rest of the first group of the periodic table. Not only are these elements highly flammable, but they are so reactive that tossing a few grams into water will cause an explosion. So when a Li-ion battery does heat up, the lithium in it can accelerate the breakdown of other cells.

There is always the possibility that the occasional battery is going to have a manufacturing defect, or that it will be damaged, leading to a failure. However, some folks are starting to chime in on the situation with the Boeing The plane has been grounded after two battery fires in recent weeks. Boeing says the design is sound, but maybe there is something more serious going on. Elon Muskthe man behind SpaceX and Tesla Motors, is talking about the differences between his Li-ion car batteries and the ones used in the Whereas the Tesla battery has thousands of small cells insulated from each other to prevent thermal runaway, the has batteries with eight large cells.

Inverter Battery Blast, People injury from inverter battery explosion - causes batteries to explode?

Because these cells get warmer, they are more likely to rupture and release a lot of energy when they do. Now that Musk has broken the ice, others have agreed, including an engineering professor at MIT.

So what can we take away from all this? Batteries are still very hard to engineer. Even Boeing might have made some mistakes, and it has more engineers than you can shake a slide rule at.

Tmkoc sex stories part 46 in hindi

There has to be damage or a serious manufacturing defect to turn your phone into a bomb. Just relax, and maybe check back on this situation before your next flight.

Geek Pick. By Ryan Whitwam This site may earn affiliate commissions from the links on this page. Terms of use. Speak Your Mind.The place closes at 9pm. On my way home from running errands, at 8pm I got a call from a staff member reporting that they smelled smoke. I walked her through pushing the off button rudely shutting down the server.

I was there in twenty minutes and the UPS was almost too hot to touch. If the unit had waited another two hours to start his failure Once had a computer placed on my desk by a member of the maintenance staff on a Saturday morning. Had an interesting note -- "This computer violated our no-smoking policy" By the time I got the new batteries, the old batteries had swelled up inside the UPS so badly that I could not get them out.

We had a UPS go into meltdown a few months ago. First off, we couldn't figure out what it was The smell got worse and worse until we knew something was very wrong.

Naiboi 2 in 1

Realized the unit was extremely hot, after which I pulled it and shut it down. The batteries had swelled so much they couldn't be removed. Unit's pretty much a brick right now. Come to think of it, maybe I should have let that happen and we'd have gotten our current system sooner.

Well, there is this idea - anything you don't handle, comes back and bites. Applies to just about anything. The best way to handle anything is do it now. I had two mice go up in smoke after plugging them into an emac.

Subscribe to RSS

Guess they wanted PC or death. That would be my dream!

Utah trikes differential

Matter of fact, it would give me a good impression of the guy, pointing to the fact that he is "sensitive". I don't know why, but when I read the subject line, I was thinking UPS, the trucking company, and had some weird images in my head of one of their trucks overheating, etc I've had swollen batteries even before the light turned on so it may not be that you waited too long.

Our rack mount units are all APC and I've had swollen batteries in probably six of them, some more than once. Plesim is an IT service provider.If you ever hear an automotive battery explode, you will gain a newfound respect for the raw power packed into these heavy lead-acid devices under your hood. The risk of explosion is labeled on every automotive battery, though few motorists bother to read such warnings, let alone take them seriously.

Indeed, a study by the National Highway Traffic Safety Administration found that battery explosions in alone injured 2, people severely enough to have required hospital treatment. In all, the study found 7, injuries were related to automotive batteries. It helps to know a little bit about volt lead-acid batteries.

Basys 3 clock divider

They have six two-volt chambers, called cells, that contain a grid of lead plates submerged in sulfuric acid. Electricity is generated when the acid reacts with the lead plates and water. One byproduct of the process is gaseous hydrogen, an element so highly flammable that it is used to power rocket engines. Charging a battery also generates hydrogen. And because heat drives up hydrogen output, you can expect more trouble generally in hot weather. The danger is that hydrogen will explode if a spark occurs nearby.

One source of sparks can be the battery itself. As a battery ages, it loses water, leaving the top of the lead plates exposed to the air inside the battery case. Over time, this can lead to warpage of the plates. When the driver starts the engine, the heavy demand for power can cause these already warped plates to flex, touch and thus spark, says Steve Mazor, head of engineering and safety for the Automobile Club of Southern California. The most common cause of battery explosions upon start-up is dirty battery posts and cables, says Sam Memmolo, a master mechanic in Douglasville, Ga.

ups battery explosion causes

The dirt prevents a good connection and allows electrical arcing. So it is a good idea to inspect and clean battery posts regularly. Improper jump-starting is another leading cause of explosions. Always connect jumper cables to the dead battery first, then to the good battery. Another important safety precaution is to attach the negative jumper cable for the dead battery to an unpainted metal portion of the car frame, rather than to the negative battery post.

