The blinking led, is an indication that your charger is not providing enough current (must be 1A minimum). Many owners have found that Samsung phone chargers, Apple chargers, and Anker chargers work well. I use Samsung chargers, and experience no problems. The white light is generated by using three leds (red + green + blue) and in theory should produce white light. But manufacturing tolerances mean that some people like myself, see white light with a tinge of purple. Nothing to worry about, because the key point is that the light will go out when fully charged. I tend to charge at night, so if the light is out when i wake up in the morning, then I am happy. I think that you will be ok in the long run, but you are just going through the phase of identifying which is the best charger to use, and for how long to charge your mojo.