Phone with many good features, but with a weak battery

The phone has almost everything I expect from a phone.
I wanted
- Speakerphone
- Answering Machine
- Calls with the base
- Paging (handset to ring when I press the button)
- Calls between base and handset
- Connect to a router and the Fritz box
- Long calls possible

All these features this phone has. The only downside is that the battery of the handset not even a day without charging outlasted also no sound is when the battery is low.