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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Jump leads -- a cautionary tale
A few weeks ago I returned from holiday to find the car battery was
totally flat. The only neighbour at home who might have helped start the car didn't have any jump leads, and neither did I, so I had to call in Homestart to get the car going. Determined not to get into that situation again, I bought a pair of jump leads. Magnificent specimens, heavy cables, large crocodile clips surrounded in thick insulating plastic to prevent accidental short circuits. Then, a few days ago, I came across an old gent in a car park, trying to start his car. As the car was a Rover, I felt sorry for him, and said I could give him a jump start. I positioned my car alongside his, and then got the brand new jump leads from the boot. Major problem. The insulating plastic around the clips was so thick that it was totally impossible to attach them to the battery terminals in either car! Half an hour with a hacksaw was needed to remove the plastic at the open ends of the clips, and now it's possible to attach them to the battery. So if you have jump leads and have never tried them out, you know what you have to do. -- Ian |
#2
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Jump leads -- a cautionary tale
news wrote: Then, a few days ago, I came across an old gent in a car park, trying to start his car. As the car was a Rover, I felt sorry for him, and said I could give him a jump start. I positioned my car alongside his, and then got the brand new jump leads from the boot. Last time I helped someone out in such a situation, it was at work. I connected up my end, and he had the other ends to connect up his end. Big flash and crackle before I yanked a lead off. Well, he connected them round the wrong way. Was just thinking to myself that I should have done it and not trusted it to anyone else, when it dawned on me that he is the engineer who designs the high power (like 5V @ 1000W) supplies for the minicomputers we manufactured. Fortunately, no damage done. -- Andrew Gabriel |
#3
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Jump leads -- a cautionary tale
"news" wrote in message ... A few weeks ago I returned from holiday to find the car battery was totally flat. The only neighbour at home who might have helped start the car didn't have any jump leads, and neither did I, so I had to call in Homestart to get the car going. Determined not to get into that situation again, I bought a pair of jump leads. You still need someone kind enough to help you out. I remember coming back to Heathrow from Glasgow one evening to find I'd left my headlights on all day. I had a nice pair of leads with me, but not one person I asked had the kindness to help me. 'Twas a Triumph Dolomite. Maybe if I'd had a Rover...... Peter |
#4
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Jump leads -- a cautionary tale
Peter Taylor wrote:
You still need someone kind enough to help you out. I remember coming back to Heathrow from Glasgow one evening to find I'd left my headlights on all day. I had a nice pair of leads with me, but not one person I asked had the kindness to help me. 'Twas a Triumph Dolomite. Maybe if I'd had a Rover...... ..... or you lived up north! Jon |
#5
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Jump leads -- a cautionary tale
"Peter Taylor" wrote in message
... "news" wrote in message ... A few weeks ago I returned from holiday to find the car battery was totally flat. The only neighbour at home who might have helped start the car didn't have any jump leads, and neither did I, so I had to call in Homestart to get the car going. Determined not to get into that situation again, I bought a pair of jump leads. You still need someone kind enough to help you out. I remember coming back to Heathrow from Glasgow one evening to find I'd left my headlights on all day. I had a nice pair of leads with me, but not one person I asked had the kindness to help me. 'Twas a Triumph Dolomite. Maybe if I'd had a Rover...... With all the modern electronics in cars nowdays, I would be wary of using jump leads, but I do still carry an old pair! -- Michael Chare |
#6
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Jump leads -- a cautionary tale
"Michael Chare" wrote in message ... With all the modern electronics in cars nowdays, I would be wary of using jump leads, but I do still carry an old pair! Have you ever seen a car electronics damaged by using jumper leads? What would be the failure mechanism? |
#7
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Jump leads -- a cautionary tale
In article ,
Michael Chare wrote: With all the modern electronics in cars nowdays, I would be wary of using jump leads, but I do still carry an old pair! The hand book of my car actually gives instructions on jump starting and provides terminals under the bonnet as the battery is in the boot. -- He who laughs last, thinks slowest. Dave Plowman London SW To e-mail, change noise into sound. |
#8
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Jump leads -- a cautionary tale
"Dave Plowman (News)" thougha haze of senile flatulence wrote in message ... The hand book of my car actually gives instructions on jump starting That's called crank handle. snip the rest |
