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Posts: 37 | Thanked: 8 times | Joined on Nov 2009
#21
There is a "handshake" of sorts going on. USB cables have four conductors: a power pair (5v/gnd) and a signal pair (D+/D-).

Shorting the signal wires is the (standard?) way to signal the presence of a dumb charger capable of sourcing at least 500mA. I'd wager that the N900 uses this to decide if it can sink charging current from your external sources. Cut open a spare USB cable, short the data lines (inner pair), and see if your charging problem is fixed.

If you have a multimeter, you can confirm if the official Nokia charger does this internally by measuring the resistance between the data pairs. The charger can be unplugged prior to probulation.

Sadly, I can't test any of this myself, 'cos I'm still waiting for Dell to ship my phone.
 

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Posts: 87 | Thanked: 53 times | Joined on Nov 2009 @ United Kingdom
#22
Originally Posted by blue13x View Post
Try item 7: http://thenokiaguide.com/2009/12/06/...n900-part-2-2/

6000 mah of power, CRAZY!
I wonder how many times can you charge that??? 500 times?

I know the Xpal Power https://www.xpalpower.com/ is 500 times only
and the Eneloop mobile boosters is 1000 times
 
Posts: 40 | Thanked: 2 times | Joined on Dec 2009
#23
I don't have any issue like you all ....works right out of the box even with car charger though it takes abit longer than home charger.I can feel your pain !
 
Posts: 562 | Thanked: 123 times | Joined on Nov 2009 @ Daly City
#24
so, is zaggsparq will work with n900?..
 
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#25
Originally Posted by chase15 View Post
so, is zaggsparq will work with n900?..
works for me.
 
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#26
I apologize in advance if this is the wrong board to post but Zagg.com offers 50% today ONLY (ZAGGsparq)
 

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Posts: 57 | Thanked: 8 times | Joined on Jan 2007 @ UCNJ
#27
Originally Posted by chase15 View Post
so, is zaggsparq will work with n900?..
Not for me. BTW the zaqsparq is also 6000mah. At 50% off quite a deal.
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Posts: 74 | Thanked: 9 times | Joined on Dec 2009 @ Oxford , England
#28
Anyone had experiance of a Powermonkey explorer working with the N900 ?
 
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Posts: 124 | Thanked: 47 times | Joined on Aug 2008 @ Northern DFW
#29
I've just picked up a Solio Mono from REI (I can't seem to travel within a few miles of an REI without buying something) and it seems to charge the n900 without any issues. It was $49.99 retail, has a 1000mah internal battery, and charges via solar or USB.
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#30
Originally Posted by damageinc View Post
I apologize in advance if this is the wrong board to post but Zagg.com offers 50% today ONLY (ZAGGsparq)
Thanks for the heads-up! I ordered one along with an invisible shield. Even if it turns out that it won't work with the N900 natively (we have conflicting reports here in this thread), I've got the nokia adapters on the way that should bridge the gap, so I'm good either way.

Cheers!
 
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