I've got a fairly simple 5.2m fibreglass runabout fitted with a 2002 Mercury 115HP Salt Water series outboard (four cylinder, quad carby, oil injection, 2 stroke) outboard motor. Aside from the motor, there's very little in the way of electronics on it - an old fish finder and a radio for emergencies. Starting the motor would be the main electronic activity. Any advise on what size battery would be suitable for the setup? Something around 450 CCA?
