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CafeDiva
Posts: 13
Registered: ‎04-15-2010
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Overcharging Battery

I have a question about charging the battery.  I have heard that it is (and is not) possible to overcharge the battery.  Yesterday, someone in my store called tech support and the specialist said that if you overcharge the battery, it discharges completely.  On a separate call, we heard that it was not possible to overcharge.  Has anybody heard a "definitive" answer?

Currently recommending: Black Iced Tea Lemonade with one pump of Raspberry Syrup
Doug_Pardee
Posts: 5,521
Kudos: 4,013
Registered: ‎03-09-2010
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Re: Overcharging Battery

All lithium rechargeable batteries contain safety circuits to prevent them from overcharging. If you watch your NOOK, the charge light goes out when it's done charging. In addition, the charging circuits for lithium batteries are designed to not be able to provide enough voltage to overcharge the battery.

 

Of course, in theory this could all go wrong, and that would be a Bad Thing. As in, I hope nobody was too close to the battery, and that the fire department is on its way.

 

So there you are. In theory, overcharging is a bad thing. In practice, it's almost impossible to occur.

 

Inspired Wordsmith
icebike
Posts: 4,434
Registered: ‎11-30-2009
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Re: Overcharging Battery

[ Edited ]

 

CafeDiva wrote:

I have a question about charging the battery.  I have heard that it is (and is not) possible to overcharge the battery.  Yesterday, someone in my store called tech support and the specialist said that if you overcharge the battery, it discharges completely.  On a separate call, we heard that it was not possible to overcharge.  Has anybody heard a "definitive" answer?

 

 

See the FAQ:  http://www.barnesandnoble.com/nook/support/?bnit=H&cds2Pid=30195

 

Under Getting Started and FAQ:

Scroll Down to Hardware

(Show all)

Read point number 7:

 

Q: Can my NOOK be overcharged by leaving it connected to a power outlet overnight?

 

A: No, your NOOK cannot be overcharged. It is okay to leave your NOOK connected to a power outlet overnight. Just be sure that your NOOK is not turned off after connecting it to the power outlet to be charged. Your NOOK should be left in sleep mode while charging.

 

 

Contributor
CafeDiva
Posts: 13
Registered: ‎04-15-2010
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Re: Overcharging Battery

Well it makes sense that you can't overcharge it.  I don't think any modern electronics fail to have the safety-circuits to prevent overcharge.  I just figured if tech support told me it WAS possible, then perhaps they knew something I didn't.

Currently recommending: Black Iced Tea Lemonade with one pump of Raspberry Syrup
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