Dead battery?

[darrsi]

I use the bike infrequently and last run was Tuesday. Should I leave the bike on a slow charger when not in use to preserve the battery?

It would obviously help.
I had a couple of months off work last year with a fractured hip and my battery survived fine without a charge or being started.
If the battery is in good nick it will hold a charge well, but they are designed to be charged frequently through riding the bike.