Hi. I have a Motorola V3xx Razr phone. It has a USB Mini-B jack for chargin g.
I tried charging it with a BlackBerry wall wart. I can't make out the model number of the wall wart due to the small size of the type. I can come up w ith that later. When I plugged the BlackBerry wall wart into the phone, the phone came on, but the battery did not charge.
I tried another wall wart. It's a Verizon wireless model PW-1BGT charger, w hich can source 800 mA at 5.0 V. When I plugged it into the phone, the phon e's "charging battery" screen lit up. It did charge the phone's battery pac k. When I disconnected it, the phone turned itself off.
The pinout chart at Wikipedia makes me think that there is difference in th e way pin 4 is wired, rather than an inability of the BlackBerry charger to source sufficient current.
Am I right?
Thanks.