Concerning my Bluetooth headset how do ik when it's completely charged because when I plug it in a red light comes on and for a few minutes after the light comes of does it means it completely charged

have you replaced battery?
1. charger is not working
2. battery is bad.

The battery has probably failed. Unfortunately they are not usually replaceable.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/dave_fb2c45146b845cea

Hi, Ephraim. The flashing red light indicates that the device is showing "low battery". It could be that the LG phone charger fits the charging port on your bluetooth headset but it is not compatible with your device. In order for you to know that it is charging, the device should show a steady red light(means charging).
Please take a look at the table reference below.
----------------------------------------------------------------------
•With the Charger Plugged In
______________________________________________________________________
•Headset Indicator Headset Status
Red-----------------------------------------------Charging (battery level less than 50% charge)
Yellow-------------------------------------------Charging (battery level more than 50% charge)
Green--------------------------------------------Charging complete
----------------------------------------------------------------------
======================================================================
======================================================================
======================================================================
----------------------------------------------------------------------
With No Charger Plugged In
__________________________
Headset Indicator Headset Status
______________________________________________________________________
Off ---------------------------------------------Power off
Three blue flashes------------------------Powering on/off
Steady blue --------------------------------Pairing/connect mode
Rapid blue/purple flashes -------------Connection successful
Quick blue flash --------------------------Incoming/outgoing call
Slow blue pulse --------------------------Connected (on a call)
Slow blue flash ---------------------------Standby (not on a call)
Slow red flash ----------------------------Idle (not connected to phone)
Slow purple pulse -----------------------Connected call muted
Steady red ---------------------------------Attempting to connect
Quick red flash ----------------------------Low battery

Note: After 20 minutes on a call or of inactivity, the light stops flashing to conserve power, but the headset remains on
----------------------------------------------------------------------

Hope that'll help you in some way.
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It is charged when the red light goes out. Press and hold the VOLUME DOWN button for one second and an audible will give you the battery charge level - high - medium - low.

Here's the instructions for charging.
Plug the Motorola charger into the end of
the headset.
The indicator light turns red when the battery is charging. It may take up to 1 minute for the indicator light to turn on. When the headset's battery is fully charged (about 2hours), the indicator light turns green.

From your information, it may very well be that the battery should be replaced if the red light doesn't go off as it should.

Here's a link to the full instructions. I hope this helps.
(Click here)
http://www.motorola.com/Hellomoto/Master%20Lists/Product%20Manuals/Static%20Files/US-EN/H710%20QSG%20EN%20Generic.pdf

when i charge my bluetooth, the light is red for a few minutes but it goes out and its not charging anymore. Please help

....My madcatz bluetooth will not charge everytime i plug it in the ps3 the red light comes on then it goes off and it keeps on doing it and its a brand new bluetooth...i hold it for a long time and it still wont work..HELP PLEASE!!!!!!1

USING THE HEADSET
US USING THE HEADSET
1. Headset
2. Control Button
3. Light Indicator
4. Microphone
5. Earloop
6. Speaker
7. Charging Jack
A. Charging
Charge for at least 20 minutes before
first use. Complete charging in 2 hours.
Headset will not function when charging.
B. On/Off, Volume↑↓
Press the Control Button for 2 seconds
to power on. Press the Control Button
for 3 seconds to power off.
C. Pairing
Begin with Headset turned off.
Press button for 6 seconds. Release
button when Light Indicator flashes
blue/red. Headset is ready to pair with
Bluetooth device.
D. Pairing
Use your device’s menu to begin
pairing mode and select “320
Plantronics” on the display. When
asked for passkey, enter “0000.”

The indicator light turns red when the battery is
charging. It may take up to 1 minute for the
indicator light to turn on. When the headset's
battery is fully charged (about 2 hours), the
indicator light turns off.