A:AnswerYes, the extra handset is model # DL70110. Just make sure it’s the right color. Also, not sure the total number of handsets this model # DL72310 accepts. It’s 5 or 6? Just make sure you find out and don’t exceed that.
A:AnswerI keep my hand sets in the cradle all day and keeps the sets charged. So i have not had any problem with the battery. I for got one time to plug in the set for several days and the set was still working