#9
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Jump leads -- a cautionary tale
In article ws.net,
Doctor Drivel wrote: The hand book of my car actually gives instructions on jump starting That's called crank handle. Like your 'name', John? -- *One tequila, two tequila, three tequila, floor. Dave Plowman London SW To e-mail, change noise into sound. |
#10
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Jump leads -- a cautionary tale
"Dave Plowman (News)" through a haze of senile flatulence wrote in message ... In article ws.net, Doctor Drivel wrote: The hand book of my car actually gives instructions on jump starting That's called crank handle. Like your 'name', My name is not handle. snip senile drivel |
#11
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Jump leads -- a cautionary tale
On Wed, 19 Oct 2005 15:34:38 +0100, Doctor Drivel
wrote: My name is not handle. We all know that. It rhymes with the island of Sri Lanka. John Schmitt -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ |
#12
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Jump leads -- a cautionary tale
"John Schmitt" wrote in message news On Wed, 19 Oct 2005 15:34:38 +0100, Doctor Drivel wrote: My name is not handle. We all know that. It rhymes with the island of Sri Lanka. Randolph, my name does not rhyme with Ceylon. Now your old name rhymed with S**t. Just as well you changed it. |
#13
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Jump leads -- a cautionary tale
"John Schmitt" wrote in message news On Wed, 19 Oct 2005 15:34:38 +0100, Doctor Drivel wrote: My name is not handle. We all know that. It rhymes with the island of Sri Lanka. John Schmitt -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ Someone else not impressed with "doctor drivel" - that's two in ten minutes, not counting the ones I've missed.... Nick |
#14
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Jump leads -- a cautionary tale
"Nick" wrote in message ... "John Schmitt" wrote in message news On Wed, 19 Oct 2005 15:34:38 +0100, Doctor Drivel wrote: My name is not handle. We all know that. It rhymes with the island of Sri Lanka. John Schmitt -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ Someone else not impressed with "doctor drivel" - that's two in ten minutes, not counting the ones I've missed.... Randolph is a great admirer of mine. |
#15
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Jump leads -- a cautionary tale
Dave Plowman (News) wrote:
In article , Michael Chare wrote: With all the modern electronics in cars nowdays, I would be wary of using jump leads, but I do still carry an old pair! The hand book of my car actually gives instructions on jump starting and provides terminals under the bonnet as the battery is in the boot. Same as mine. There's a dirty great +ve terminal on top of the engine under a plastic cover, and a (Brass looking) bolt on the front right suspension bolts for the -ve. Although always connect last, and remove the +ve terminal first when it's started. H |
#16
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Jump leads -- a cautionary tale
Hamie wrote:
Dave Plowman (News) wrote: In article , Michael Chare wrote: With all the modern electronics in cars nowdays, I would be wary of using jump leads, but I do still carry an old pair! The hand book of my car actually gives instructions on jump starting and provides terminals under the bonnet as the battery is in the boot. Same as mine. There's a dirty great +ve terminal on top of the engine under a plastic cover, and a (Brass looking) bolt on the front right suspension bolts for the -ve. Although always connect last, and remove the +ve terminal first when it's started. NO NO NO Always connect the earthed connection last and remove first Also never complete the connection in the vicinity of the battery i.e don't ever use the -ve battery terminal -- |
#17
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Jump leads -- a cautionary tale
On Thu, 20 Oct 2005 23:14:57 UTC, Andy Champ wrote:
Matt wrote: NO NO NO Always connect the earthed connection last and remove first I've often heard this said. Why? If you connect the earthed connection first...and then drop/brush the other lead against the body of the car..... Also never complete the connection in the vicinity of the battery i.e don't ever use the -ve battery terminal Hydrogen? At least. -- The information contained in this post is copyright the poster, and specifically may not be published in, or used by Avenue Supplies, http://avenuesupplies.co.uk |
#18
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Jump leads -- a cautionary tale
Andy Champ wrote: Hydrogen? Hydrogen and Oxygen. Yeah! The battery can dry out leaving a empty space to fill up with hydrogen & oxygen, an explosive mixture. A long time ago I blew such a battery up, left a spanner on it while turning the engine over. Big bang. BLOODY HUGE BANG! I was left with the bottom 2 inches of the battery casing containing a steaming puddle of acid and the remnants of the plates dangling on the connections. The only reason I didn't get a hot shower of acid and plastic shrapnel was that I was in the car & the bonnet was up. It was a "sealed for life" battery so I hadn't been able to check the electrolyte level. Not much acid spillage, other than droplets; there hadn't been much acid in it. I repeat the embarrassing story only in hope of preventing anyone else getting blinded or killed by an exploding battery. The final connection is liable to cause a spark and so is to the chassis or engine and a loooooooooooong way away from the battery. Treat with utmost caution. Be very afraid. |
