When you go away for a few days it is good advice to switch off all the unnecessary electrics. What you cannot predict however is that time when the electricity supplier will switch it off for you. On returning home recently we found all our cordless phones (BT 8500) flashing away and it took about 2 or 3 days for some of them to charge up again.
The usual search on Google showed that the rechargeable phone batteries were probably past their best, never ever having been replaced, and seemingly not having a very long life. More search revealed “BuyaBattery.co.uk” who delivered within 24 hours a set of new batteries for all our phones. The new batteries are inserted and everything appears to be working.