aspergers and vaping.

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Robert Cromwell

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The only battery that ever caused a fire that I witnessed, was in the server room at a school I was working at as a campus tech. It was a huge APC UPS battery and there was smoke billowing out from under the server/switch room. I had to run in with the Science Teacher's fire gloves and yank the cord out of the wall while the maintenance guy used the fire extinguisher to put the fire out. We had a school full of junior high kids and it couldn't wait for the fire department. That thing melted all the cords that were plugged into it, and we lost 3 hub/switches that networked 10 classrooms. Scary.
those things have lead acid batteries in them. It was likley not the batteries that aused the problem but a transformer or something that overheated and burned. Lead acid batteries do not burn, they give off hydrogen gas that can explode though :shock:
 
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Atchafalaya

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those things have lead acid batteries in them. It was likley not the batteries that aused the problem but a transformer or something that overheated and burned. Lead acid batteries do not burn, they give off hydrogen gas that can explode though :shock:
I used to replace the smaller batteries and they were always warped. Sometimes really difficult to get out of the APC. Not sure what kind of batteries they were, but I'd never buy one of those for my house now. :eek:
 

Robert Cromwell

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I used to replace the smaller batteries and they were always warped. Sometimes really difficult to get out of the APC. Not sure what kind of batteries they were, but I'd never buy one of those for my house now. :eek:
I have worked with several APC backup power units and all of them had sealed gel cell lead acid batteries in them. Maybe not now but I expect that they still do. the size/cost/power by volume is much better for lead acid batteries.
If the batteries only have 2 leads on them they are pretty much guaranteed to be lead acid.
LiPo's generally have separate charge leads and many have temp sensors in them.
 
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Atchafalaya

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I have worked with several APC backup power units and all of them had sealed gel cell lead acid batteries in them. Maybe not now but I expect that they still do. the size/cost/power by volume is much better for lead acid batteries.
If the batteries only have 2 leads on them they are pretty much guaranteed to be lead acid.
LiPo's generally have separate charge leads and many have temp sensors in them.
Yes this was 11 years ago and had 2 leads. So glad I don't have to mess with them anymore.
 

Atchafalaya

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Yes this was 11 years ago and had 2 leads. So glad I don't have to mess with them anymore.
This is what the bigger ones looked like.
upload_2015-10-15_10-45-39.png
 

Robert Cromwell

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Yep lead acid and those were not changed out when they should have been. old/dead sealed lead acid batteries will overheat while charging and deform/swell up. If a power outage they would not have worked but for a minute or two if at all.
A power backup should have preventive maintenance or it will not work at all when needed most. APC batteries should be changed out at least every 2 years.
 
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Atchafalaya

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Yep lead acid and those were not changed out when they should have been. old/dead sealed lead acid batteries will overheat while charging and deform/swell up. If a power outage they would not have worked but for a minute or two if at all.
A power backup should have preventive maintenance or it will not work at all when needed most. APC batteries should be changed out at least every 2 years.
I have no idea how long those things weren't changed out. Most of them weren't even working anymore. When I got to that campus it was a mess. I think I replaced around 300 batteries!
 

AXIOM_1

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    That looks amazing! :drool:

    I'm not a sweet eater (I'm a salty crunchy person. Gimme chips!) but my weakness is baked apple desserts. OMG and toffee and caramel with apple?!?! Heaven in a pie.

    yeah, I always knew you are salty ... Din't know you are crunchy though :w00t:

    I like all kinds of snacks/foods, with salty and sweet.... I like my chips but I also like my chocolate.... Just don't get around me with cheesecake because I will eat most of it and none will be left for anyone else :)
     
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