That allows any sparking to occur far from the battery itself. The potential for battery explosions may be greater than it was 10 years ago.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

It only takes a minute to sign up.

ups battery explosion causes

I was about feet away and two mechanics were jump starting a Harley Davidson from a truck. The operator of the truck was revving the engine up and the motorcyclist was trying to start the motorcycle with the starter. Eventually the motorcycle battery exploded. I understand there is hydrogen gas being emitted and there could have been a spark. The incident happened in to help provide historical context to the level of battery technology for any battery geek reading this.

So we have hydrogen gas as a fuel and possibly spark as a catalyst but what other circumstances would make a battery explode. To provide a conclusion to the story, the motorcyclist ran into the shop and guys starting shooting him with water and throwing baking soda all over him. He was ok but totally humiliated with acid holes in his jeans and shirt and mumbling about how stupid that was.

I like this write-up which comes from the LA Times It seems hydrogen gas is the main reason for the seasonbut how the hydrogen occurs and how it gets ignited is of use from the article. It helps to know a little bit about volt lead-acid batteries. They have six two-volt chambers, called cells, that contain a grid of lead plates submerged in sulfuric acid.

Electricity is generated when the acid reacts with the lead plates and water. One byproduct of the process is gaseous hydrogen, an element so highly flammable that it is used to power rocket engines. Charging a battery also generates hydrogen. And because heat drives up hydrogen output, you can expect more trouble generally in hot weather. The danger is that hydrogen will explode if a spark occurs nearby. One source of sparks can be the battery itself. As a battery ages, it loses water, leaving the top of the lead plates exposed to the air inside the battery case.

Over time, this can lead to warpage of the plates. When the driver starts the engine, the heavy demand for power can cause these already warped plates to flex, touch and thus spark, says Steve Mazor, head of engineering and safety for the Automobile Club of Southern California.

The most common cause of battery explosions upon start-up is dirty battery posts and cablessays Sam Memmolo, a master mechanic in Douglasville, Ga. The dirt prevents a good connection and allows electrical arcing. So it is a good idea to inspect and clean battery posts regularly. Improper jump-starting is another leading cause of explosions.This is probably a bit of paranoia but I wanted to get opinions anyway.

In the back of my mind, I've planned to get a UPS at home for a desktop computer for a while now, and the combination of some recent power events and migrating that machine to an SSD has brought the issue back up again. The main thing that has me hesitating is that the UPS would be in a room where our dog stays often when we're away from the house for a few hours.

At my office, we had a UPS battery leak once, albeit possibly caused by an overheat due to an AC unit failure, and we've got probably 15 UPS's running without issue. But however unlikely, over night it filled the office suite with a very strong sulfur smell, which is very unpleasant and also toxic. Unlikely as it might be, the thought of a battery failing while I'm not home and the dog being trapped in a room filling with H2S or H2SO4 is not all that appealing when compared to the also-low likelihood of some kind of hardware damage or data corruption due to a power failure, on a computer that's mostly used for web browsing and has backup coverage.

Do the sealed lead-acid batteries used in consumer UPS's resist leaks pretty well? Does anyone know how common this type of failure is? A lithium ion UPS is possibly an option but they're quite a bit more expensive of course and probably not worth it in this instance, so I'm mainly curious about the standard lead acid types. Anecdotes or data? If you have the conditions to explode a lead acid battery, you also have the conditions to explode a lithium ion battery.

I'd MUCH sooner have a lead acid venting which causes a bad smell than a lithium ion which causes firey explosion. Hat Monster wrote: I'd MUCH sooner have a lead acid venting which causes a bad smell I'm not sure I'd call sulfuric acid vapor just a "bad smell", though I don't know if the small SLA batteries in a small UPS could produce enough to be a significant health hazard without also being on fire.

Hat Monster wrote: than a lithium ion which causes firey explosion. Don't forget the potential for hydrofluoric acid vapor, that's potentially worse since you could get permanent debilitating lung damage with pretty short exposures.

I'm curious though how LiFePO 4 compares in terms of safety to lead acid. Hat Monster wrote: If you have the conditions to explode a lead acid battery, you also have the conditions to explode a lithium ion battery. I'm not so much concerned about environmental conditions leading the failure as how a defective battery might fail.

EDIT to clarify: Actually I understand you are not just talking about external environmental conditions, and fair point that equipment malfunction causing a LiIon battery failure is probably worse than the same thing causing a lead acid battery failure.

Hino dpr reset

It's not clear to me whether either type is more likely to fail than the other, though. Don't worry about lead acid. Think about your car battery and how rough most people are with those and how few catastrophically fail. Worst thing that could happen would be battery acid everywhere, but so extremely unlikely.

ups battery explosion causes

Or small amounts of hydrogen and oxygen produced during overcharging that could theoretically make a small explosion, but again, have you ever heard of that happening?