#19
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Jump leads -- a cautionary tale
Andy Champ wrote:
Matt wrote: NO NO NO Always connect the earthed connection last and remove first I've often heard this said. Why? Also never complete the connection in the vicinity of the battery i.e don't ever use the -ve battery terminal Hydrogen? Because the first wire you connect is NOT a problem (unless the bodies are touching) You could drop the clips onto the body or anywhere and not cause a "flash" Then when you connect the 2nd wire, at the "good vehicle" end then its still a relatively safe situation as you can easily connect to the "flat battery vehicle" preferably on an earth strap well away from the battery terminals as if a spark occurs it will be away from explosive hydrogen that may be around the battery (its a slim chance) Do it the other way round, earth first and you always have a +ve terminal to connect last and usually this can only be done at the battery, drop the jump lead in the engine bay of the "flat battery vehicle" and you may get a big bang and a screwed up electrical system on the "good vehicle" also as you connect to the "flat battery vehicle" you might get a spark and explode the hydrogen again. Of course if you've done it loads of times you connect both wires to the good battery, walk to the flat one and connect the +ve one a second or two before you do the -ve one and all is well .......until the day you get distracted, put the clips on the floor, then there is a spark and the leads start smoking and glowing, the good vehicle revs drop and the alternator blows, the battery explodes and showers everyone with acid. -- |
#20
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Jump leads -- a cautionary tale
Matt wrote:
NO NO NO Always connect the earthed connection last and remove first I've often heard this said. Why? Also never complete the connection in the vicinity of the battery i.e don't ever use the -ve battery terminal Hydrogen? Andy |
#21
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Jump leads -- a cautionary tale
"Matt" wrote in message ... Andy Champ wrote: Matt wrote: NO NO NO Always connect the earthed connection last and remove first I've often heard this said. Why? Also never complete the connection in the vicinity of the battery i.e don't ever use the -ve battery terminal Hydrogen? Because the first wire you connect is NOT a problem (unless the bodies are touching) You could drop the clips onto the body or anywhere and not cause a "flash" Then when you connect the 2nd wire, at the "good vehicle" end then its still a relatively safe situation as you can easily connect to the "flat battery vehicle" preferably on an earth strap well away from the battery terminals as if a spark occurs it will be away from explosive hydrogen that may be around the battery (its a slim chance) Do it the other way round, earth first and you always have a +ve terminal to connect last and usually this can only be done at the battery, drop the jump lead in the engine bay of the "flat battery vehicle" and you may get a big bang and a screwed up electrical system on the "good vehicle" also as you connect to the "flat battery vehicle" you might get a spark and explode the hydrogen again. Of course if you've done it loads of times you connect both wires to the good battery, walk to the flat one and connect the +ve one a second or two before you do the -ve one and all is well ........until the day you get distracted, put the clips on the floor, then there is a spark and the leads start smoking and glowing, the good vehicle revs drop and the alternator blows, the battery explodes and showers everyone with acid. ....and just why would the battery explode, the alternator will cease to output after the regulator vaporises, the leads might start to glow but the battery will just discharge - as all you are doing is a (servier) load bank test - it won't do the battery much good but it's extremely unlikely to cause it to explode. There is some utter clap-trap in this thread, most of you are clueless as to the real risks and what are very slim possibilities or 'old wives tales'... I'm not going to bother explaining but most of you are clueless as to how to use jump leads correctly and are likely to do more damage to one or both of the cars electrical systems - leave well alone or be very afraid! |
#22
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Jump leads -- a cautionary tale
":::Jerry::::" wrote:
...and just why would the battery explode, the alternator will cease to output after the regulator vaporises, the leads might start to glow but the battery will just discharge - as all you are doing is a (servier) load bank test - it won't do the battery much good but it's extremely unlikely to cause it to explode. Utter claptrap that just proves how wrong you are "Jerry" In no way does this equate to a simple load test. Just get back to your plumbing counter and stop messing with things you simply do not understand. -- |
#23
