Re: N900 Wireless Charging
A naive question here: can a charger like that be applied directly to the battery and bypass the N900's USB charging circuit altogether, as per sixwelledbeast's post #2? I too would like to keep my phone intact but I would not mind sacrificing one of my many spare batteries for the experiment.
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Re: N900 Wireless Charging
Speaking of huge... Mind the size of the pad. Some are wider than the N900. Consider orientation and dimensions when making your selection as well. ;)
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Re: N900 Wireless Charging
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Re: N900 Wireless Charging
Thanks Woody, that's exactly where I was heading with that question. I would not expect to connect the receiver's contacts directly to the battery contacts. But, assuming some magic circuit between the two, would the phone's firmware be able to cope with it? Reporting the correct charge, for example?
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Re: N900 Wireless Charging
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Re: N900 Wireless Charging
AFAIK the Touchstone only works with Touchstone chargers. Are you seeing another brand in the wild for public use similar to free WiFi?
I did get an email from Estel on a BME trick for enabling charging in software though it seems that it enables a dumb high draw mode which would possibly undervolt the charging system. Quote:
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Re: N900 Wireless Charging
BTW, are the two contact points of a qi receiver a D+ and D-?
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Re: N900 Wireless Charging
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Be very sure to know what you are doing as the pins that are accessible underneath the battery do not have any protection circuits, iirc. See also a link to a post by joergrw in the thread I linked before. Also have a look at the USB pin-out. In the end, you do this all on your own risk and responsibility. There may be many subtle pitfalls that may result in sub-optimal behavior or even worse, e.g., components getting hot or the battery not being fed with the right current/voltage may even result in fire or the like. As another example: voltage drops at components you put in the circuit may result in a too low voltage for charging etc. So, while there are reports of working configurations, in the end, everyone does this on her/his very own and may experience widely varying results. So, to repeat: be sure to know what you do and be aware that you do this on your own responsibility. |
Re: N900 Wireless Charging
Yep I read all and a lot about USB today, because currently I'd have to take out my battery to charge it. So I've been finding different ways to charge the battery, from repairing the micro-usb, to creating a new usb connection and wireless charging. So far it seems like Touchstone is the safest, although it only works with it's own charger. So if that charger goes missing, I'm doomed and have to order another charger. Creating a new usb connection seems interesting enough, but I'd really like to implement wireless charging. Not sure to go with qi, or touchstone.
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Re: N900 Wireless Charging
Akkumaru, is there a more common charger that you are finding compared to Touchstone?
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