Date: 13/03/2019 21:40:22
From: Divine Angel
ID: 1359134
Subject: Microwaving batteries

https://notalwaysright.com/about-to-get-charged-with-battery-part-8/140784/

Basic story: woman calls a store, saying she bought a takeaway coffee, reheated it at home in a microwave, found a button battery, calls store to complain, manager calls her a liar because the battery would have exploded in the microwave.

Several of the comments under the story debate whether a button battery in coffee would explode in the microwave. I didn’t read all the comments, I got a bit lost. In any case, I’m not about to test it.

What say you?

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Date: 13/03/2019 21:43:31
From: sibeen
ID: 1359137
Subject: re: Microwaving batteries

I suspect the battery will have survived.

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Date: 13/03/2019 21:53:46
From: furious
ID: 1359142
Subject: re: Microwaving batteries

Straight out asking for coffee for life? Regardless of whether the battery would explode or not, I’m falling on the ide of “she’s lying”…

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Date: 13/03/2019 21:58:03
From: transition
ID: 1359143
Subject: re: Microwaving batteries

coffee(water) absorbs most of microwave energy.

the coffee is a load, a fairly normal load of typical MWO use, + that near load around the battery reduced the heating of the battery.

guessing.

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Date: 13/03/2019 21:59:02
From: party_pants
ID: 1359144
Subject: re: Microwaving batteries

We need someone with the right setup to do the experiment safely. Pity the Mythbusters are now defunct.

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Date: 13/03/2019 22:01:44
From: transition
ID: 1359147
Subject: re: Microwaving batteries

party_pants said:


We need someone with the right setup to do the experiment safely. Pity the Mythbusters are now defunct.

lithium might be just what the whinger needs

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Date: 13/03/2019 22:02:15
From: furious
ID: 1359148
Subject: re: Microwaving batteries

Didnt they do some kind of “talent show” where they got new hosts?

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Date: 13/03/2019 22:07:28
From: party_pants
ID: 1359151
Subject: re: Microwaving batteries

furious said:

  • We need someone with the right setup to do the experiment safely. Pity the Mythbusters are now defunct.

Didnt they do some kind of “talent show” where they got new hosts?

I don’t know.

It would not be Mythbusters for me without Adam and Jamie. I did watch The White Rabbit Project which Tori, Grant and Kari did, but that wasn’t quite so good. Hard to see any new crew filling their shoes. Besides which, I think they had run out of myths to test towards the end, the last series was good but they deliberately wanted to go out on a high.

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Date: 13/03/2019 22:11:13
From: roughbarked
ID: 1359155
Subject: re: Microwaving batteries

party_pants said:


furious said:
  • We need someone with the right setup to do the experiment safely. Pity the Mythbusters are now defunct.

Didnt they do some kind of “talent show” where they got new hosts?

I don’t know.

It would not be Mythbusters for me without Adam and Jamie. I did watch The White Rabbit Project which Tori, Grant and Kari did, but that wasn’t quite so good. Hard to see any new crew filling their shoes. Besides which, I think they had run out of myths to test towards the end, the last series was good but they deliberately wanted to go out on a high.

What I know is that mucking about with batteries other than the way instructed can be destructive.

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Date: 13/03/2019 22:31:22
From: fsm
ID: 1359161
Subject: re: Microwaving batteries

The button cell battery case is metal. Metal reflects microwaves and does not get heated by them.

The contents of the battery would be shielded by the metal case and so the only heat that the battery would be exposed to would be by convection from the coffee.

The coffee would need to reach a temperature that would exceed the tolerance of the battery to be able to explode.

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Date: 13/03/2019 22:33:23
From: roughbarked
ID: 1359163
Subject: re: Microwaving batteries

fsm said:


The button cell battery case is metal. Metal reflects microwaves and does not get heated by them.

The contents of the battery would be shielded by the metal case and so the only heat that the battery would be exposed to would be by convection from the coffee.

The coffee would need to reach a temperature that would exceed the tolerance of the battery to be able to explode.

Mostly all it would do would be, pollute the coffee.

