So after killing my old but very faithfull gamebird headset i bought a Logitech Cordless Vantage and in the ridiculous big manual it states that you should charge it fully for the 1st time so i put it on charge using my phone charger because the charger i got with it is one the americans would have more use for then me =/ but anyway its now been on charge for 2 hours and the orange light is still solid is this norm? or should it be charged by now?