Simple question from a new ring 2 owner

I just got a Ring 2 as a gift and am planning to install it this weekend. I just have a few questions that i was hoping to get some help with. I don't really know much abotu doorbell waiting so these may be dumb questions.1) if i hook up my ring 2 to the existing doorbell wiring, will it keep the battery charged, or will i still need to take it out and charge it every so often.2) If i use the existing doorbell wiring, will it ring my existing (old fashioned) doorbell chime when someone rings the doorbell using the ring 2?3) if the answer to the first two questions is no, then what's the advantage to connecting the existing wiring?4) I will need to install the ring2 on vinyl siding because the door casing on my front door is too narrow. Can I just use the wedge kit that came with the doorbell or is there is different/better mounting plate i can use?