First ride of the season

Had my first little wobble out today. I charged my battery up last week, and just went round the block, and stuck it back in the garage. But, today I thought I'd go for a proper ride. I took it out of the garage and thumbed the starter.....click and nothing
The battery had gone flat again, so I'm assuming it's goosed. Anyway, charged it back up and stuck it back on. It was brill to get back out on the road. Only did about 10 miles, as I wanted to get home in time for BSB on telly.
I will give it another try in the morning, if it starts I will have a longer ride then, only other downside is the ecu light is on, but I'm hoping that's just cos I removed the battery, it's done that before.
I will find out tomorrow.