Solution: N900 Charging from dumb power sources *UPDATED* - Page 4 - maemo.org

Active Topics

Firefox with Leste (10)
to Maemo 7 / Leste by teroyk - 3 days ago
more...

Page 4 of 13

Thread Tools

tokuro	2009-12-30 , 05:46
Posts: 44 \| Thanked: 4 times \| Joined on Oct 2009 @ WA, USA	#31

Originally Posted by jackburton

For anybody who doesn't want to hack anything together, I have found another solution. Get a Motorola SKN6252 mini-usb to micro-usb adapter. Then use a regular A to mini-b USB cable from the dumb charger. I have verified this to work. I got the adapter from Amazon http://www.amazon.com/Micro-Adapter-.../dp/B000IBLD3E. I am using this 'shorty' cable from Cyberguys.com: http://www.cyberguys.com/product-det...roductid=10030.

Here is an action shot:
http://www.flickr.com/photos/brandersnaxe/4227462726/

I have SKN6252 and it does not make my dumb mini USB chargers work with n900. I have about 8+ of those and only 1 works with N900 using SKN6252.

Quote & Reply |

twoboxen	2009-12-30 , 16:02
Posts: 258 \| Thanked: 138 times \| Joined on Oct 2009 @ St. Louis, MO, USA	#32

Originally Posted by tokuro

I have SKN6252 and it does not make my dumb mini USB chargers work with n900. I have about 8+ of those and only 1 works with N900 using SKN6252.

Thanks for this. This is exactly what I suspected. Shorting the pins is the only for-sure answer.

Quote & Reply |

	mikec	2009-12-30 , 19:30
	Posts: 1,366 \| Thanked: 1,185 times \| Joined on Jan 2006	#33

Just shorted the center pins on my cheapie cig lighter usb adaptor and it now works like a charm. Charging using the supplied n900 usb cable. Many thanks for this.

Mike C

__________________
N900_Email_Options Wiki Page

Quote & Reply |

guy2die4	2009-12-30 , 19:34
Posts: 30 \| Thanked: 6 times \| Joined on Dec 2009 @ Dubai	#34

is there a way to short the centre pins without a solder iron?

Quote & Reply |

	mikec	2009-12-30 , 20:12
	Posts: 1,366 \| Thanked: 1,185 times \| Joined on Jan 2006	#35

Originally Posted by guy2die4

is there a way to short the centre pins without a solder iron?

Not safely. You have got +5v and ground on either side. Shorting these may not be good.

__________________
N900_Email_Options Wiki Page

Quote & Reply |

tennis_player	2009-12-30 , 20:46
Posts: 3 \| Thanked: 0 times \| Joined on Dec 2009	#36

I've found this cable that seems to be just what we need to charge our n900. I purchased it based on the "bad" reviews which in our case is exactly what we need. So charge only, no sync.

http://www.bestbuy.com/site/Rocketfi...1MRA&cp=1&lp=1

I have a zagsparqq that only worked occasionally with the provided cable, with this cable it worked right away. You can find it on ebay for much cheaper. Hope this helps.

Quote & Reply |

woodyear99	2009-12-30 , 22:45
Posts: 318 \| Thanked: 49 times \| Joined on Nov 2009	#37

I have a ac adapter with a usb port on it. I was just wondering if it is safe to use with the supplied usb cable as a second charger.

It says output dc 5v max: 1000ma min: 150 ma

Would this be safe to use with my n900?

Hmm I plugged it in, it workd, but do you think this could damage my n900 in any way?

Attached Images

Last edited by woodyear99; 2009-12-30 at 23:06.

Quote & Reply |

TA-t3	2009-12-31 , 13:47
Posts: 3,841 \| Thanked: 1,079 times \| Joined on Nov 2006	#38

It depends on the quality of the charger. It's difficult to tell without checking it out with instruments. But if you can get your hands on a multimeter and measure its voltage it could give an indication. If it provides between 5V and 5.2V or so, and not something wildly different, then it may be OK. No guarantees though. Many China-made chargers are total rubbish, while others are completely fine. If it was provided as part of a kit with some decent, well-known product, then it's probably OK as well.

__________________
N800/OS2007|N900/Maemo5
-- Metalayer-crawler delenda est.
-- Current state: Fed up with everything MeeGo.

Quote & Reply |

The Following User Says Thank You to TA-t3 For This Useful Post:
inidrog

woodyear99	2009-12-31 , 15:38
Posts: 318 \| Thanked: 49 times \| Joined on Nov 2009	#39

Nah actually it was a cheap chinese kit I ordered off ebay for my sansa mp3 player. I just may skip using it with my n900, not taking any chances on this one lol. Will try to purchase another usb cable instead.

Quote & Reply |

jeffsf	2009-12-31 , 16:16
Posts: 44 \| Thanked: 24 times \| Joined on Dec 2009 @ San Francisco	#40

Originally Posted by cheeze[it]

wow, I hope I don't have an issues with my power block. I just ordered this:Zagg Sparq I was planning to use it to charge multiple device and also hoped it would charge the N900 on the go. So I guess I'll just cross my fingers and hope for the best =(

It does NOT charge the N900 -- on 20-40 min hold with Zagg to see how they intend to resolve.

Quote & Reply |