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Date: 13/03/2019 22:35:11
From: roughbarked
ID: 1359164
Subject: re: Microwaving batteries

roughbarked said:


fsm said:

The button cell battery case is metal. Metal reflects microwaves and does not get heated by them.

The contents of the battery would be shielded by the metal case and so the only heat that the battery would be exposed to would be by convection from the coffee.

The coffee would need to reach a temperature that would exceed the tolerance of the battery to be able to explode.

Mostly all it would do would be, pollute the coffee.

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

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Date: 13/03/2019 22:37:54
From: roughbarked
ID: 1359165
Subject: re: Microwaving batteries

roughbarked said:


roughbarked said:

fsm said:

The button cell battery case is metal. Metal reflects microwaves and does not get heated by them.

The contents of the battery would be shielded by the metal case and so the only heat that the battery would be exposed to would be by convection from the coffee.

The coffee would need to reach a temperature that would exceed the tolerance of the battery to be able to explode.

Mostly all it would do would be, pollute the coffee.

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Even if you could get such a battery to explode it would be a minor event. People don’t even notice when it happens on their wrist. Their watch stops, so the bring it to me. I’m the one who sees whatever has happened.

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Date: 13/03/2019 22:39:56
From: fsm
ID: 1359167
Subject: re: Microwaving batteries

roughbarked said:


Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

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Date: 13/03/2019 22:44:42
From: roughbarked
ID: 1359170
Subject: re: Microwaving batteries

fsm said:


roughbarked said:

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

Yeah. I can grok that.

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Date: 13/03/2019 22:48:47
From: roughbarked
ID: 1359174
Subject: re: Microwaving batteries

roughbarked said:


fsm said:

roughbarked said:

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

Yeah. I can grok that.

Further on them exploding in the watch. I see heaps of batteries, I just toss them without testing them and a shop assistant asked me, “why don’t you test those batteries?” I replied that your younger eyes should be able to see that the battery is swollen.

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Date: 13/03/2019 22:51:15
From: roughbarked
ID: 1359175
Subject: re: Microwaving batteries

roughbarked said:


roughbarked said:

fsm said:

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

Yeah. I can grok that.

Further on them exploding in the watch. I see heaps of batteries, I just toss them without testing them and a shop assistant asked me, “why don’t you test those batteries?” I replied that your younger eyes should be able to see that the battery is swollen.

There is no need to test the old battery unless a new one doesn’t maake it work or unless it is still under some warranty..

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Date: 13/03/2019 22:54:01
From: roughbarked
ID: 1359176
Subject: re: Microwaving batteries

roughbarked said:


roughbarked said:

roughbarked said:

Yeah. I can grok that.

Further on them exploding in the watch. I see heaps of batteries, I just toss them without testing them and a shop assistant asked me, “why don’t you test those batteries?” I replied that your younger eyes should be able to see that the battery is swollen.

There is no need to test the old battery unless a new one doesn’t make it work or unless it is still under some warranty..

I mucked about with my Citizen multitester and added the light bulb from a digital watch to the battery test circuit so that whilst testing the battery, if I pressed a button, the bulb would light and I could thus see the capacity of the battery under load.

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Date: 13/03/2019 22:57:01
From: roughbarked
ID: 1359177
Subject: re: Microwaving batteries

roughbarked said:


roughbarked said:

roughbarked said:

Further on them exploding in the watch. I see heaps of batteries, I just toss them without testing them and a shop assistant asked me, “why don’t you test those batteries?” I replied that your younger eyes should be able to see that the battery is swollen.

There is no need to test the old battery unless a new one doesn’t make it work or unless it is still under some warranty..

I mucked about with my Citizen multitester and added the light bulb from a digital watch to the battery test circuit so that whilst testing the battery, if I pressed a button, the bulb would light and I could thus see the capacity of the battery under load.

Anyway, this stuff is only for when you are troubleshooting problems with a particular watch that someone actually wants me to fix, not run of the mill battery changes. If the battery has swollen and exploded, I usually quote them a new movement or a new watch.

