Vtech 5867 won't charge

SOURCE: vtech 5867 interferes with wi-fi 802.11g

First off all You should try disconnecting the phone for a few hours and then checking your internet connection. if the problem reoocures while the phone is unplugged then the phone is not at fault. If it doesn't - reconnect the phone verify that it's not plugged to the same power outlet as the router and place the Vtech base in a diffrent part of the room. good Luck

SOURCE: Not Registered

I had the same problem and this procedure fixes it! First, unplug the power to the main base (answering machine) for 20 seconds. Plus it back in. Put the phone that says "not registered" in the main answering machine. It will say "press the find handset for 4 seconds". Do that. It will run thru a series of stuff and will find the handset. It works! Rich (jambones.com)

SOURCE: Vtech 8L55 2 unit portable phone

I just had the same problem. Could be dirty terminals. I took the battery out, cleaned the terminals on the battery and phone with a pencil eraser, put the battery back in and it's working fine. (Says fully charged, where just a few minutes ago it said low battery).

SOURCE: Vtech phones loosing connection to base

You are pretty close to the solution. The problem is the charge detection in the handset. All handsets on a cordless phone detect the battery level with an hexadecimal value in the memory. Each hex value equal a volt value of the battery. EX: 3.5v = 9B
3.6v = 9C 3.7v =9D etc... The problem is the hex value in your defective handset are all mess up. So 9B is not 3.5v anymore. Then your handset could last 1hr after foul charge or doesn't alert you before the phone goes dead due to low BAtt.

SOURCE: vtech i5858

I had the same issue and by changing the battery my problem was definitively solved. I bought the battery on ebay for about 5$.

this is not mentionned on the vtech faq but it should

I hope this helps