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Jump leads -- a cautionary tale
A lot of this is irrelevant because the OP clearly indicated that battery
was in the trunk of the car! More often a car battery is mounted adjacent to the engine and usually the reason for boosting (jump starting) is that it has run down/hasn't been charged properly, cold weather etc. In this colder climate of Eastern Canada carrying a set of cables and/or stopping to 'give somone a boost' is not that unusual. Battery explosions are rare; but agree a lot of people do not understand the hazard of making a spark at/near the battery; either when making the initial boosting connection or after the boosted vehicle has started; due to the production of hydrogen and oxygen as the battery is being rapidly recharged! (BTW nowadays most/all North American sold cars now seem to be 12 volt negative ground). So, unfortunately the instruction not to connect to the negative post/terminal of the battery itself is often ignored. Better understood, but also often ignored, considering that replacing a burnt out alternator with a rebuilt can typically cost $100 (40 to 50 quid) installed, is to not run the engine of the boosting vehicle (merely use its battery to start the stalled one), What does seem to be better understood is to disconnect the cables from the boosting vehicle first and also to connect the negative cable at the boosting vehicle to something negative such as a lift hook on the engine block etc. Thus any spark at disconnection is away from the battery vents. I have seen a portion of a battery blow up, forunately no one was injured by flying acid but the cover of two end cells of the battery were blown right off! However there was enough 'oomph' and connection left in the battery for the owner to drive it to the nearby town to buy another battery! I guess, while doing that, fortunately the battery didn't go 'open' in which case the voltage might have gone out of sight and blown other car electrics. I think that was still back in pre-alternator days. You could tell back then that a vehicle had a weak battery; when the engine slowed down to an idle the lights would dim. Driving at speed they could be superbright! |
#24
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Jump leads -- a cautionary tale
Matt wrote:
Of course if you've done it loads of times you connect both wires to the good battery, walk to the flat one and connect the +ve one a second or two before you do the -ve one and all is well .......until the day you get distracted, put the clips on the floor, then there is a spark and the leads start smoking and glowing, the good vehicle revs drop and the alternator blows, the battery explodes and showers everyone with acid. Lead acid batteries do have a rather low internal resistance! Great for fireworks and rapid heating of jump leads |
#25
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Jump leads -- a cautionary tale
In article ,
Terry wrote: Better understood, but also often ignored, considering that replacing a burnt out alternator with a rebuilt can typically cost $100 (40 to 50 quid) installed, is to not run the engine of the boosting vehicle (merely use its battery to start the stalled one), All car alternators are inherently current limiting. The internal resistance of a car battery means they have to be so. Sticking another battery in parallel and even starting the engine in this state really makes little difference. -- *A snooze button is a poor substitute for no alarm clock at all * Dave Plowman London SW To e-mail, change noise into sound. |
#26
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Jump leads -- a cautionary tale
In article ,
Matt wrote: ...and just why would the battery explode, the alternator will cease to output after the regulator vaporises, the leads might start to glow but the battery will just discharge - as all you are doing is a (servier) load bank test - it won't do the battery much good but it's extremely unlikely to cause it to explode. Utter claptrap that just proves how wrong you are "Jerry" In no way does this equate to a simple load test. Just get back to your plumbing counter and stop messing with things you simply do not understand. Unlike Drivel who likes to claim many things about himself without any proof, I can assure you Jerry has worked in the motor trade for many a year. -- *They call it PMS because Mad Cow Disease was already taken. Dave Plowman London SW To e-mail, change noise into sound. |
#27
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Jump leads -- a cautionary tale
"Matt" wrote in message ... ":::Jerry::::" wrote: ...and just why would the battery explode, the alternator will cease to output after the regulator vaporises, the leads might start to glow but the battery will just discharge - as all you are doing is a (servier) load bank test - it won't do the battery much good but it's extremely unlikely to cause it to explode. Utter claptrap that just proves how wrong you are "Jerry" In no way does this equate to a simple load test. Just get back to your plumbing counter and stop messing with things you simply do not understand. ....and just how many lead acid batteries have you made, filled, charged and then fitted, also just how many have you fault found and then repaired?... It's you and the other 'want-ta-be' experts who need to find a clue, or are you going to suggest that any resistance applied to a battery is going to cause it to explode.... |