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Date: 13/03/2019 23:03:47
From: roughbarked
ID: 1359179
Subject: re: Microwaving batteries

Yeah, reading the op right through for the first time, my thought was, maybe you’d have thought differently had the battery actually gone down with that last sip.
It would be a far bigger issue if she had swallowed it. Particularly if it was a lithium battery.

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Date: 13/03/2019 23:05:19
From: roughbarked
ID: 1359180
Subject: re: Microwaving batteries

roughbarked said:


Yeah, reading the op right through for the first time, my thought was, maybe you’d have thought differently had the battery actually gone down with that last sip.
It would be a far bigger issue if she had swallowed it. Particularly if it was a lithium battery.

But she’d probably have to be quite young or maybe with diverticulitis?

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Date: 13/03/2019 23:33:48
From: transition
ID: 1359181
Subject: re: Microwaving batteries

fsm said:


roughbarked said:

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

any (potentially explosive, or tending cause leakage or expulsion) internal heating would be from voltage difference (radio frequency) between two faces of the button, one of which is smaller.

i’d think in a typically loaded MWO (with a coffee in it for example) that the battery is unlikely to heat much.

in an unloaded MWO (ignoring the battery) the situation may be different, and depend on positioning of the battery.

so it depends on to what extent you can liven up one terminal plate of the battery like an antenna.

guessing

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Date: 13/03/2019 23:37:20
From: roughbarked
ID: 1359183
Subject: re: Microwaving batteries

transition said:


fsm said:

roughbarked said:

Between the metal plates that are basically the case is a seal that both insulates and protects against leakage to a degree. This may get damaged but not having tried it, I have no idea what setting to start with.

Microwaves have difficulty penetrating small apertures. The holes in the door of your microwave oven effectively block the microwave radiation, so I doubt that the distance between the two halves of a button cell case would be a problem.

any (potentially explosive, or tending cause leakage or expulsion) internal heating would be from voltage difference (radio frequency) between two faces of the button, one of which is smaller.

i’d think in a typically loaded MWO (with a coffee in it for example) that the battery is unlikely to heat much.

in an unloaded MWO (ignoring the battery) the situation may be different, and depend on positioning of the battery.

so it depends on to what extent you can liven up one terminal plate of the battery like an antenna.

guessing

This is the sort of stuff that happens when moisture gets on the battery or indeed when the battery leaks.

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Date: 14/03/2019 08:00:26
From: Lary
ID: 1359215
Subject: re: Microwaving batteries

An exploding battery isn’t a risk the customer was concerned about and it seems they weren’t aware it was a risk.
They were complaining about finding a battery in their coffee, which is a legitimate thing to complain about. Whether or not they put the battery there or if there was ever a battery in the first place is an entirely different issue.

There are many, many videos of batteries being microwaved, with various outcomes, but I’ve not seen one that shows a battery submerged in fluid and then microwaved.

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Date: 14/03/2019 08:24:03
From: roughbarked
ID: 1359220
Subject: re: Microwaving batteries

kids swallowing lithium batteries was on the news again this morning. The slippery little buggers are everywhere in our environment.

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Date: 14/03/2019 08:26:38
From: Lary
ID: 1359222
Subject: re: Microwaving batteries

roughbarked said:


The slippery little buggers are everywhere in our environment.

Just like single use plastic, the government should introduce legislation to limit the impact of kids on the environment.

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Date: 14/03/2019 08:31:24
From: roughbarked
ID: 1359226
Subject: re: Microwaving batteries

Lary said:


roughbarked said:

The slippery little buggers are everywhere in our environment.

Just like single use plastic, the government should introduce legislation to limit the impact of kids on the environment.

and cardinals.

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Date: 14/03/2019 09:16:21
From: dv
ID: 1359237
Subject: re: Microwaving batteries

Divine Angel said:


https://notalwaysright.com/about-to-get-charged-with-battery-part-8/140784/

Basic story: woman calls a store, saying she bought a takeaway coffee, reheated it at home in a microwave, found a button battery, calls store to complain, manager calls her a liar because the battery would have exploded in the microwave.

Several of the comments under the story debate whether a button battery in coffee would explode in the microwave. I didn’t read all the comments, I got a bit lost. In any case, I’m not about to test it.

