Just got my Qi Universal Charger receiver from ebay:
http://www.ebay.co.uk/itm/Qi-Univers...E:L:OU:US:3160

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connected it to my N900 - it does not charge with bme, but after executing these it charges wirelessly just fine and the yellow charging light is on (through the micro usb connection and without doing any soldering/electronic mess):

stop bme
modprobe bq2415x_charger

A few issues i've noticed:
1. the charging works great - even through the back cover - no need to place the coil outside (the coil itself is very thin), but the part that is connected to the coil cannot be inside the cover since its a little too thick for it to close properly.

2. i am thinking about attaching the small little thick part which is connected to the coil right under the camera, make 1 or 2 little holes for the coil's wires which will reside inside the cover, and another small hole for the microusb wire to go under the cover and into the micro usb socket of the n900.

3. while charging, the N900's screen sometimes gets awakened and after its time limit goes off again - strange behavior i sure want to solve.