Re: [Braillenote] PK question

Tue, 13 Nov 2007 15:30:05 -0800 

Ah I see what you mean, thanks.
----- Original Message ----- From: "Kevin Chao" <[EMAIL PROTECTED]> To: "Chris Hallsworth" <[EMAIL PROTECTED]>; "Joseph Lee" <[EMAIL PROTECTED]>; "'Catherine Turner'" <[EMAIL PROTECTED]> 
Cc: <[email protected]>
Sent: Tuesday, November 13, 2007 11:26 PM
Subject: Re: [Braillenote] PK question



Chris,
This is because the gauge is based off of pure voltage. When the AC Adapter is plugged in, there is enough voltage going in that the gauge is reporting 100%. 

Kevin
----- Original Message ----- From: "Chris Hallsworth" <[EMAIL PROTECTED]> To: "Kevin Chao" <[EMAIL PROTECTED]>; "Joseph Lee" <[EMAIL PROTECTED]>; "'Catherine Turner'" <[EMAIL PROTECTED]> 
Cc: <[email protected]>
Sent: Tuesday, November 13, 2007 3:24 PM
Subject: Re: [Braillenote] PK question
Hi, so why does the PK always report 100% when it's plugged in, even though the battery itself is not at 100%? Is this because of how the battery works? Curious minds wants to know <smiles>. Thanks in advance. ----- Original Message ----- From: "Kevin Chao" <[EMAIL PROTECTED]> To: "Joseph Lee" <[EMAIL PROTECTED]>; "'Catherine Turner'" <[EMAIL PROTECTED]> 
Cc: <[email protected]>
Sent: Tuesday, November 13, 2007 11:17 PM
Subject: Re: [Braillenote] PK question



I won't go into the details of the PK's battery and how it works.
If you received your unit at 95% then there won't be any harm in using it right out of the box. The PK will last longer than the mPower and you should get really close to 20 hours of usage before the battery reports critical or the unit shuts itself off. The gague will jump +-10% meaning that the battery may really be at 90% but it may report 80% or 100%. I personally would let the unit run down to 20-40% before charging it up, but there won't be any harm in charging it sooner. A full charge from 0% to 100% takes just a little over an hour. Something to keep in mind when charging the PK is that it will always report 100% when plugged in, what I do is just leave it pluggede it in for at least 1.5 hours before taking it off the charge. In order to see what the gague really is at, it is required to unplug the AC Adapter. 

Kevin
----- Original Message ----- From: "Joseph Lee" <[EMAIL PROTECTED]> 
To: "'Catherine Turner'" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Tuesday, November 13, 2007 3:07 PM
Subject: RE: [Braillenote] PK question



Hi Catherine,
The PK's battery, unlike other products on the BN family, uses different charging/discharging techniques. Whereas mPower's Nickel Metal Hydride (NiH) 
batteries use gauge monitor to display power status, PK uses battery's
current voltage to measure battery power. I'd say, unless other PK users say it otherwise, that it is recommended that you charge your unit for about two 
hours before using it. And, remeber, while using your PK, if "Power and
Battery status" gives you wird reading such as 60% after using it for about an hour, don't worry, as the battery volatabe may change during discharge 
and the battery is not really at 60%, but rather around 95%.
Cheers,
Joseph P.S. Even though I'm learning Physics at school, I cannot really
explain why PK's Lithium Ion battery relies on voltage alone (well, someone 
will explain).

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Catherine
Turner
Sent: Tuesday, November 13, 2007 6:35 AM
To: BrailleNote
Subject: [Braillenote] PK question

Hi,

I received my PK today and am going through the tutorial at the moment.
I've got a question about the battery. I had assumed that as it was new I would need to charge the unit for quite some time before being able to use 
it.  But I've switched it on and it says the battery is at 94%.  In the
manual and so far in the tutorial I haven't found mention of charging the unit for the first time - so I just wanted to check - is it ok to just use 
it straight away like this without charging it?  And is there any
recommendation in terms of running the battery down each time before
charging it?

Thanks,
Catherine
**
Read, ruminate and rant with me - visit my blog:
http://catherineturner.wordpress.com
Life, the universe and technology titbits


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Chris Hallsworth
BrailleNote mPower User
Website: www.chrishallsworth.co.nr






Chris Hallsworth
BrailleNote mPower User
Website: www.chrishallsworth.co.nr 

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