What say you?

Bear in mind that this not a recorded transcript, just a biased person’s rendering of the conversation. Seems near impossible she said “I demand free coffee for life”, no one would be that unsubtle.

Button batteries can use all different kinds of anodes and cathodes but yeah you’d expect them to get hot in a microwave oven. On the other hand they are small and can ditch heat easily because of the big surface area to mass ratio, and if it surrounded by coffee then the convection will help.

Back on the other hand, the opportunities for a child to put a battery in a cup of coffee at home are probably greater than the chances that it could end up in a coffee from a store. They keep the cups stacked.

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Date: 14/03/2019 09:32:47
From: Divine Angel
ID: 1359241
Subject: re: Microwaving batteries

dv said:

Seems near impossible she said “I demand free coffee for life”, no one would be that unsubtle.

You’ve never worked in retail, obviously.

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Date: 14/03/2019 09:37:04
From: dv
ID: 1359246
Subject: re: Microwaving batteries

On the other other hand I personally would not drink a coffee if I knew it had been microwaved with a button battery in there. I don’t think it would explode but it could leak.

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Date: 14/03/2019 09:40:03
From: sibeen
ID: 1359247
Subject: re: Microwaving batteries

dv said:


On the other other hand I personally would not drink a coffee if I knew it had been microwaved with a button battery in there. I don’t think it would explode but it could leak.

The lithium may aid with your wild mood swings.

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Date: 14/03/2019 09:45:15
From: dv
ID: 1359250
Subject: re: Microwaving batteries

sibeen said:


dv said:

On the other other hand I personally would not drink a coffee if I knew it had been microwaved with a button battery in there. I don’t think it would explode but it could leak.

The lithium may aid with your wild mood swings.

Sunday morning is everyday for all I care, and I’m not scared

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Date: 14/03/2019 09:48:03
From: transition
ID: 1359252
Subject: re: Microwaving batteries

dv said:


sibeen said:

dv said:

On the other other hand I personally would not drink a coffee if I knew it had been microwaved with a button battery in there. I don’t think it would explode but it could leak.

The lithium may aid with your wild mood swings.

Sunday morning is everyday for all I care, and I’m not scared

coffee’s poor mans’ lithium

if you’re lucky you live in a part of the world where there’s plenty in the ground water, naturally.

Reply Quote

Date: 14/03/2019 09:56:47
From: The Rev Dodgson
ID: 1359254
Subject: re: Microwaving batteries

dv said:


Divine Angel said:

https://notalwaysright.com/about-to-get-charged-with-battery-part-8/140784/

Basic story: woman calls a store, saying she bought a takeaway coffee, reheated it at home in a microwave, found a button battery, calls store to complain, manager calls her a liar because the battery would have exploded in the microwave.

Several of the comments under the story debate whether a button battery in coffee would explode in the microwave. I didn’t read all the comments, I got a bit lost. In any case, I’m not about to test it.

What say you?

Bear in mind that this not a recorded transcript, just a biased person’s rendering of the conversation. Seems near impossible she said “I demand free coffee for life”, no one would be that unsubtle.

Button batteries can use all different kinds of anodes and cathodes but yeah you’d expect them to get hot in a microwave oven. On the other hand they are small and can ditch heat easily because of the big surface area to mass ratio, and if it surrounded by coffee then the convection will help.

Back on the other hand, the opportunities for a child to put a battery in a cup of coffee at home are probably greater than the chances that it could end up in a coffee from a store. They keep the cups stacked.

Probably similar to the probability of a needle getting into a strawberry at a packaging factory.

But I suspect the whole story is invented anyway.

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Date: 14/03/2019 09:59:10
From: Peak Warming Man
ID: 1359255
Subject: re: Microwaving batteries

The Rev Dodgson said:


dv said:

Divine Angel said:

https://notalwaysright.com/about-to-get-charged-with-battery-part-8/140784/

Basic story: woman calls a store, saying she bought a takeaway coffee, reheated it at home in a microwave, found a button battery, calls store to complain, manager calls her a liar because the battery would have exploded in the microwave.

