Motorcycle and Scooter appreciation

Right. So I've found the battery and attachéd the leads to the car. After a while the display came up, but then as soon as I try and start it, all the juice gets used up.

If I leave it charging (around 1min) and then try and jump start it the battery seems to already be flat.

Is it possible to do a running jump with no juice?

If running jump started it before, but that's been after weeks of use rather than over a year of no use.

Any thoughts ?

I think either find a better way of charging it, with a conditioning battery charger, or buy a new battery. They never really hold a charge too well after being discharged fully, especially if they've sat outside in the cold.