battery not charging

[Anuj Sawani]

Hi,

I tried out the suggestions mentioned in your previous mail:
- Left the battery out for longer than 30 minutes
- Used a Desktop to charge for more than 6 hours.

Unfortunately, the battery is still dead. I am now suspecting the charging circuit or possibly the battery has gone into a highly deep discharge state.

I'll probably get hold of a digital multimeter and check the voltages being delivered to the battery.

Any other suggestions are always welcome.

Thanks,
Anuj
----- Original Message ----
From: Michael Shiloh <michael at openmoko.org>
To: device-owners at lists.openmoko.org
Sent: Thursday, January 17, 2008 7:15:17 PM
Subject: Re: battery not charging




Anuj Sawani wrote:
> 
> I usually leave the battery out for around 10 minutes with the USB
 cable 
> disconnected.

I suggest trying again for a longer time, perhaps 30 minutes. I don't 
know that 30 minutes are required, but I do know that when I do this, I
 
usually forget and don't get back to that project for much longer than 
10 minutes.


> 
> I am using a Dell laptop to charge it. I presume they have not
 modified 
> the USB standard for power-saving reasons. But, could the laptop be
 an 
> issue? I have tried different USB ports on the laptop too.

Might be. I have been suspicious of this sometimes. Do you have a 
desktop handy?


> 
> Is there a possibility that the battery is deeply discharged into an 
> unrecoverable state?

Possible, but I've handled well over a dozen batteries by now and have 
yet to see one fail this way. Not to say it's impossible.

Where are you located?

Michael


> 
> Thanks!
> Anuj
> 
> ----- Original Message ----
> From: Nick Guenther <kousue at gmail.com>
> To: Anuj Sawani <xeonclub at yahoo.com>
> Cc: device-owners at lists.openmoko.org
> Sent: Thursday, January 17, 2008 5:14:44 PM
> Subject: Re: battery not charging
> 
> On Jan 17, 2008 3:05 PM, Anuj Sawani <xeonclub at yahoo.com 
> <mailto:xeonclub at yahoo.com>> wrote:
>  >
>  > Hi all,
>  >
>  > The battery that came with my Neo went into a deep discharge state
 
> and now
>  > refuses to charge. I followed the steps at
>  > http://wiki.openmoko.org/wiki/Neo1973_Battery_Charger and left it 
> connected
>  > overnight. I have tried this a few times too but the phone does
 not 
> turn on
>  > at all.
> 
> Did you really really make sure to leave the battery out for a long
> time (and disconnect the USB cable, just to be sure (not that the neo
> can power itself direct from USB--which is kind of sad)) before
 trying
> to charge it?
> What are you trying to charge it from? Are you sure it is
> USB-compliant (i.e. provides 100mA at all times)?
> 
> -Nick
> 
> 
> 
> Be a better friend, newshound, and know-it-all with Yahoo! Mobile.
 Try 
> it now. 
>
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>  >







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