My Jabra easyvoice wont charge up no lights on device

The unit needs a full charge. Be certain the BT firmware and software with drivers are current. If necessary, contact the manufacturer support technician for additional assistance.

This problem is mostly associated with the battery of your device. In some cases, the battery is most likely to have expended it's lifespan.
In this case, all you need to do is to change the battery. It is advised that you get a professional to change the battery for you as trying to do this yourself could lead to a damage in the device.

To see if the problem is with your bluetooth connection, try sending and recieving files with your bluetooth. If it is successful, then try borrowing 1 jabra device and test it with your phone. The bluetooth connection and the jabra device are the problems I can see since you said it worked once.
Hope this helps! -jayps

The headset light turns off when it is at full charge. If it is not charged yet it will be illuminated red.
Found this in the online manual:
http://img5.jabra.com/sites/Jabra/GNimages/Products/Stone_Manual_EN_NA_8404.pdf

I opened mine into the on position and the charge light went from blinking to solid red.

Hello

Your bluetooth headset is powered by an internal battery. If the battery is not charged,it just won't turn on. Fully charge your battery before use.

Make sure that the power outlet you're using is working and that the cord is fitted correctly into the wall, PC or Car outlet and the Jabra Bluetooth device.

Try unplugging the Jabra Bluetooth device and see if it turns on. If so, use the Jabra Bluetooth device until the battery is completely exhausted. The next time you charge it, check that it is charging properly

If the Jabra Bluetooth device is still not charging, check what happens when you initially plug the Bluetooth device into its charger. If the light on the Bluetooth device flashes on and then off again quickly, it is likely that the battery is no longer working. Batteries cannot be replaced or covered warranty

You have to first put the Headset into discoverable mode. According to the Jabra website, this is done by pressing and holding the end/mute button until the light comes on steady. Follow the procedure for your phone to pair a bluetooth device to it. The PIN code will be 0000.

Hello friend,
First, make sure that your headset is charged and then press and hold the "Answer/end" button until that the light becomes blue solid. at this time you can do a search on your phone to discover bluetooth devices.
Here is the link to download the user manual for more information:
http://www.jabra.com/sites/Jabra/GNimages/Products/WirelessHeadset/BT350/Documents/BT350_UM_NA_EN_491.pdf
if the device doesn't light on at all, you may need to try with another charger because in this the device is not charged at all.
Best Regards,

I don't know how long you have had the headset but it sounds like it isn't holding a charge.  Contact Jabra to find out what the warranty is on the headset.

http://www.jabra.com/sites/Jabra/GNimages/Products/WirelessHeadset/BT160/Documents/User%20manual/BT160_UM_NA_EN_479.pdf

This is the manual for your device.
Page 4 will answer your question