#28
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Jump leads -- a cautionary tale
":::Jerry::::" wrote:
or are you going to suggest that any resistance applied to a battery is going to cause it to explode.... A shorted jump lead is a very small step away from a solid copper bar across the terminals, but it would appear your jump leads must have safety resistors of a few Giga Ohms so they will always be unconditionally safe. If you wish to ban all conducting materials no matter what their resistance on the grounds they might be dangerous when applied across the terminals of a lead acid battery then go ahead, i'm sure the ******s in Brussels would love to take up your cause. :-) -- |
#29
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Jump leads -- a cautionary tale
"Dave Plowman (News)" wrote:
Unlike Drivel who likes to claim many things about himself without any proof, I can assure you Jerry has worked in the motor trade for many a year. He may well have, but asserting that lead acid batteries "can't explode" is absolute and utter clap trap, already borne out by personal experiences of two posters to this thread alone. In the circumstances I'll add mine albeit witnessed from a distance Many years ago I saw the remains of a truck battery very firmly embedded in the walls of a workshop. The battery was off a 7.5 tonne ex-army truck with a dozen seats that was used to transport the karts and pupils to kart club meetings. Some reworking was being done on the truck where the karts slid onto racks and the battery had been removed for better access. It had been left in the workshop storeroom for a number of weeks, well out of the way, usually under lock and key and with the terminals well protected. One evening some renegade school karting club pupils got a bit bored waiting for their drives and wandered off through the open workshop and thought it would be a good idea to drop a steel bar across the terminals. After a few seconds it was glowing, moving from dull red to orange and with smoke and fumes pouring from the rubber casing. They changed their minds about it being a good idea at this point but nothing would move the bar, so they scarpered and merged into the crowd watching the karts. Shortly afterwards the battery had had enough and ended up in hundreds of pieces with bits flying all over the place. Despite a few 100cc karts tearing around in the playground only fifty yards away the noise of the explosion and the half dozen windows disintegrating immediately attracted everyone's attention. The cleanup cost a fortune and the kart club was closed. The perpetrators were never caught although the staff always had their suspicions (one of the teachers was a friend of my parents) About ten years later the full story came out during a beer fuelled evening before one of the perpetrators emigrated to Canada. Me? I was looking at a spark plug at the time, jumped out of my skin, dropped it and smashed it. Normally that would be time for an earful from the teacher but on this occasion they had a lot more to worry about. The dropped jump leads shorting mentioned previously happened at a local farm a few years ago, the day was stinking hot and being bare chested the guy ended up with battery acid over his back and chunks of plastic battery casing embedded in a tender place. -- |
#30
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Jump leads -- a cautionary tale
:::Jerry:::: wrote: ...and just how many lead acid batteries have you made, filled, charged and then fitted, also just how many have you fault found and then repaired?... It's you and the other 'want-ta-be' experts who need to find a clue, Are you asserting that they won't explode? I'm a don't-wannabe-an-expert with regard to lead acid batteries. It exploded. I was there. What more can I tell you? I'd always assumed that it was an explosive mixture of hydrogen & oxygen. I still think that was the cause. I had heard elsewhere that they can explode as a result of the electrolyte boiling if you short the terminals, as per the kart story. |
#31
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Jump leads -- a cautionary tale
"Matt" wrote in message ... "Dave Plowman (News)" wrote: Unlike Drivel who likes to claim many things about himself without any proof, I can assure you Jerry has worked in the motor trade for many a year. He may well have, but asserting that lead acid batteries "can't explode" is absolute and utter clap trap, already borne out by personal experiences of two posters to this thread alone. But I never said that... In the circumstances I'll add mine albeit witnessed from a distance I have seen many batteries explode, sometimes at far to a quarter, but I have NEVER seen one explode due to merely being shorted out, especially the length of jump leads away. Many years ago I saw the remains of a truck battery very firmly embedded in the walls of a workshop. The battery was off a 7.5 tonne ex-army truck with a dozen seats that was used to transport the karts snip Sorry, but having seen larger batteries off larger vehicles than a 7.5 t lorry explode, mostly due to internal faults, you story (because that is what is, with a lot of 'padding' I suggest...) doesn't quite fit what actually happens what a battery case explodes. |
