I have been charging my new Brydge for longer than 3 hours and red light has never gone out . I did get the keyboard paired.

SOURCE: LG Chocolate

dont listen to the other guy you would not get three batteries wet unless your dumb... it is probably a cracked circuit board in your phone

SOURCE: headset not charging

Sometimes it takes longer than two hours. Leave it plugged in overnight if you can. The indicator light should go off after fully charging.

SOURCE: Sony wega 70 in new bulb lasted 8 hours now

hello.+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.

SOURCE: I went to charge my motokr s305 headphones and the

I called Moto Tech Support. They are sending me a replacement. They did not seem to have any troubleshooting ideas for the blinking red light.

SOURCE: chair no longer charges, no flashing or blinking, lights,

The number of lights that are blinking indicate what the problem is. Visit this site to locate the type on controller on your power chair and you will be able to see that the blinking lights mean:
http://www.pgdt.com/scenter/diagnostics/diagvsi.html
Try to reset your manual brake release as this is a common problem.
If you continue to have a problem, contact your manufacturer or dealer for service. If your insurance purchased they power chair for you, they may also cover the cost of repairs.
Good luck!