Bluetooth headset can not be charged into the electricity, a charging red light immediately green, this is why, there are a few months of no use, take out like this?

What brand of Bluetooth do you use? You can charge for about two hours and then use the Bluetooth to see if it can be operated, if it can not be used, it is the Bluetooth circuit board is broken; If you can continue to listen to the song to run out of electricity to see how long you can listen to generally 3-6 hours is normal. After using it, charge it again to see the change of the indicator light. If it is still the same as the above, the related control program of the indicator light is damaged

Battery overdischarge.