#32
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Jump leads -- a cautionary tale
Aidan wrote: Are you asserting that they won't explode? Had a search on the HSE website and found a fascinating report of accidents involving fork lift trucks. http://www.hse.gov.uk/pubns/sir60.pdf Quote from that report; 116. Eight (57%) of the total number of accidents/incidents investigated involved battery explosions. Four (50%) of these accidents/incidents occurred during battery charging because operatives or drivers placed or dropped metal objects on top of the batteries or a loose connection or exposed cable caused a spark that ignited hydrogen given off by the charging process. Two (25%) occurred when vehicles were being jump started. And two (25%) when trucks were being driven soon after battery charging and a loose connection caused sparks that ignited hydrogen given off by the batteries. That's confirmed it then, lead acid batteries can explode. |
#33
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Jump leads -- a cautionary tale
"Matt" wrote in message ... ":::Jerry::::" wrote: or are you going to suggest that any resistance applied to a battery is going to cause it to explode.... A shorted jump lead is a very small step away from a solid copper bar across the terminals, but it would appear your jump leads must have safety resistors of a few Giga Ohms so they will always be unconditionally safe. Well considering that I have seen a solid bar (as use as a busbar) short out a fully charged battery you are more likely to melt the lead terminals that case an explosion. Stop your utter , ill-informed, clap trap! I notice that you seem to have forgotten to tell us just what actual experience you have with lead acid batteries... |
#34
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Jump leads -- a cautionary tale
"Aidan" wrote in message oups.com... :::Jerry:::: wrote: ...and just how many lead acid batteries have you made, filled, charged and then fitted, also just how many have you fault found and then repaired?... It's you and the other 'want-ta-be' experts who need to find a clue, Are you asserting that they won't explode? I said it's unlikely to explode. I'm a don't-wannabe-an-expert with regard to lead acid batteries. It exploded. I was there. What more can I tell you? What was the fault with the battery, an internal break in the inter-cell connecting bars or perhaps between posts and plates? The jump leads themselves were not what caused it to exploded, any such load could have caused the same, indeed I have seen cases were a starter motor that draw a higher than normal current has caused a faulty battery to explode. I'd always assumed that it was an explosive mixture of hydrogen & oxygen. I still think that was the cause. I had heard elsewhere that they can explode as a result of the electrolyte boiling if you short the terminals, as per the kart story. You are correct that the hydrogen / oxygen mix *can* cause a battery to explode [1], but the original story in this thread was about jump leads being shorted out away from the battery, unless there is an internal fault that causes an internal spark it's very unlikely that the short out jump lead alone would cause the explosion - otherwise a load bank test would do the same to any battery tested! I should also add that the comments about clipping the 'grounded' end of the jump leads to the engine of the non starting car is often done not due to any possible problem with the batteries but the fact that by doing so it removes the possibility of a faulty engine earth (grounding) cable. |
#35
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Jump leads -- a cautionary tale
"Aidan" wrote in message oups.com... Aidan wrote: Are you asserting that they won't explode? Had a search on the HSE website and found a fascinating report of accidents involving fork lift trucks. http://www.hse.gov.uk/pubns/sir60.pdf Quote from that report; 116. Eight (57%) of the total number of accidents/incidents investigated involved battery explosions. Four (50%) of these accidents/incidents occurred during battery charging because operatives or drivers placed or dropped metal objects on top of the batteries or a loose connection or exposed cable caused a spark that ignited hydrogen given off by the charging process. Two (25%) occurred when vehicles were being jump started. And two (25%) when trucks were being driven soon after battery charging and a loose connection caused sparks that ignited hydrogen given off by the batteries. That's confirmed it then, lead acid batteries can explode. FFS, learn to read what I said and not what some **** thinks I said, and were does it say above 'due to jump leads shorting out at the non battery end'?... |
#36
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Jump leads -- a cautionary tale
In message .com,
Aidan writes :::Jerry:::: wrote: ...and just how many lead acid batteries have you made, filled, charged and then fitted, also just how many have you fault found and then repaired?... It's you and the other 'want-ta-be' experts who need to find a clue, Are you asserting that they won't explode? I'm a don't-wannabe-an-expert with regard to lead acid batteries. It exploded. I was there. What more can I tell you? I've also seen the aftermath of a lead acid battery exploding, I missed it by about 5 minutes When I say explode, I mean explode, not a gentle leak from one corner -- geoff |