Several of the comments under the story debate whether a button battery in coffee would explode in the microwave. I didn’t read all the comments, I got a bit lost. In any case, I’m not about to test it.

What say you?

Bear in mind that this not a recorded transcript, just a biased person’s rendering of the conversation. Seems near impossible she said “I demand free coffee for life”, no one would be that unsubtle.

Button batteries can use all different kinds of anodes and cathodes but yeah you’d expect them to get hot in a microwave oven. On the other hand they are small and can ditch heat easily because of the big surface area to mass ratio, and if it surrounded by coffee then the convection will help.

Back on the other hand, the opportunities for a child to put a battery in a cup of coffee at home are probably greater than the chances that it could end up in a coffee from a store. They keep the cups stacked.

Probably similar to the probability of a needle getting into a strawberry at a packaging factory.

But I suspect the whole story is invented anyway.

Have we established what sort of coffee it was?

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Date: 14/03/2019 10:02:34
From: poikilotherm
ID: 1359256
Subject: re: Microwaving batteries

transition said:


dv said:

sibeen said:

The lithium may aid with your wild mood swings.

Sunday morning is everyday for all I care, and I’m not scared

coffee’s poor mans’ lithium

if you’re lucky you live in a part of the world where there’s plenty in the ground water, naturally.

Wrong, coffee is about 3x more expensive than lithium per month.

Reply Quote

Date: 14/03/2019 10:07:09
From: transition
ID: 1359257
Subject: re: Microwaving batteries

poikilotherm said:


transition said:

dv said:

Sunday morning is everyday for all I care, and I’m not scared

coffee’s poor mans’ lithium

if you’re lucky you live in a part of the world where there’s plenty in the ground water, naturally.

Wrong, coffee is about 3x more expensive than lithium per month.

chuckle

Reply Quote

Date: 14/03/2019 10:21:29
From: Michael V
ID: 1359265
Subject: re: Microwaving batteries

poikilotherm said:


transition said:

dv said:

Sunday morning is everyday for all I care, and I’m not scared

coffee’s poor mans’ lithium

if you’re lucky you live in a part of the world where there’s plenty in the ground water, naturally.

Wrong, coffee is about 3x more expensive than lithium per month.

Government subsidised?

Reply Quote

Date: 14/03/2019 10:35:19
From: poikilotherm
ID: 1359270
Subject: re: Microwaving batteries

Michael V said:


poikilotherm said:

transition said:

coffee’s poor mans’ lithium

if you’re lucky you live in a part of the world where there’s plenty in the ground water, naturally.

Wrong, coffee is about 3x more expensive than lithium per month.

Government subsidised?

No, even privately it’s still cheaper. E.g Nescafe 500g (ugh) is ~$20 for 500g (about a month for those with no taste such as smokers), a bottle of 200 lithium tablets is ~$16.5

Reply Quote

Date: 14/03/2019 14:42:50
From: transition
ID: 1359382
Subject: re: Microwaving batteries

pizza shortly, when lady gets back from shopping

coffee landed

Reply Quote

Date: 14/03/2019 17:47:58
From: mollwollfumble
ID: 1359461
Subject: re: Microwaving batteries

poikilotherm said:


Michael V said:

poikilotherm said:

Wrong, coffee is about 3x more expensive than lithium per month.

Government subsidised?

No, even privately it’s still cheaper. E.g Nescafe 500g (ugh) is ~$20 for 500g (about a month for those with no taste such as smokers), a bottle of 200 lithium tablets is ~$16.5

Mind if i quote you on that next time the topic comes up for discussion?

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Date: 14/03/2019 17:50:46
From: roughbarked
ID: 1359464
Subject: re: Microwaving batteries

mollwollfumble said:


poikilotherm said:

Michael V said:

Government subsidised?

No, even privately it’s still cheaper. E.g Nescafe 500g (ugh) is ~$20 for 500g (about a month for those with no taste such as smokers), a bottle of 200 lithium tablets is ~$16.5

Mind if i quote you on that next time the topic comes up for discussion?

mind, less than 50% of the sample are smokers.

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