Thanks for confirming.
It took me a while (mostly at Jeff's insistance) to test the batteries, which, turned out (surprisingly) to be fine, even though the phone said they needed charging, right after the phone said they were fine.
Go figure. SO far, it has worked out ok, so, I think the re-registration process was what fixed it (I think).
My experiments pretty much proved that the following would happen: a) Leave batteries in overnight - handset display says they're full. b) Pull batteries out momentarily & put them back in c) Now handset display says (the same batteries) need 7 hours of charging
So, I'm going with the recommendation to ignore whatever the handset display says if you've just put in batteries.
Hmmm, Panasonic implemented mandatory >7 hour initial charge to ensure long battery life. On any rechargeable batteries proper initial charge is very important. It is not whether battery is charged or not. It is just so. You are obliged to make sure at least 7 hour charging time. Usually owners manual does not explain things in full. Panasonic CL phones in my house is almost 10 years old. None yet needs new battery.
I'm having this same problem, and re-registering the handset works for abou t two days before the problem recurs. After reading a number of complaints on the web from other owners of these phones, I've ordered new Sanyo NiMH batteries to replace the OEMs. I'll report back later.
Any debugging hints?
Yes. Change the batteries.
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