[Reader-users] battery life

Tue Apr 15 15:12:42 CDT 2008

Although not as crucial with lithium batteries as with the nickel 
cadnium, they still should be discharged completely now and then. The 
problem is customers are demanding smaller cell phones, so the batteries 
are also smaller, and can't provide as much power as when the phones 
were bigger.

tribble wrote:
> I think the reason the answers vary may be that technology going into 
> various types of batteries evolves over time -- maybe the newer batters, 
> which are smaller than those in phones just a couple years ago, are either 
> more disposable or have longer lives.  I speak speculatively as I don't know 
> much about battery technology.  But some 15 years ago when I bought a 
> cam-corder, the instructions on the battery (which was huge) said that the 
> battery should be drained of all charged at least periodically to eliminate 
> degradation of performance -- there was even a hot switch on the charger 
> that did nothing but drain the battery of any remaining charge, which tool 
> several minutes, and when that was done, it would take overnight to recharge 
> it.
> I forget if that was a nickel cadmium battery or lithium or whatever.
> Cheers.
> --le
> 
> ----- Original Message ----- 
> From: "Gary Wunder" <gwunder at earthlink.net>
> To: "Kurzweil National Federation of the Blind Reader user list" 
> <reader-users at nfbnet.org>
> Sent: Monday, April 14, 2008 9:14 PM
> Subject: Re: [Reader-users] battery life
> 
> 
> If we are talking about lithium-ion batteries, I think that as much as
> anything the battery life is dependent upon the passage of time. I think
> that in the small print that most manufacturers send with these kind of
> batteries, you find that they have from 18 to 24 months of adequate
> performance from the time of manufacture. How often you charge or whether
> you wait until the battery is almost fully discharged is probably of less
> consequence than the actual age of the battery.
> 
> Gary
> 
> 
> ----- Original Message ----- 
> From: "Charlie Richardson" <charlieofalbany at hotmail.com>
> To: "Kurzweil National Federation of the Blind Reader user list"
> <reader-users at nfbnet.org>
> Sent: Monday, April 14, 2008 8:41 PM
> Subject: Re: [Reader-users] battery life
> 
> 
>> Depends on who you talk to.  I've heard that rechargeable batteries have a
>> certain number of times they can be recharged before the battery won't
>> hold
>> a charge.  Some say that number is 400 times.  Using this logic if you
>> recharge your battery every day even if it doesn't need it you will need a
>> new battery in a little over a year, but if you can avoid recharging for 2
>> or 3 days, it will last 2 or 3 times longer.
>>
>> I believe myself that if my battery is three quarters full and I recharge
>> it, it doesn't take much to do it and probably hasn't worn the battery as
>> much as if I had recharged it from one quarter.
>>
>> Like I said before I'm a heavy user and usually recharge every day whether
>> it needs it or not and didn't need to buy a second battery for my other
>> phone until after the second year of use.
>>
>> So, like I said, it depends on who you talk to.
>>
>> ----- Original Message ----- 
>> From: "Alan & Terrie Robbins" <arobbin1 at nycap.rr.com>
>> To: "Kurzweil National Federation of the Blind Reader user list"
>> <reader-users at nfbnet.org>
>> Sent: Monday, April 14, 2008 5:16 AM
>> Subject: Re: [Reader-users] battery life
>>
>>
>>> Regarding charging of the batter, is it better to let the battery run as
>>> low
>>> as possible and then charge or simply keep it plugged in charging when
>>> not
>>> in use or at least each night?
>>>
>>> Al
>>>
>>> -----Original Message-----
>>> From: reader-users-bounces at nfbnet.org
>>> [mailto:reader-users-bounces at nfbnet.org]On Behalf Of Sachin Pavithran
>>> Sent: Sunday, April 13, 2008 11:38 PM
>>> To: 'Kurzweil National Federation of the Blind Reader user list'
>>> Subject: Re: [Reader-users] battery life
>>>
>>>
>>> That's interesting, I use my phone quite a bit, for reading, emailing,
>>> texting and for phone calls and the most I've had to charge it was every
>>> other day.  I've had it go for almost 4 and a half days when I didn't use
>>> it
>>> as much.
>>>
>>> Cheers.
>>>
>>> Sachin
>>>
>>> -----Original Message-----
>>> From: reader-users-bounces at nfbnet.org
>>> [mailto:reader-users-bounces at nfbnet.org] On Behalf Of tribble
>>> Sent: Saturday, April 12, 2008 10:14 PM
>>> To: Kurzweil National Federation of the Blind Reader user list
>>> Subject: [Reader-users] battery life
>>>
>>> Hi again all --
>>> I just wanted to comment on the battery life I have experienced with the
>>> mobile reader.  Essentially, using the phone as a cell phone and reader,
>>> I
>>> have it talking quite a bit during the day and I find I need to recharge
>>> it
>>> every 24 hours.  This is kind of often in my view -- I think of a cell
>>> phone
>>> lasting 4-7 days without a charge, but the mobile reader obviously has to
>>> work harder than the average phone.
>>> I also have the volume at or near maximum as I am hard of hearing (wear
>>> hearing aids).  Anyway, I'd be very interested in what other people have
>>> experienced with the reader.
>>> Thanks and happy reading!
>>> --le
>>>
>>> _______________________________________________
>>> Reader-users mailing list
>>> Reader-users at nfbnet.org
>>> http://www.nfbnet.org/mailman/listinfo/reader-users
>>>
>>> _______________________________________________
>>> Reader-users mailing list
>>> Reader-users at nfbnet.org
>>> http://www.nfbnet.org/mailman/listinfo/reader-users
>>>
>>> _______________________________________________
>>> Reader-users mailing list
>>> Reader-users at nfbnet.org
>>> http://www.nfbnet.org/mailman/listinfo/reader-users
>>>
>> _______________________________________________
>> Reader-users mailing list
>> Reader-users at nfbnet.org
>> http://www.nfbnet.org/mailman/listinfo/reader-users
>>
>>
>> -- 
>> No virus found in this incoming message.
>> Checked by AVG.
>> Version: 7.5.519 / Virus Database: 269.22.13/1377 - Release Date:
>> 4/14/2008 9:26 AM
>>
>>
> 
> _______________________________________________
> Reader-users mailing list
> Reader-users at nfbnet.org
> http://www.nfbnet.org/mailman/listinfo/reader-users 
> 
> _______________________________________________
> Reader-users mailing list
> Reader-users at nfbnet.org
> http://www.nfbnet.org/mailman/listinfo/reader-users