I am updating my review 2.5 years later.
I had written:
The phones were installed in a company. They transfer calls from one to another, even though the store did not know about it and had informed us that it is not possible. Going back to the company's menu, we found that call transfer is executed correctly, although it requires 4 steps which is not considered user-friendly. However, it is possible for those who are interested.
Very nice (subjective) but very good value for money.
The menu is slow, but who refers to the menu of landlines anymore?
Today, after 2.5 years
As for the rechargeable batteries, they are like the first day, I don't know, but it applies to all 3 phones! With daily use, of course, and attention to charging. We don't forget the device on the base, do we? That goes without saying. Other than that, the above still applies.