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Druzyek
Joined: 02 Feb 2010
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 Posted: Sun Jun 13, 2010 4:01 pm Post subject: Voltage Question |
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| I bought a Korean mp3 player. It came with an adapter so that I can hook my USB cable to an electrical outlet so that it charges faster. I have an American eBook reader that comes with a similar adapter for American outlets. Is there any chance of damaging my eBook reader if I use the Korean adapter to charge it? I assume not since it is USB but I wanted to double-check. |
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HalfJapanese
Joined: 02 Feb 2010
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| Posted: Sun Jun 13, 2010 4:16 pm Post subject: |
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| So both the Korean MP3 Player and eBook Reader are charged via USB cable? Most USB connections output 5v and the Korean Adapter probably converts the 240V A/C to 5V D/C. Is this what the adapter saids? Do the eBook reader have something written on it about 5V? |
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ttompatz
Joined: 05 Sep 2005
Location: Kwangju, South Korea
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| Posted: Sun Jun 13, 2010 5:08 pm Post subject: Re: Voltage Question |
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| Druzyek wrote: |
| I bought a Korean mp3 player. It came with an adapter so that I can hook my USB cable to an electrical outlet so that it charges faster. I have an American eBook reader that comes with a similar adapter for American outlets. Is there any chance of damaging my eBook reader if I use the Korean adapter to charge it? I assume not since it is USB but I wanted to double-check. |
Read the labels on the transformers.
If they both say OUTPUT 5VDC then you are good as gold. |
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Underwaterbob
Joined: 08 Jan 2005
Location: In Cognito
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| Posted: Sun Jun 13, 2010 5:38 pm Post subject: |
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If it's a generic wall USB charger, you shouldn't have any trouble; however, it may be a kind of proprietary charger: some USB devices are designed to accept a higher voltage so they can charge faster. If it is a proprietary device, you can buy a generic wall socket USB charger for your eBook reader for a pittance in many electronic stores.
Here's one on Gmarket. |
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Druzyek
Joined: 02 Feb 2010
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| Posted: Sun Jun 13, 2010 7:32 pm Post subject: |
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| The both say 5V DC. The Korean one is 1000mA and the American is 850mA if that makes a difference. |
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Who's Your Daddy?
Joined: 30 May 2010
Location: Victoria, Canada.
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| Posted: Sun Jun 13, 2010 7:51 pm Post subject: |
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| If the electronic item is sold in Korea, you could probably buy a "replacement" cord from the local dealer. Type you product name into gmarket.com and you should see these. |
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HalfJapanese
Joined: 02 Feb 2010
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| Posted: Sun Jun 13, 2010 8:23 pm Post subject: |
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| Druzyek wrote: |
| The both say 5V DC. The Korean one is 1000mA and the American is 850mA if that makes a difference. |
According to the information I read from the links below, if the voltages on the adapter and the device are the same, then it is probably okay to use for charging. As for the mA (milliamps/current), the devices draw a specified max amount of current from the adapter, so an adapter that has the potential to draw more amps than the device can should be fine to use. However, if the adapter does not output enough amps that the device needs to function, you can still charge the device, but not use the device on a dead battery while charging (until the battery is partially charged). In some cases the adapter's transformer can be damaged (not the device itself), if the device tries to pull more current than the adapter can output.
http://answers.yahoo.com/question/index?qid=20080102162151AAd67qM
http://www.societyofrobots.com/robotforum/index.php?topic=4920.0
Another interesting site about battery charging/care:
http://www.batteryuniversity.com/ |
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Druzyek
Joined: 02 Feb 2010
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| Posted: Mon Jun 14, 2010 3:02 am Post subject: |
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Thanks, everyone, for the replies.
@Who's Your Daddy, it is a nook ebook reader sold only in the US right now so I can't buy a replacement part.
@HalfJapanese, if I understand you right I should be fine since the Korean adapter supplies more amperage than the American adapter it was originally designed to work with. |
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ttompatz
Joined: 05 Sep 2005
Location: Kwangju, South Korea
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| Posted: Mon Jun 14, 2010 4:01 am Post subject: |
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| Druzyek wrote: |
Thanks, everyone, for the replies.
@Who's Your Daddy, it is a nook ebook reader sold only in the US right now so I can't buy a replacement part.
@HalfJapanese, if I understand you right I should be fine since the Korean adapter supplies more amperage than the American adapter it was originally designed to work with. |
that would be correct. |
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