I'm not sure what it means, but thought I would just run some of my crazy theories by you if you're interested.
According to the G64VW English User Manual E7386 on page 22, it mentions you should charge the notebook for '6 hours before using it in battery mode for the first time', so wondering if this could be why you saw the shutdown problem during the first charge although you were charging the notebook instead of using battery power, so it isn't exactly the same thing.
It's not something I've seen or heard of myself though.
Also, the user manual on page 14 mentions the battery light will blink orange when less than 10% and be solid orange when the battery power is less than 95% (and more than 9%?), so wondering if you were just transitioning from the solid orange battery light to the blinking orange battery light and the appearing green is just a side affect.
It may not really be worth worrying about too much, but you may want to keep an eye on the battery light when your battery is around 10% charge again to see if that blinking pattern always happens although I'm wondering if the notebook needs to be off and at a certain battery charge where it is just about to go from 10% to 9%.
Well, hopefully someone else has better ideas if this doesn't make sense.