I sent mine back for an upgrade and they messed up the charging circuit didn't work at all when I got it back but The nice lady said no problem she sent a shipping label and had UPS pick it up and now it works fine although I only turn it on long enough to charge the batteries and turn it off.
I also have a little EverReady quick charger that I can charge spares in without using the handset charger.
As Mike explained it to me over the phone the hand set has a thermal sensor in it.When the heat builds up from charging the sensor senses the heat level and turns off the charging circuit to let the batteries cool so you don't cook your batteries or your hand held LOL
There are alot of these sensors that are bad from the factory so you need to send it back . You can still use it till you send it back just put regular double A batteries in it and turn off the charging circuit(Switch is on the bottom of the base)
You have to send it back tell em about the other problems and they'll make sure the upgrade was done right.
David
