Hello
Hi is it still available?
Yes it is. I am selling it for 50 dollars. 
how old is the battery?
It is pretty new. I have only had it for a month and I bought it new. 
why are selling it ?
I have another one,and I do not need two. Wanna come by and take a look at it?
I will give you $45 cash, deal?
That sounds good. What time will you be by?
whenever works for you