#37
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Jump leads -- a cautionary tale
:::Jerry:::: wrote: FFS, learn to read what I said and not what some **** thinks I said, and were does it say above 'due to jump leads shorting out at the non battery end'?... I had read what you had written. At that time what you had written was this; "...and just how many lead acid batteries have you made, filled, charged and then fitted, also just how many have you fault found and then repaired?... It's you and the other 'want-ta-be' experts who need to find a clue, or are you going to suggest that any resistance applied to a battery is going to cause it to explode.... " You have since added to it, but at that time your respones was to the effect of; that's rubbish, I'm an expert, you're not and I'm not telling you what I know, so there. In the absence of your expert contribution, I then researched it elsewhere and found that battery explosions are a regular occurence. So many thanks for nothing, I've found out what I wanted to know without any assistance from you. |
#38
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Jump leads -- a cautionary tale
In article .com,
Aidan wrote: In the absence of your expert contribution, I then researched it elsewhere and found that battery explosions are a regular occurence. I'm sure there are worldwide - given the number of cars. But I've been tinkering with cars for many a year and have never had problems. Perhaps because I learned very early on to respect electricity. -- *Before they invented drawing boards, what did they go back to? Dave Plowman London SW To e-mail, change noise into sound. |
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Jump leads -- a cautionary tale
":::Jerry::::" wrote:
I should also add that the comments about clipping the 'grounded' end of the jump leads to the engine of the non starting car is often done not due to any possible problem with the batteries but the fact that by doing so it removes the possibility of a faulty engine earth (grounding) cable. The "possible problem with the batteries" IS THE PROBLEM -- |
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Jump leads -- a cautionary tale
":::Jerry::::" wrote:
Sorry, but having seen larger batteries off larger vehicles than a 7.5 t lorry explode, mostly due to internal faults, you story (because that is what is, with a lot of 'padding' I suggest...) doesn't quite fit what actually happens what a battery case explodes. Actually there was a worldwide shortage of steel that year due to the new invention of heavier than balsa aircraft and this fact, together with savage education cutbacks, meant the karts were sold off the first week of term so the school could afford chairs for the pupils to sit on. The battery that never exploded was still in the army truck that was hundreds of miles away on a secret joint SAS Home Guard exercise on Salisbury Plain. This battery carried on working for another 5 years before it was melted down to form a new roof for the local church and a selection of fishing weights for JR Hartley. Just before they placed the non existent steel bar on the non existent battery terminals the famous three who never existed were all abducted by aliens who took the non existent battery back to planet zog to temporarily power a new kind of combi boiler they were developing. The aliens returned to earth and for a laugh and as a lasting reminder of their visit sprayed electrolyte around the room and hammered bits of battery casing into the wall. The non existent workshop windows were damaged by the sonic blast of the alien spacecraft leaving as they performed a triple salko round the science block (now fully equipped with chairs) so the famous three who never put a steel bar on the terminals of a battery in the first place could be deposited round the back of the bike sheds where they subsequently spent the next hour examining the literary aspects of an old copy of Mayfair while having a crafty smoke. Due to restrictions being placed on all British citizens that have been abducted by aliens from emigrating to Canada the story never emerged on a night fuelled by beer as all the beer in the non existent pub had been used instead to fill the new explosive proof lead alcohol batteries, one of which by total coincidence had just been removed from a brand new unwanted Army truck, that, due to a sudden outbreak of worldwide peace, had been donated to a local school. The school immediately set up a kart club and modified the truck to transport karts and pupils all over the country. Toyota meanwhile, in what would subsequently be seen as an extremely bad move, took over Budweiser but then realised their new lead "weak as ****" alcohol fuelled Prius would only travel to the end of a four house cul-de-sac before deliberately crashing into a lamp post and announcing "attention battery flat fuel tank empty driver sober" simultaneously in Japanese, Klingon and Serbo-Croat. Get over it Jerry, It happened, the aftermath was witnessed by a few dozen pupils, staff and parents. -- |
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