How many lead acid batteries are on the road right now? Lithium Ion on the other hand, how many fires have you heard related to those? Boeing fires, laptop recalls due to fires, etc. Lithium Ion is much more dangerous. I have a large 14AH 58volt LifePo4 battery for my bicycle as it was the best battery for an electric bicycle, but I have read about numerous fires from them engulfing entire residences. Mostly from poorly built home brew applications but there is a possibility of thermal runaway causing it in any battery of its type.

The failure mode for most lead Acid batteries is it stops working, the failure mode of LifePo4 is intense fire. It is one thing on my mind everytime I park my bicycle at work or at home.Battery failure is the leading culprit behind the majority of UPS catastrophes. UPS batteries are electro-chemical devices whose ability to store and deliver power slowly depreciates over time.

No matter how well you maintain, store and use your batteries, they will still require replacement when they have reached their end of life. Nothing can be done to prevent a battery from eventually reaching its end-of-service life. However, avoiding the following mistakes can help ensure a maximum lifespan.

Poor storage of unused batteries — Even as a battery sits unused, its lifetime begins to decrease. Any variation, but especially increased temperature, can affect performance and lifespan. Routine maintenance checks can help detect thermal hotspots and verify proper ventilation. Over-cycling — After a UPS operates on battery power during a power failure, the battery recharges for future use, an event called the discharge cycle. When a battery is installed, it is at percent of its rated capacity.

However, each discharge and subsequent recharge slightly reduces the capacity of the battery. Improper float voltage — Every battery manufacturer will specify the charging voltage ranges for their own cell design. If a battery is consistently charged outside of these parameters, it can cause significant damage. Undercharging or low voltage can cause sulfate crystals to form on the battery plates. These crystals will eventually harden and reduce the available capacity of the battery over time.

ups battery explosion causes

Overcharging with a float voltage that is too high can cause excessive hydrogen and oxygen gases and can lead to internal dryout that, once accelerated, can cause thermal runaway — resulting in failure or even fire and explosion. Incorrect battery application — UPS batteries are made specifically for UPSs, just as other batteries are made specifically for their respective appliances.

UPS batteries are built to deliver extremely high rates of energy for a short time, generally up to 15 minutes. Conversely, other batteries, such as telecom and switchgear batteries, are designed to run for longer periods of time, typically between four and eight hours. If a user runs a telecom application with a UPS battery, it will force the battery to run for much longer than its intended purpose.

How to Avoid Battery Explosions (Yes, They Really Happen)

If one cell in a string opens, it will break the current in the entire string. In short, just one failed battery cell can bring down your entire infrastructure. Preventative maintenance includes visual inspection, battery voltage testing, thermal image scans to test for hot or abnormal conditions, and retesting the torque on the battery terminal connections. If tests show any irregularities, we can determine how critical the situation is and if it makes sense to replace the batteries.

Regular battery service and maintenance is critical in ensuring the reliability of your UPS. Preventative maintenance not only helps connections and removes corrosion, but it can also identify an unhealthy battery before it fails.

Is your battery backup ready? Learn more about battery testing, maintenance, and replacement. Contact QPS today. Hi, Nice. Thank you for the sharing this wonderful information, You have provided some good solutions.I finally had to put a bear trap on the fuse box to avoid it, but by that time we already lost 3 UPS.

Is there a way to avoid this happening? Other than what you've done, there isn't much. You could start sending bills to the people that flip the switch Hmmm, per an earlier post, is this a datacenter or a IT room or a closet Seriously though, good question. Battery life is often subjective to the manufacturer but often the story we tell is this:.

At room temperatures of 90 deg or more especially at or higherThermal Runway becomes and issue. Thermal runaway is usually caused by high internal battery temperatures from high ambient temperatures plus overcharging. It sounds like you know first hand what happens after that. You know this is such a common problem. We have over some beers discussed high temperature UPSs for your very issue High temp batteries just make the UPS unreasonably expensive.

Also, to actually answer your question, we do have a Battery Handbook mostly for large batteries, but the princples are the same. What about including some temperature safety checks on the UPS to avoid the problem? Would it be difficult to implement? If it gets too hot, shutdown UPS, or batteries, with option to shut down servers if connected I never connect the UPS management to the servers. A case in point is that a Monday I woke up and realized I had no new email since the evening before, so I just got dressed and went to work 4 min drive.

As I was getting closer to the server room I could hear the server fans spinning like crazy, I opened the door and it was like inside an oven. It took a huge fan to cool off the room enough so the servers would start up again. I lost 4 Hard drives, and 2 UPS.

For limiting charging, most reputable UPS manufacturers at least have some sort of feature related to "temperature compensation". The idea is to limit or kill the charger if the UPS temperature starts to soar.

I'm trying to think when most units would have this as standard We've been doing it since the mid's actually, we tend to cut our charger off regardless of ambient temp so your particular model may vary.


thoughts on “Ups battery explosion causes

Leave a Reply

Your email address will not be published. Required fields are marked *