I've been able to get a Promaster Go charger to work, but only with an extra step.

Namely I had to reboot the device, and then plug in the charger when the phone was booting but before it was fully up. Pluging it in when the device is on results in no effect and plugging it in while the phone is off gives the few pulses of orange, nokia logo on un-backlit screen, vibrate, pause, repeat.

I'm gonna try looking into the data-pin issue once I can find a battery for my multimeter..