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Electrical Question About Rechargeable Batteries
Topic Started: Nov 18 2008, 07:40 AM (192 Views)
Qaanaaq-Liaaq
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Senior Carp
Let’s say you have a portable electrical device that has a rechargeable battery in it. You can use it by either plugging it in to household current or not plugging it in to household current in which case the battery powers it.

If the rechargeable battery goes dead and can’t be recharged any longer, should the device still be able to be used with household current? In other words, if the battery is dead, will it block household current from powering it? This appears to be what's happened to my Braun shaver.

Me QAANAAQ, you NOT.

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QuirtEvans
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I Owe It All To John D'Oh
It probably depends on the device.

I have an older laptop where the battery died. When the battery was in, the computer still worked, but it kept freezing up. Turns out, the laptop was checking the battery over and over and over ... the solution was to take the battery out and leave the laptop plugged in, sans battery. Since I did that, the computer has worked just fine.

I can't tell you whether the same solution would work for other devices.
It would be unwise to underestimate what large groups of ill-informed people acting together can achieve. -- John D'Oh, January 14, 2010.
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Klaus
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HOLY CARP!!!
Using electrical shavers is soooo 2007.

If you want to be en vogue you have to be more creative. You don't need no stinkin shaver!

Posted Image
Trifonov Fleisher Klaus Sokolov Zimmerman
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JBryan
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I am the grey one
You shave by setting your chair on fire?
"Any man who would make an X rated movie should be forced to take his daughter to see it". - John Wayne


There is a line we cross when we go from "I will believe it when I see it" to "I will see it when I believe it".


Henry II: I marvel at you after all these years. Still like a democratic drawbridge: going down for everybody.

Eleanor: At my age there's not much traffic anymore.

From The Lion in Winter.
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Kincaid
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HOLY CARP!!!
1. I actually saw a TV clip about a barber that shaved using fire - I can't recall how he protected the patron's hair, but he just did a quick flame by the face of the patron and it left him with a completely smooth face, no stubble, no irritation, etc. Looked pretty cool but the flame was MUCH smaller than the above pic.

2. I am surprised that the shaver would function like that, unless it is doing something like Quirt says or the rechargeable battery chemicals are so completely inert that electrons can't pass thru it (hey, I'm not an electrical engineer). I use a Braun and when the battery dies I can plug it in and use it to finish up before letting it sit to recharge.
Kincaid - disgusted Republican Partisan since 2006.
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Klaus
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HOLY CARP!!!
Shaving with fire is a proven method

http://www.youtube.com/watch?v=jJ47lWGKjRw
Trifonov Fleisher Klaus Sokolov Zimmerman
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big al
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Bull-Carp
Are you sure that it's the batteries? If the charger and the AC adapter are one and the same device, it may have failed and is neither charging the batteries nor running the shaver.

Big Al
Location: Western PA

"jesu, der simcha fun der man's farlangen."
-bachophile
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Qaanaaq-Liaaq
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Senior Carp
Thank you, QuirtEvans and big al.

I replaced the dead rechargeable battery with a new one and now it's working fine. Still, I think that if something is designed to work with either household current OR a rechargeable battery, then it should work with household current REGARDLESS of what the state of the battery is.

Me QAANAAQ, you NOT.

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